CN115795846A - Optical frequency comb simulation method, device, equipment and storage medium - Google Patents
Optical frequency comb simulation method, device, equipment and storage medium Download PDFInfo
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Abstract
The specification discloses a simulation method, a simulation device, simulation equipment and a storage medium for an optical frequency comb, which can construct corresponding virtual devices in a simulation environment according to initial parameters of devices input by a user, perform simulation through the virtual devices to obtain optical frequency comb spectrum graphs generated by the virtual devices, further determine parameter value domains corresponding to the initial parameters according to image information of the optical frequency comb spectrum graphs, and configure experimental devices for generating the optical frequency comb according to the determined parameter value domains of the initial parameters to reduce the possibility of damage of the experimental devices for generating the optical frequency comb, thereby reducing the research and experiment cost of the optical frequency comb.
Description
Technical Field
The present disclosure relates to the field of optical fiber communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for simulating an optical frequency comb.
Background
At present, as an ultrashort optical pulse generated by a mode-locked laser, an optical frequency comb has the same time interval between adjacent optical pulse waves, and therefore, in view of the spectral line specificity, the optical frequency comb can be applied to the fields of measuring distance (which can be accurate to nanometer), measuring color and frequency of light, and applying to an optical atomic clock (which has ultrahigh time precision).
However, since the complexity of the optical link required for generating the optical-frequency comb is extremely high, a great deal of analysis and experiments are required to be performed on the research on the optical-frequency comb, and the current research on the optical-frequency comb is limited by the fact that the cost of relevant devices in an actual optical link is high, and problems such as damage caused by overload of relevant devices in the optical link may occur in the experiment process.
Therefore, how to reduce the cost of the optical frequency comb research experiment is an urgent problem to be solved.
Disclosure of Invention
The present specification provides a simulation method, apparatus, device and storage medium for an optical frequency comb, which partially solve the above problems in the prior art.
The technical scheme adopted by the specification is as follows:
the present specification provides a simulation method of an optical frequency comb, the optical frequency comb being composed of devices, the devices including: laser, polarization controller PC, modulator, phase modulator PM, signal generator, electrical amplifier, spectrometer, the method comprising:
acquiring initial parameters of each device, and constructing virtual devices corresponding to the devices in the optical frequency comb in a simulation environment according to the initial parameters;
generating an initial optical signal by a virtual laser in a simulation environment, sending the initial optical signal to a virtual polarization controller, so that the virtual polarization controller changes the polarization state of the initial optical signal, sending the changed initial optical signal to a virtual modulator, so that the virtual modulator modulates the initial optical signal according to a first electrical signal input to the virtual modulator, and controls the amplitude of the initial optical signal to obtain a modulated optical signal, sending the modulated optical signal to a virtual phase modulator, so that the virtual phase modulator changes the phase of the modulated optical signal according to a second electrical signal input to obtain a target optical signal, wherein the first electrical signal and the second electrical signal are obtained by sending the initial electrical signal generated by a virtual signal generator to a virtual electrical amplifier to be amplified by the virtual electrical amplifier;
sending the target optical signal to a virtual spectrometer, so as to demodulate the target optical signal through the virtual spectrometer, and determining an optical frequency comb spectrum chart of the target optical signal;
and determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum line graph, wherein the parameter value domain is used for actually constructing the optical frequency comb.
Optionally, the virtual electrical amplifier comprises: a first virtual electrical amplifier, a second virtual electrical amplifier, the optical-frequency comb further comprising: a phase shifter PS;
the first electric signal is obtained by sending an initial electric signal generated by the virtual signal generator to the first virtual electric amplifier and amplifying the initial electric signal by the first virtual electric amplifier;
the second electrical signal is obtained by sending the initial electrical signal generated by the virtual signal generator to a virtual phase shifter corresponding to the phase shifter constructed in a simulation environment, adjusting the phase of the initial electrical signal by the virtual phase shifter to obtain an adjusted initial electrical signal, and amplifying the initial electrical signal by the second virtual electrical amplifier.
Optionally, determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum line graph specifically includes:
and determining a target parameter value domain of the initial parameter corresponding to the phase shifter according to the optical frequency comb spectrum diagram.
Optionally, determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum line graph specifically includes:
determining parameter value domains corresponding to the initial parameters according to the image information of the optical frequency comb spectrum line graph, wherein the image information comprises: at least one of a signal-to-noise ratio of the optical-frequency comb, a flatness of the optical-frequency comb, and a number of comb teeth of the optical-frequency comb.
Optionally, determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum line graph specifically includes:
and determining the parameter value domain of the output optical power parameter of the laser in each initial parameter according to the signal-to-noise ratio of the optical frequency comb in the optical frequency comb spectrum diagram.
Optionally, determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum line graph specifically includes:
determining a conversion efficiency value of the modulator for converting the variation of the electric signal into the variation of the optical signal according to the flatness of the optical frequency comb in the optical frequency comb spectrum line diagram;
and determining a parameter value field of the bias voltage of the modulator in each initial parameter according to the conversion efficiency value.
Optionally, determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum line graph specifically includes:
and determining a parameter value field of the relevant parameter of the phase modulator in each initial parameter according to the number of comb teeth of the optical frequency comb in the optical frequency comb spectrum diagram.
The present specification provides an emulation apparatus of an optical frequency comb, comprising:
the acquisition module is used for acquiring initial parameters of each device and constructing virtual devices corresponding to the devices in the optical frequency comb in a simulation environment according to the initial parameters;
a simulation module, configured to generate an initial optical signal by a virtual laser in a simulation environment, send the initial optical signal to a virtual polarization controller, so that the virtual polarization controller changes a polarization state of the initial optical signal, send the changed initial optical signal to a virtual modulator, so that the virtual modulator modulates the initial optical signal according to a first electrical signal input to the virtual modulator, and controls an amplitude of the initial optical signal to obtain a modulated optical signal, send the modulated optical signal to a virtual phase modulator, so that the virtual phase modulator changes a phase of the modulated optical signal according to a second electrical signal input to the virtual phase modulator, so as to obtain a target optical signal, where the first electrical signal and the second electrical signal are obtained by sending the initial electrical signal generated by a virtual signal generator to a virtual electrical amplifier, and amplifying the initial electrical signal by the virtual electrical amplifier;
the demodulation module is used for sending the target optical signal to a virtual spectrometer so as to demodulate the target optical signal through the virtual spectrometer and determine an optical frequency comb spectrum diagram of the target optical signal;
and the determining module is used for determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum diagram, wherein the parameter value domain is used for actually constructing the optical frequency comb.
Optionally, the virtual electrical amplifier comprises: a first virtual electrical amplifier, a second virtual electrical amplifier, the optical-frequency comb further comprising: a phase shifter PS; the first electric signal is obtained by sending an initial electric signal generated by the virtual signal generator to the first virtual electric amplifier and amplifying the initial electric signal by the first virtual electric amplifier; the second electrical signal is obtained by sending the initial electrical signal generated by the virtual signal generator to a virtual phase shifter corresponding to the phase shifter constructed in the simulation environment, adjusting the phase of the initial electrical signal by the virtual phase shifter to obtain an adjusted initial electrical signal, and amplifying the initial electrical signal by the second virtual electrical amplifier.
Optionally, the determining module is specifically configured to determine, according to the optical frequency comb spectrum line diagram, a target parameter value field of the initial parameter corresponding to the phase shifter.
Optionally, the determining module is specifically configured to determine, according to image information of the optical frequency comb spectrum line graph, a parameter value domain corresponding to each initial parameter, where the image information includes: at least one of a signal-to-noise ratio of the optical-frequency comb, a flatness of the optical-frequency comb, and a number of comb teeth of the optical-frequency comb.
Optionally, the determining module is specifically configured to determine a parameter value field of the output optical power parameter of the laser in each initial parameter according to a signal-to-noise ratio of the optical frequency comb in the optical frequency comb spectrum diagram.
Optionally, the determining module is specifically configured to determine, according to a flatness of the optical-frequency comb in the optical-frequency comb spectrum diagram, a conversion efficiency value at which the modulator converts a variation of the electrical signal into a variation of the optical signal; and determining a parameter value field of the bias voltage of the modulator in each initial parameter according to the conversion efficiency value.
The present specification provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the above-described method of simulating an optical-frequency comb.
The present specification provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for simulating an optical-frequency comb described above when executing the program.
The technical scheme adopted by the specification can achieve the following beneficial effects:
the simulation method of the optical frequency comb includes the steps of firstly, obtaining initial parameters of each device, constructing each virtual device corresponding to each device included in the optical frequency comb in a simulation environment according to the initial parameters, generating an initial optical signal through a virtual laser in the simulation environment, sending the initial optical signal to a virtual polarization controller to enable the virtual polarization controller to change the polarization state of the initial optical signal, sending the changed initial optical signal to a virtual modulator to enable the virtual modulator to modulate the initial optical signal according to a first electric signal input to the virtual modulator, controlling the amplitude of the initial optical signal to obtain a modulated optical signal, sending the modulated optical signal to a virtual phase modulator to enable the virtual phase modulator to change the phase of the modulated optical signal according to a second electric signal input to obtain a target optical signal, wherein the first electric signal and the second electric signal are obtained by sending the initial electric signal generated by a virtual signal generator to the virtual electric amplifier to obtain a spectral domain amplified by the virtual electric amplifier, sending the modulated optical signal to a target optical spectrum, and determining the parameter value of the optical frequency comb according to the target optical frequency spectrum, and determining the optical frequency spectrum domain corresponding to the target optical frequency comb parameter, and determining the optical frequency spectrum of the optical frequency comb.
According to the method, the corresponding virtual devices can be constructed in the simulation environment according to the initial parameters of the devices input by a user, the virtual devices are used for simulation to obtain the optical frequency comb spectrum diagram of the optical frequency comb generated by the virtual devices, the parameter value domain corresponding to each initial parameter can be further determined according to the image information of the optical frequency comb spectrum diagram, the experimental devices for generating the optical frequency comb can be configured according to the determined parameter value domain of each initial parameter, the possibility of damage of the experimental devices for generating the optical frequency comb can be reduced, and the research experiment cost of the optical frequency comb can be reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the specification and are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description serve to explain the specification and not to limit the specification in a non-limiting sense. In the drawings:
fig. 1 is a schematic flow chart of a simulation method of an optical frequency comb provided in this specification;
fig. 2 is a schematic diagram of a connection relationship between virtual devices provided in this specification;
FIG. 3A is a schematic diagram of an optical frequency comb spectrum plot as provided herein;
FIG. 3B is a schematic diagram of another optical frequency combing profile provided herein;
fig. 4 is a schematic diagram of an emulation apparatus for an optical-frequency comb provided in the present specification;
fig. 5 is a schematic diagram of an electronic device corresponding to fig. 1 provided in this specification.
Detailed Description
In order to make the objects, technical solutions and advantages of the present disclosure more clear, the technical solutions of the present disclosure will be clearly and completely described below with reference to the specific embodiments of the present disclosure and the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present specification without making any creative effort belong to the protection scope of the present specification.
The technical solutions provided by the embodiments of the present description are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a simulation method of an optical frequency comb provided in this specification, including the following steps:
s101: and acquiring initial parameters of each device, and constructing each virtual device corresponding to each device contained in the optical frequency comb in a simulation environment according to the initial parameters.
In this specification, the service platform may obtain initial parameters of each device of the optical frequency comb input by a user, and in a simulation environment, construct virtual devices corresponding to each device included in the optical frequency comb according to the obtained initial parameters, and further determine a parameter value domain corresponding to each initial parameter according to image information in an optical frequency comb spectrum diagram of the simulation optical frequency comb formed by the virtual devices.
The optical frequency comb is composed of devices, and the devices comprise: a laser, a Polarization Controller (PC), a Modulator (such as a Mach-Zehnder Modulator (MZM)), a Phase Modulator (PM), a signal generator, a first electrical amplifier (such as a microwave amplifier), a second electrical amplifier (such as a microwave amplifier), a spectrometer, a Phase Shifter (PS), and the like.
The initial parameters include: the output optical power of the laser, relevant parameters of the polarization controller, the driving voltage and the bias voltage of the modulator, relevant parameters of the phase modulator, relevant parameters of the signal generator, relevant parameters of the electric amplifier, relevant parameters of the spectrometer, the phase angle of the phase shifter and the like.
In this specification, an execution subject for implementing the simulation method of the optical frequency comb may refer to a designated device such as a server installed on a service platform, or may refer to a designated device such as a desktop computer or a notebook computer.
S102: in a simulation environment, generating an initial optical signal through a virtual laser, sending the initial optical signal to a virtual polarization controller, so that the virtual polarization controller changes the polarization state of the initial optical signal, sending the changed initial optical signal to a virtual modulator, so that the virtual modulator modulates the initial optical signal according to a first electrical signal input to the virtual modulator, and controls the amplitude of the initial optical signal to obtain a modulated optical signal, sending the modulated optical signal to a virtual phase modulator, so that the virtual phase modulator changes the phase of the modulated optical signal according to a second electrical signal input to the virtual phase modulator, and obtaining a target optical signal, wherein the first electrical signal and the second electrical signal are obtained by sending the initial electrical signal generated by a virtual signal generator to a virtual electrical amplifier, and obtaining the target optical signal after being amplified by the virtual electrical amplifier.
Further, after the server obtains the initial parameters, each virtual device may be constructed in the simulation environment, and each virtual device is connected to perform simulation, as specifically shown in fig. 2.
Fig. 2 is a schematic diagram of a connection relationship between virtual devices provided in this specification.
As can be seen from fig. 2, in the simulation environment, the server may generate an initial optical signal through the virtual laser, send the initial optical signal to the virtual polarization controller PC, so that the virtual polarization controller PC changes the polarization state of the initial optical signal, send the changed initial optical signal to the virtual modulator, so that the virtual modulator modulates the sideband of the initial optical signal according to the first electrical signal input to the virtual modulator, and control the amplitude of the initial optical signal to obtain a modulated optical signal, send the modulated optical signal to the virtual phase modulator, so that the virtual phase modulator changes the phase of the modulated optical signal according to the second electrical signal input to obtain a target optical signal, and further send the obtained target optical signal to the virtual spectrometer, where the first electrical signal and the second electrical signal are obtained by sending the initial electrical signal generated by the virtual signal generator to the virtual electrical amplifier, and the initial electrical signal may be a Radio Frequency (RF) signal amplified by the virtual electrical amplifier.
The simulation environment may be selected according to actual requirements, for example: VPI and other simulation software.
It should be noted that, since the electrical amplifier may have a phase delay or other problems when amplifying the initial electrical signal generated by the signal generator, in order to ensure that the phases of the first electrical signal input to the modulator and the second electrical signal input to the phase modulator are the same, the phase of the initial electrical signal may be adjusted in advance by the phase shifter to cancel the phase delay of the electrical amplifier in the process of amplifying the first electrical signal and the second electrical signal.
Specifically, the server may obtain the first electrical signal by sending the initial electrical signal generated by the virtual signal generator to the first virtual electrical amplifier and amplifying the initial electrical signal by the first virtual electrical amplifier. And the initial electrical signals generated by the virtual signal generator can be sent to the virtual phase shifter corresponding to the phase shifter constructed in the simulation environment, and adjusting the phase of the initial electric signal through the virtual phase shifter to obtain an adjusted initial electric signal, and amplifying the initial electric signal through the second virtual electric amplifier to obtain the initial electric signal.
Of course, the virtual phase shifter may perform phase adjustment on the first electrical signal and the second electrical signal after the first electrical signal and the second electrical signal are amplified by the virtual electrical amplifier, so that the phases of the first electrical signal and the second electrical signal are the same.
S103: and sending the target optical signal to a virtual spectrometer, so as to demodulate the target optical signal through the virtual spectrometer, and determining an optical frequency comb spectrum chart of the target optical signal.
S104: and determining parameter value domains corresponding to the initial parameters according to the optical frequency comb spectrum line graph, wherein the parameter value domains are used for actually constructing the optical frequency comb.
After the server sends the target optical signal generated by the virtual device to the virtual spectrometer, the target optical signal can be demodulated by the virtual spectrometer to obtain an optical frequency comb spectrum diagram of the target optical signal, parameter value domains corresponding to the initial parameters can be determined according to the obtained optical frequency comb spectrum diagram, and the parameter value domains corresponding to the initial parameters are displayed to a user according to the determined parameter value domains corresponding to the initial parameters, so that the user can use the optical frequency comb in the actual construction process.
The server may determine a parameter value domain corresponding to each initial parameter according to image information of the optical frequency comb spectrum line graph, where the image information includes: at least one of the signal-to-noise ratio of the optical-frequency comb, the flatness of the optical-frequency comb, and the number of teeth of the optical-frequency comb is specifically shown in fig. 3A and 3B.
Fig. 3A and 3B are schematic diagrams of optical frequency comb spectrum diagrams under two different image information provided in this specification.
As can be seen from fig. 3A and 3B, the optical-frequency comb spectrum diagram in fig. 3B has better flatness as a whole, and has more effective comb teeth and higher overall signal-to-noise ratio than the optical-frequency comb spectrum diagram in fig. 3A.
The flatness of the optical frequency comb spectrum line graph is a difference value between the maximum in-band frequency component power and the minimum in-band frequency component power, namely, a numerical difference between the highest spectral line and the lowest spectral line in the optical frequency comb spectrum line graph. The effective comb teeth are the comb teeth with energy exceeding a preset threshold value in the optical frequency comb spectrum line graph, namely the peaks corresponding to the spectral lines with higher height in the optical frequency comb spectrum line graph, and the signal-to-noise ratio of the optical frequency comb spectrum line graph is the height of the spectral lines of the optical frequency comb spectrum line graph.
Specifically, the server may determine a parameter value field of the output optical power parameter of the laser in each initial parameter according to the signal-to-noise ratio of the optical frequency comb in the optical frequency comb spectrum diagram. The conversion efficiency value of the virtual modulator for converting the variation of the electrical signal into the variation of the optical signal can be determined according to the flatness of the optical frequency comb in the optical frequency comb spectrum diagram, and the parameter value field of the bias voltage of the modulator in each initial parameter can be determined according to the conversion efficiency value. And determining a parameter value field of relevant parameters of the phase modulator in each initial parameter according to the comb tooth number of the optical frequency comb in the optical frequency comb spectrum diagram.
It should be noted that, since the image information such as the flatness and the number of comb teeth of the generated optical frequency comb spectrum diagram can be modulated by the virtual modulator and the virtual phase modulator, the modulator corresponding to the virtual modulator utilizes the electro-optic effect (that is, the change of the electrical signal is modulated into the change of the optical signal by using the electro-optic material whose refractive index changes with the magnitude of the electrical signal applied from the outside, where the refractive index of the electro-optic material can affect the phase change of the optical signal), and the electrical signal is obtained by amplifying the initial electrical signal subjected to phase shifting by the phase shifter by the electrical amplifier, when the parameter value domain corresponding to each output parameter is determined according to the image information of the optical frequency comb spectrum diagram, the parameter value domain corresponding to the phase angle of the virtual phase shifter can also be determined.
Besides, the server can determine the related parameters of the polarization controller, the driving voltage of the modulator, the related parameters of the phase modulator, the related parameters of the signal generator, the related parameters of the electric amplifier, the related parameters of the spectrometer and the like in each initial parameter according to the conditions of whether the optical frequency comb spectrum diagram can be formed or not, whether the device can be damaged or not and the like.
As can be seen from the above, the server may construct corresponding virtual devices in a simulation environment according to initial parameters of each device input by a user, and perform simulation through the virtual devices to obtain optical frequency comb spectrum diagrams of optical frequency combs generated by the virtual devices, and further may determine parameter value domains corresponding to the initial parameters according to image information of the optical frequency comb spectrum diagrams, and may configure the experimental devices for manufacturing the optical frequency combs according to the determined parameter value domains of the initial parameters, so as to reduce the possibility of damage to the experimental devices for generating the optical frequency combs, thereby reducing the research experiment cost of the optical frequency combs.
Based on the same idea, the present specification further provides a simulation apparatus of an optical-frequency comb, as shown in fig. 4.
Fig. 4 is a schematic diagram of an emulation apparatus for an optical-frequency comb provided in the present specification, including:
an obtaining module 401, configured to obtain initial parameters of each device, and construct, according to the initial parameters, each virtual device corresponding to each device included in the optical frequency comb in a simulation environment;
a simulation module 402, configured to generate an initial optical signal through a virtual laser in a simulation environment, send the initial optical signal to a virtual polarization controller, so that the virtual polarization controller changes a polarization state of the initial optical signal, send the changed initial optical signal to a virtual modulator, so that the virtual modulator modulates the initial optical signal according to a first electrical signal input to the virtual modulator, and controls an amplitude of the initial optical signal to obtain a modulated optical signal, send the modulated optical signal to a virtual phase modulator, so that the virtual phase modulator changes a phase of the modulated optical signal according to a second electrical signal input to the virtual phase modulator, so as to obtain a target optical signal, where the first electrical signal and the second electrical signal are obtained by sending the initial electrical signal generated by a virtual signal generator to a virtual electrical amplifier, and amplifying the initial electrical signal by the virtual electrical amplifier;
a demodulation module 403, configured to send the target optical signal to a virtual spectrometer, so as to demodulate the target optical signal by the virtual spectrometer, so as to determine an optical frequency comb spectrum diagram of the target optical signal;
a determining module 404, configured to determine, according to the optical-frequency comb spectrum line graph, a parameter value domain corresponding to each initial parameter, where the parameter value domain is used when the optical-frequency comb is actually constructed.
Optionally, the virtual electrical amplifier comprises: a first virtual electrical amplifier, a second virtual electrical amplifier, the optical-frequency comb further comprising: a phase shifter PS; the first electric signal is obtained by sending an initial electric signal generated by the virtual signal generator to the first virtual electric amplifier and amplifying the initial electric signal by the first virtual electric amplifier; the second electrical signal is obtained by sending the initial electrical signal generated by the virtual signal generator to a virtual phase shifter corresponding to the phase shifter constructed in a simulation environment, adjusting the phase of the initial electrical signal by the virtual phase shifter to obtain an adjusted initial electrical signal, and amplifying the initial electrical signal by the second virtual electrical amplifier.
Optionally, the determining module 404 is specifically configured to determine, according to the optical frequency comb spectrum diagram, a target parameter value field of the initial parameter corresponding to the phase shifter.
Optionally, the determining module 404 is specifically configured to determine, according to the image information of the optical frequency comb spectrum line graph, a parameter value domain corresponding to each initial parameter, where the image information includes: at least one of a signal-to-noise ratio of the optical-frequency comb, a flatness of the optical-frequency comb, and a number of comb teeth of the optical-frequency comb.
Optionally, the determining module 404 is specifically configured to determine a parameter value domain of the output optical power parameter of the laser in each initial parameter according to a signal-to-noise ratio of the optical frequency comb in the optical frequency comb spectrum diagram.
Optionally, the determining module 404 is specifically configured to determine, according to a flatness of the optical-frequency comb in the optical-frequency comb spectrum line graph, a conversion efficiency value of the modulator for converting the variation of the electrical signal into the variation of the optical signal; and determining a parameter value field of the bias voltage of the modulator in each initial parameter according to the conversion efficiency value.
Optionally, the determining module 404 is specifically configured to determine a parameter value field of a relevant parameter of the phase modulator in each initial parameter according to a comb number of an optical-frequency comb in the optical-frequency comb spectrum line diagram.
The present specification also provides a computer readable storage medium having stored thereon a computer program operable to perform a method as provided in figure 1 above.
The present specification also provides a schematic block diagram of an electronic device corresponding to fig. 1 shown in fig. 5. As shown in fig. 5, at the hardware level, the electronic device includes a processor, an internal bus, a network interface, a memory, and a non-volatile memory, and may also include hardware required for other services. The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs the computer program to implement the method described in fig. 1 above.
Of course, besides the software implementation, the present specification does not exclude other implementations, such as logic devices or a combination of software and hardware, and the like, that is, the execution subject of the following processing flow is not limited to each logic unit, and may be hardware or logic devices.
In the 90 s of the 20 th century, improvements in a technology could clearly distinguish between improvements in hardware (e.g., improvements in circuit structures such as diodes, transistors, switches, etc.) and improvements in software (improvements in process flow). However, as technology advances, many of today's process flow improvements have been seen as direct improvements in hardware circuit architecture. Designers almost always obtain the corresponding hardware circuit structure by programming an improved method flow into the hardware circuit. Thus, it cannot be said that an improvement in the process flow cannot be realized by hardware physical modules. For example, a Programmable Logic Device (PLD), such as a Field Programmable Gate Array (FPGA), is an integrated circuit whose Logic functions are determined by programming the Device by a user. A digital system is "integrated" on a PLD by the designer's own programming without requiring the chip manufacturer to design and fabricate application-specific integrated circuit chips. Furthermore, nowadays, instead of manually manufacturing an Integrated Circuit chip, such Programming is often implemented by "logic compiler" software, which is similar to a software compiler used in program development and writing, but the original code before compiling is also written by a specific Programming Language, which is called Hardware Description Language (HDL), and HDL is not only one but many, such as ABEL (Advanced Boolean Expression Language), AHDL (alternate Hardware Description Language), traffic, CUPL (core universal Programming Language), HDCal, jhddl (Java Hardware Description Language), lava, lola, HDL, PALASM, rhyd (Hardware Description Language), and vhigh-Language (Hardware Description Language), which is currently used in most popular applications. It will also be apparent to those skilled in the art that hardware circuitry that implements the logical method flows can be readily obtained by merely slightly programming the method flows into an integrated circuit using the hardware description languages described above.
The controller may be implemented in any suitable manner, for example, the controller may take the form of, for example, a microprocessor or processor and a computer readable medium that stores computer readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic controller, and embedded microcontrollers, examples of which include, but are not limited to, the following microcontrollers: ARC 625D, atmel AT91SAM, microchip PIC18F26K20, and Silicone Labs C8051F320, the memory controller may also be implemented as part of the control logic for the memory. Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may thus be regarded as a hardware component and the means for performing the various functions included therein may also be regarded as structures within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functions of the various elements may be implemented in the same one or more software and/or hardware implementations of the present description.
As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, the description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The description has been presented with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the description. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus comprising the element.
As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, the description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
This description may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present specification, and is not intended to limit the present specification. Various modifications and alterations to this description will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present specification should be included in the scope of the claims of the present specification.
Claims (15)
1. A method for simulating an optical frequency comb, wherein the optical frequency comb is composed of devices, and the devices comprise: laser, polarization controller PC, modulator, phase modulator PM, signal generator, electrical amplifier, spectrometer, the method comprising:
acquiring initial parameters of each device, and constructing virtual devices corresponding to the devices in the optical frequency comb in a simulation environment according to the initial parameters;
generating an initial optical signal by a virtual laser in a simulation environment, sending the initial optical signal to a virtual polarization controller, so that the virtual polarization controller changes the polarization state of the initial optical signal, sending the changed initial optical signal to a virtual modulator, so that the virtual modulator modulates the initial optical signal according to a first electrical signal input to the virtual modulator, and controls the amplitude of the initial optical signal to obtain a modulated optical signal, sending the modulated optical signal to a virtual phase modulator, so that the virtual phase modulator changes the phase of the modulated optical signal according to a second electrical signal input to obtain a target optical signal, wherein the first electrical signal and the second electrical signal are obtained by sending the initial electrical signal generated by a virtual signal generator to a virtual electrical amplifier to be amplified by the virtual electrical amplifier;
sending the target optical signal to a virtual spectrometer, so as to demodulate the target optical signal through the virtual spectrometer, and determining an optical frequency comb spectrum diagram of the target optical signal;
and determining parameter value domains corresponding to the initial parameters according to the optical frequency comb spectrum line graph, wherein the parameter value domains are used for actually constructing the optical frequency comb.
2. The method of claim 1, wherein the virtual electrical amplifier comprises: a first virtual electrical amplifier, a second virtual electrical amplifier, the optical-frequency comb further comprising: a phase shifter PS;
the first electric signal is obtained by sending an initial electric signal generated by the virtual signal generator to the first virtual electric amplifier and amplifying the initial electric signal by the first virtual electric amplifier;
the second electrical signal is obtained by sending the initial electrical signal generated by the virtual signal generator to a virtual phase shifter corresponding to the phase shifter constructed in a simulation environment, adjusting the phase of the initial electrical signal by the virtual phase shifter to obtain an adjusted initial electrical signal, and amplifying the initial electrical signal by the second virtual electrical amplifier.
3. The method according to claim 2, wherein determining the parameter value domain corresponding to each of the initial parameters according to the optical frequency comb spectrum diagram specifically comprises:
and determining a target parameter value domain of the initial parameter corresponding to the phase shifter according to the optical frequency comb spectrum diagram.
4. The method according to claim 1, wherein determining the parameter value domain corresponding to each of the initial parameters according to the optical frequency comb spectrum diagram specifically comprises:
determining parameter value domains corresponding to the initial parameters according to the image information of the optical frequency comb spectrum line graph, wherein the image information comprises: at least one of a signal-to-noise ratio of the optical-frequency comb, a flatness of the optical-frequency comb, and a number of comb teeth of the optical-frequency comb.
5. The method according to claim 4, wherein determining the parameter value domain corresponding to each of the initial parameters according to the optical frequency comb spectrum diagram specifically comprises:
and determining the parameter value domain of the output optical power parameter of the laser in each initial parameter according to the signal-to-noise ratio of the optical frequency comb in the optical frequency comb spectrum diagram.
6. The method according to claim 4, wherein determining the parameter value domain corresponding to each of the initial parameters according to the optical frequency comb spectrum diagram specifically comprises:
determining a conversion efficiency value of the modulator for converting the variation of the electric signal into the variation of the optical signal according to the flatness of the optical frequency comb in the optical frequency comb spectrum diagram;
and determining a parameter value field of the bias voltage of the modulator in each initial parameter according to the conversion efficiency value.
7. The method according to claim 4, wherein determining the parameter value domain corresponding to each of the initial parameters according to the optical frequency comb spectrum diagram specifically comprises:
and determining a parameter value field of the relevant parameter of the phase modulator in each initial parameter according to the number of comb teeth of the optical frequency comb in the optical frequency comb spectrum diagram.
8. An apparatus for simulating an optical frequency comb, comprising:
the acquisition module is used for acquiring initial parameters of each device and constructing virtual devices corresponding to the devices in the optical frequency comb in a simulation environment according to the initial parameters;
the simulation module is used for generating an initial optical signal through a virtual laser in a simulation environment, sending the initial optical signal to a virtual polarization controller so that the virtual polarization controller changes the polarization state of the initial optical signal, sending the changed initial optical signal to a virtual modulator so that the virtual modulator modulates the initial optical signal according to a first electric signal input to the virtual modulator and controls the amplitude of the initial optical signal to obtain a modulated optical signal, and sending the modulated optical signal to a virtual phase modulator so that the virtual phase modulator changes the phase of the modulated optical signal according to a second electric signal input to obtain a target optical signal, wherein the first electric signal and the second electric signal are obtained by sending the initial electric signal generated by a virtual signal generator to a virtual electric amplifier so as to be amplified by the virtual electric amplifier;
the demodulation module is used for sending the target optical signal to a virtual spectrometer so as to demodulate the target optical signal through the virtual spectrometer and determine an optical frequency comb spectrum diagram of the target optical signal;
and the determining module is used for determining a parameter value domain corresponding to each initial parameter according to the optical frequency comb spectrum diagram, wherein the parameter value domain is used for actually constructing the optical frequency comb.
9. The apparatus of claim 8, wherein the virtual electrical amplifier comprises: a first virtual electrical amplifier, a second virtual electrical amplifier, the optical-frequency comb further comprising: a phase shifter PS; the first electric signal is obtained by sending an initial electric signal generated by the virtual signal generator to the first virtual electric amplifier and amplifying the initial electric signal by the first virtual electric amplifier; the second electrical signal is obtained by sending the initial electrical signal generated by the virtual signal generator to a virtual phase shifter corresponding to the phase shifter constructed in the simulation environment, adjusting the phase of the initial electrical signal by the virtual phase shifter to obtain an adjusted initial electrical signal, and amplifying the initial electrical signal by the second virtual electrical amplifier.
10. The apparatus of claim 9, wherein the determining module is specifically configured to determine a target parameter value field of an initial parameter corresponding to the phase shifter according to the optical-frequency comb spectrum line diagram.
11. The apparatus according to claim 8, wherein the determining module is specifically configured to determine, according to image information of the optical-frequency comb spectrum line map, a parameter value domain corresponding to each of the initial parameters, where the image information includes: at least one of a signal-to-noise ratio of the optical-frequency comb, a flatness of the optical-frequency comb, and a number of comb teeth of the optical-frequency comb.
12. The apparatus as claimed in claim 8, wherein the determining module is specifically configured to determine the parameter value range of the output optical power parameter of the laser in the initial parameters according to the magnitude of the signal-to-noise ratio of the optical-frequency comb in the optical-frequency comb spectrum diagram.
13. The apparatus of claim 8, wherein the determining module is specifically configured to determine a conversion efficiency value for the modulator to convert the variation of the electrical signal into a variation of an optical signal according to a flatness of an optical-frequency comb in the optical-frequency comb profile; and determining a parameter value field of the bias voltage of the modulator in each initial parameter according to the conversion efficiency value.
14. A computer-readable storage medium, characterized in that the storage medium stores a computer program which, when executed by a processor, implements the method of any of the preceding claims 1 to 7.
15. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any of claims 1 to 7 when executing the program.
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| CN202211469559.XA CN115795846A (en) | 2022-11-22 | 2022-11-22 | Optical frequency comb simulation method, device, equipment and storage medium |
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