Correspondence relationship generation, control method, device and system for micro-ring modulator

Abstract

The present disclosure provides a method for generating a corresponding relationship for a micro-ring modulator, comprising: respectively determining the peak control parameter values ​​of the micro-ring modulator at multiple test temperatures, wherein the peak control parameter values ​​are the values ​​of the control parameters when the modulation efficiency of the micro-ring modulator reaches a peak value; and determining the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter values. The present disclosure also provides a control method for a micro-ring modulator, a control device for a micro-ring modulator, a control system for a micro-ring modulator, and a computer-readable medium.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the field of optical communication technology, and in particular to a method for generating a correspondence relationship for a micro-ring modulator, a method for controlling a micro-ring modulator, a control device for a micro-ring modulator, a control system for a micro-ring modulator, and a computer-readable medium. Background Art

[0002] Silicon-based optoelectronic devices have made great progress in recent years due to their compatibility with complementary metal oxide semiconductors (CMOS), small size, good thermo-optical effect and plasma dispersion effect. Among them, silicon-based modulators have been widely studied because they can be used in optical communication modules. Both silicon-based Mach-Zehnder modulators and silicon-based microring modulators have made great progress.

[0003] Compared with Mach-Zehnder modulators, micro-ring modulators have obvious advantages in power consumption and size. However, the existing methods for stabilizing the modulation efficiency of micro-ring modulators are inefficient. Summary of the invention

[0004] The embodiments of the present disclosure provide a method for generating a correspondence relationship for a micro-ring modulator, a method for controlling a micro-ring modulator, a control device for a micro-ring modulator, a control system for a micro-ring modulator, and a computer-readable medium.

[0005] In a first aspect, an embodiment of the present disclosure provides a method for generating a correspondence relationship for a micro-ring modulator, comprising:

[0006] Determine peak control parameter values ​​of the micro-ring modulator at multiple test temperatures respectively, wherein the peak control parameter values ​​are control parameter values ​​when the modulation efficiency of the micro-ring modulator reaches a peak value;

[0007] A corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value is determined.

[0008] In some embodiments, for any test temperature, the step of determining the peak control parameter value of the micro-ring modulator at the current test temperature comprises:

[0009] Determining whether the modulation efficiency of the micro-ring modulator reaches a peak value;

[0010] When the modulation efficiency of the micro-ring modulator has not reached a peak value, the control parameter of the micro-ring modulator is adjusted until the modulation efficiency of the micro-ring modulator reaches a peak value, and the value of the control parameter when the modulation efficiency of the micro-ring modulator reaches a peak value is used as the peak control parameter value.

[0011] In some embodiments, after the step of determining whether the modulation efficiency of the micro-ring modulator reaches a peak value, the corresponding relationship generation method further includes:

[0012] When the modulation efficiency of the micro-ring modulator reaches a peak value, the value of the current control parameter is used as the peak control parameter value.

[0013] In some embodiments, for any test temperature, the step of determining the peak control parameter value of the micro-ring modulator at the current test temperature further comprises:

[0014] The peak control parameter value is recorded.

[0015] In some embodiments, the step of determining whether the modulation efficiency of the micro-ring modulator reaches a peak value comprises:

[0016] determining whether the modulation efficiency of the micro-ring modulator reaches a peak value according to the received detection electrical signal;

[0017] Wherein, the detection electrical signal is generated according to the following steps:

[0018] Splitting the output optical signal modulated by the micro-ring modulator to obtain a detection optical signal;

[0019] The power of the output optical signal is detected by the detection optical signal to obtain a detection electrical signal.

[0020] In some embodiments, the step of determining the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value comprises:

[0021] When the modulation efficiency of the micro-ring modulator reaches a peak value, obtaining the actual ambient temperature of the micro-ring modulator;

[0022] The corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter is determined according to the actual ambient temperature.

[0023] In some embodiments, the control parameter includes a digital-to-analog conversion (DAC) value, and the peak control parameter value includes a DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value.

[0024] In some embodiments, the step of determining the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value comprises:

[0025] According to the temperature of the micro-ring modulator and the corresponding DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value, a curve showing the variation of the DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value with temperature is generated.

[0026] In a second aspect, an embodiment of the present disclosure provides a control method for a micro-ring modulator, comprising:

[0027] determining a current temperature of at least one micro-ring modulator;

[0028] According to the pre-stored correspondence between the temperature of each micro-ring modulator and the peak control parameter value, output the peak control parameter value of each micro-ring modulator corresponding to the current temperature of each micro-ring modulator, so as to control the modulation efficiency of each micro-ring modulator to reach the peak value;

[0029] The peak control parameter value is the value of the control parameter when the modulation efficiency of the micro-ring modulator reaches a peak value.

[0030] In some embodiments, the peak control parameter value includes a DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value.

[0031] In some embodiments, for each micro-ring modulator, the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value includes a curve showing the variation of the DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value with the temperature.

[0032] In a third aspect, an embodiment of the present disclosure provides a control device for a micro-ring modulator, comprising:

[0033] A storage module on which an executable program is stored;

[0034] One or more processors, wherein the one or more processors are capable of calling the executable program so that the one or more processors implement a method for generating a correspondence relationship for a micro-ring modulator provided in the first aspect of the embodiment of the present disclosure, and / or a method for controlling a micro-ring modulator provided in the second aspect of the embodiment of the present disclosure;

[0035] One or more I / O interfaces are connected between the processor and the memory and are configured to implement information interaction between the processor and the memory.

[0036] In a fourth aspect, an embodiment of the present disclosure provides a control system of a micro-ring modulator, including:

[0037] A control device for a micro-ring modulator, wherein the control device is the control device for the micro-ring modulator according to the third aspect of the present disclosure;

[0038] The temperature sensor is used to obtain the current temperature of at least one micro-ring modulator under the control of the control device.

[0039] In some embodiments, the control system further comprises:

[0040] An optical splitter is used to split the output optical signal modulated by the micro-ring modulator to obtain a detection optical signal;

[0041] The optical power detector is used to detect the power of the output optical signal through the detection optical signal to obtain a detection electrical signal, and input the detection electrical signal into the control device.

[0042] In a fifth aspect, an embodiment of the present disclosure provides a computer-readable medium having an executable program stored thereon, and when the executable program is executed, it is capable of implementing a method for generating a correspondence relationship for a micro-ring modulator provided in the first aspect of the embodiment of the present disclosure, and / or a method for controlling a micro-ring modulator provided in the second aspect of the embodiment of the present disclosure.

[0043] In the embodiment of the present disclosure, by determining the value of the control parameter when the modulation efficiency of the micro-ring modulator is maximized under multiple test temperatures, a correspondence between the temperature of the micro-ring modulator and the value of the control parameter when the modulation efficiency of the micro-ring modulator is maximized is generated. After the correspondence is pre-stored in the control device of the micro-ring modulator, the control device can determine the value of the corresponding control parameter by obtaining the ambient temperature of the micro-ring modulator, and control the modulation efficiency of the micro-ring modulator, thereby improving the reaction rate of the control device and the stability of the modulation power of the micro-ring modulator. In addition, when the micro-ring modulator has good consistency, the embodiment of the present disclosure is also conducive to the large-scale production of micro-ring modulators. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A flow chart of a method for generating a correspondence relationship for a micro-ring modulator provided in an embodiment of the present disclosure;

[0045] Figure 2 A flowchart of some steps of another method for generating a correspondence relationship for a micro-ring modulator provided by an embodiment of the present disclosure;

[0046] Figure 3 A flowchart of some steps of a method for generating a correspondence relationship for a micro-ring modulator provided by an embodiment of the present disclosure;

[0047] Figure 4 A flowchart of some steps of a method for generating a correspondence relationship for a micro-ring modulator provided by an embodiment of the present disclosure;

[0048] Figure 5 A flowchart of some steps of a method for generating a correspondence relationship for a micro-ring modulator provided by an embodiment of the present disclosure;

[0049] Figure 6 A flow chart of a control method of a micro-ring modulator provided in an embodiment of the present disclosure;

[0050] Figure 7 A block diagram of a control device for a micro-ring modulator provided in an embodiment of the present disclosure;

[0051] Figure 8 A block diagram of a control system of a micro-ring modulator provided in an embodiment of the present disclosure;

[0052] Fig. 9 A block diagram of a computer-readable medium provided for an embodiment of the present disclosure;

[0053] Fig.10 A schematic diagram of a control system of a micro-ring modulator provided in an embodiment of the present disclosure;

[0054] Fig.11 A schematic diagram of a control system of another micro-ring modulator provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the technical solution of the present invention, the corresponding relationship generating method for a micro-ring modulator, the control method of a micro-ring modulator, the control device of a micro-ring modulator, the control system of a micro-ring modulator, and the computer-readable medium provided by the present invention are described in detail below in conjunction with the accompanying drawings.

[0056] Example embodiments will be described more fully below with reference to the accompanying drawings, but the example embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, the purpose of providing these embodiments is to make the present disclosure thorough and complete and to enable those skilled in the art to fully understand the scope of the present disclosure.

[0057] In the absence of conflict, the various embodiments of the present disclosure and the various features therein may be combined with each other.

[0058] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0059] The terms used herein are only used to describe specific embodiments and are not intended to limit the present disclosure. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It will also be understood that when the terms "comprising" and / or "made of" are used in this specification, the presence of the features, wholes, steps, operations, elements and / or components is specified, but the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof is not excluded.

[0060] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted as having an idealized or overly formal meaning unless explicitly defined as such herein.

[0061] The inventors of the disclosed embodiments have found through research that the micro-ring modulator is a wavelength-sensitive device, and changes in the ambient temperature of the micro-ring modulator will affect its modulation efficiency.

[0062] First, refer to Figure 1 The embodiment of the present disclosure provides a method for generating a correspondence relationship for a micro-ring modulator, comprising:

[0063] In step S100, peak control parameter values ​​of the micro-ring modulator at multiple test temperatures are determined respectively, wherein the peak control parameter value is a control parameter value when the modulation efficiency of the micro-ring modulator reaches a peak value;

[0064] In step S200, the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value is determined.

[0065] In the disclosed embodiment, the control device of the micro-ring modulator controls the modulation efficiency of the micro-ring modulator by outputting a control parameter to the micro-ring modulator. When the ambient temperature of the micro-ring modulator changes and the modulation efficiency of the micro-ring is reduced, the modulation efficiency of the micro-ring modulator can be returned to the maximum value by modulating the value of the output control parameter.

[0066] In the disclosed embodiment, as an optional implementation, the control parameter is a temperature control parameter for controlling the temperature of the micro-ring modulator. The control device stabilizes the modulation efficiency of the fine-tuning modulator by adjusting the temperature of the micro-ring modulator.

[0067] It should be noted that in the disclosed embodiment, the peak value of the modulation efficiency of the micro-ring modulator refers to the maximum value of the modulation efficiency of the micro-ring modulator. The disclosed embodiment does not specifically limit the specific method of obtaining the peak value. For example, the theoretical maximum value that the modulation efficiency of the micro-ring modulator can reach, that is, the theoretical peak value, is taken as the peak value. When the modulation efficiency of the micro-ring modulator reaches the theoretical peak value, it is determined that the modulation efficiency of the micro-ring modulator reaches the peak value. The peak value can also be determined by dynamic adjustment, that is, continuously adjusting the value of the control parameter and detecting the modulation efficiency of the micro-ring modulator, and the maximum value that the modulation efficiency of the micro-ring modulator can reach during the adjustment process is taken as the peak value.

[0068] In the disclosed embodiment, the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value determined by steps S100 to S200 is pre-stored in the control device of the micro-ring modulator. When the ambient temperature of the micro-ring modulator changes, the modulation efficiency of the micro-ring modulator is stabilized by the pre-stored corresponding relationship.

[0069] It should be noted that, in step S100, the more different test temperatures are selected and the smaller the intervals between the selected test temperatures are, when the control device controls the modulation efficiency of the micro-ring modulator according to the pre-stored corresponding relationship, the higher the control accuracy is and the more stable the modulation efficiency of the micro-ring modulator is.

[0070] It should also be noted that when a control device controls multiple micro-ring modulators, the corresponding relationship of each micro-ring modulator can be generated through step S100 to step S200. In addition, when the consistency of multiple micro-ring modulators is good, the corresponding relationship of one micro-ring modulator generated through step S100 to step S200 can be used for multiple micro-rings, which is conducive to the large-scale production of micro-ring modulators.

[0071] It should also be noted that in the embodiment of the present disclosure, the corresponding relationship between the temperature of the micro-ring modulator and the value of the control parameter when the modulation efficiency of the micro-ring modulator is maximized is generated through steps S100 to S200, and the corresponding relationship is pre-stored in the control device of the micro-ring modulator. When the ambient temperature of the micro-ring modulator changes, the modulation efficiency of the micro-ring modulator is controlled by the pre-stored corresponding relationship. The calculation process of the control parameter value when the modulation efficiency of the micro-ring modulator reaches the maximum value by calculating the temperature and other parameters is omitted, thereby improving the reaction rate of the control device; in addition, due to the small size of the micro-ring, it is difficult to detect the internal temperature of the micro-ring, and the micro-ring temperature must be detected by detecting the values ​​of other variables related to the micro-ring temperature. In the embodiment of the present disclosure, the corresponding relationship between the ambient temperature and the peak control parameter value is established. The value of the corresponding control parameter can be determined by obtaining the ambient temperature, eliminating the process of calculating or judging the change of the micro-ring temperature by other variables related to the micro-ring temperature, thereby further improving the reaction rate of the control device and improving the stability of the modulation power of the micro-ring modulator.

[0072] The corresponding relationship generation method for a micro-ring modulator provided in an embodiment of the present disclosure generates a corresponding relationship between the temperature of the micro-ring modulator and the value of the control parameter when the modulation efficiency of the micro-ring modulator is maximized by determining the value of the control parameter when the modulation efficiency of the micro-ring modulator is maximized under multiple test temperatures. After the corresponding relationship is pre-stored in the control device of the micro-ring modulator, the control device can determine the value of the corresponding control parameter by obtaining the ambient temperature of the micro-ring modulator, and control the modulation efficiency of the micro-ring modulator, thereby improving the reaction rate of the control device and the stability of the modulation power of the micro-ring modulator. In addition, when the micro-ring modulator has good consistency, the corresponding relationship generated by the corresponding relationship generation method provided in the present disclosure can also be applied to the large-scale production of micro-ring modulators.

[0073] In some embodiments, reference Figure 2 In step S100, for any test temperature, the step of determining the peak control parameter value of the micro-ring modulator at the current test temperature includes:

[0074] In step S110, it is determined whether the modulation efficiency of the micro-ring modulator reaches a peak value;

[0075] In step S120, when the modulation efficiency of the micro-ring modulator has not reached a peak value, the control parameter of the micro-ring modulator is adjusted until the modulation efficiency of the micro-ring modulator reaches a peak value, and the value of the control parameter when the modulation efficiency of the micro-ring modulator reaches a peak value is used as the peak control parameter value.

[0076] In some embodiments, reference Figure 2 In step S100, after step S110, the corresponding relationship generating method further includes:

[0077] In step S130, when the modulation efficiency of the micro-ring modulator reaches a peak value, the value of the current control parameter is used as the peak control parameter value.

[0078] Accordingly, refer to Figure 2 In some embodiments, step S100 further includes:

[0079] In step S140, the peak control parameter value is recorded.

[0080] In some embodiments, reference Figure 3 , step S110 includes:

[0081] In step S111, it is determined whether the modulation efficiency of the micro-ring modulator reaches a peak value according to the received detection electrical signal.

[0082] In the embodiment of the present disclosure, an optical splitter is used to split the output optical signal modulated by the micro-ring modulator to obtain a detection optical signal, and then an optical power detector (PD, Power Detector) is used to detect the power of the output optical signal through the detection optical signal to obtain the detection electrical signal described in step S111.

[0083] In some embodiments, the optical splitter splits the output optical signal according to any splitting ratio in the range of 1:8 to 1:10, and uses the obtained low-power optical signal as the detection optical signal. As an optional implementation, the output optical signal is split according to a splitting ratio of 1:9.

[0084] In the disclosed embodiment, a heating resistor is embedded in the micro-ring modulator, and the control device controls the heating resistor to adjust the temperature of the micro-ring controller through a digital-to-analog converter (DAC) therein, thereby controlling the modulation efficiency of the micro-ring modulator. Accordingly, the control parameter in step S100 is the parameter for controlling the heating resistor.

[0085] As an optional implementation of the disclosed embodiment, the control device of the micro-ring modulator can obtain the actual temperature of each micro-ring modulator, and generate a corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value according to the actual ambient temperature, so as to further improve the control accuracy and the stability of the modulation efficiency of the micro-ring modulator. In some embodiments, a temperature sensor is respectively provided for each micro-ring modulator, and the control device reads the actual ambient temperature of each micro-ring modulator through each temperature sensor.

[0086] Accordingly, refer to Figure 4 , step S200 includes:

[0087] In step S201, when the modulation efficiency of the micro-ring modulator reaches a peak value, the actual ambient temperature of the micro-ring modulator is obtained;

[0088] In step S202, the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter is determined according to the actual ambient temperature.

[0089] In some embodiments, the control device controls the heating resistor to adjust the temperature of the micro-ring controller through a DAC value, and the peak control parameter value is the DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value.

[0090] In some embodiments, the correspondence between the temperature of the micro-ring modulator and the peak control parameter value stored in the control device of the embodiment of the present disclosure is a curve of the mapping relationship between the DAC value and the ambient temperature when the modulation efficiency of the micro-ring modulator reaches the peak value.

[0091] Accordingly, refer to Figure 5 In some embodiments, step S200 includes:

[0092] In step S210, a curve of DAC value when the modulation efficiency of the microring modulator reaches a peak value versus temperature is generated according to the temperature of the microring modulator and the corresponding DAC value when the modulation efficiency of the microring modulator reaches a peak value.

[0093] Second, refer to Figure 6 The present disclosure provides a control method for a micro-ring modulator, including:

[0094] In step S310, determining the current ambient temperature of at least one micro-ring modulator;

[0095] In step S320, according to the pre-stored correspondence between the temperature of each micro-ring modulator and the peak control parameter value, the peak control parameter value of each micro-ring modulator corresponding to the current ambient temperature of each micro-ring modulator is output to control the modulation efficiency of each micro-ring modulator to reach the peak value;

[0096] The peak control parameter value is the value of the control parameter when the modulation efficiency of the micro-ring modulator reaches a peak value.

[0097] In some embodiments, the peak control parameter value includes a DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value.

[0098] In some embodiments, for each micro-ring modulator, the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value includes a curve showing the variation of the DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value with the temperature.

[0099] In the control method of a micro-ring modulator provided by the embodiment of the present disclosure, the corresponding relationship between the ambient temperature and the value of the control parameter when the modulation efficiency of the micro-ring modulator is maximized is pre-stored in the control device of the micro-ring modulator. The value of the corresponding control parameter is determined by obtaining the ambient temperature of the micro-ring modulator, and the modulation efficiency of the micro-ring modulator is controlled, thereby improving the response rate of the control device and enhancing the stability of the modulation power of the micro-ring modulator.

[0100] Thirdly, refer to Figure 7 The present disclosure provides a control device for a micro-ring modulator, comprising:

[0101] One or more processors 201;

[0102] A memory 202, on which one or more programs are stored, and when the one or more programs are executed by one or more processors, the one or more processors implement any one of the above-mentioned methods for generating a corresponding relationship for a micro-ring modulator, or any one of the above-mentioned methods for controlling a micro-ring modulator;

[0103] One or more I / O interfaces 203 are connected between the processor and the memory and are configured to implement information exchange between the processor and the memory.

[0104] Among them, the processor 201 is a device with data processing capabilities, including but not limited to a central processing unit (CPU), etc.; the memory 202 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH); the I / O interface (read-write interface) 203 is connected between the processor 201 and the memory 202, and can realize information interaction between the processor 201 and the memory 202, including but not limited to a data bus (Bus), etc.

[0105] In some embodiments, the processor 201 , the memory 202 , and the I / O interface 203 are connected to each other via a bus 204 , and further connected to other components of the computing device.

[0106] The corresponding relationship generating method for the micro-ring modulator and the control method of the micro-ring modulator have been introduced in detail above, and will not be repeated here.

[0107] Fourthly, refer to Figure 8 The present disclosure provides a control system of a micro-ring modulator, including:

[0108] A control device 101 of a micro-ring modulator, wherein the control device is the control device of the micro-ring modulator according to the third aspect of the present disclosure;

[0109] The temperature sensor 102 is used to obtain the current temperature of at least one micro-ring modulator under the control of the control device.

[0110] In some embodiments, the control system further comprises:

[0111] An optical splitter 103 is used to split the output optical signal modulated by the micro-ring modulator to obtain a detection optical signal;

[0112] The optical power detector 104 is used to detect the power of the output optical signal through the detection optical signal to obtain a detection electrical signal, and input the detection electrical signal into the control device.

[0113] In the disclosed embodiment, the corresponding relationship between the temperature of the micro-ring modulator and the value of the control parameter when the modulation efficiency of the micro-ring modulator is maximized is pre-stored in the control device of the control system. The control system can determine the value of the corresponding control parameter by obtaining the ambient temperature of the micro-ring modulator according to the stored corresponding relationship, and control the modulation efficiency of the micro-ring modulator, thereby improving the reaction rate of the control system and the stability of the modulation power of the micro-ring modulator. In addition, when the micro-ring modulator has good consistency, the disclosed embodiment is also conducive to the large-scale production of the micro-ring modulator.

[0114] Fifth, refer to Fig. 9 The embodiment of the present disclosure provides a computer-readable medium on which a computer program is stored. When the program is executed by a processor, any one of the above-mentioned methods for generating a correspondence relationship for a micro-ring modulator or any one of the above-mentioned methods for controlling a micro-ring modulator is implemented.

[0115] The corresponding relationship generating method for the micro-ring modulator and the control method of the micro-ring modulator have been introduced in detail above, and will not be repeated here.

[0116] In order to enable those skilled in the art to more clearly understand the technical solution provided by the present invention, the technical solution provided by the present invention is described in detail below through specific embodiments:

[0117] Embodiment 1

[0118] Fig.10 It is a schematic diagram of a control system of a micro-ring modulator provided in an embodiment of the present disclosure.

[0119] exist Fig.10 In the embodiment, the control circuit is the control device of the micro-ring modulator in the disclosed embodiment, and the control circuit, the temperature sensor, the PD detector and the spectrometer constitute the control system of the micro-ring modulator.

[0120] like Fig.10In the control system shown, the laser inputs an optical signal into the micro-ring modulator, the signal generator sends a modulated electrical signal, which is loaded into the micro-ring modulator, and the output optical signal is obtained after modulation by the micro-ring modulator. The output optical signal modulated by the micro-ring modulator is split by an optical splitter to obtain a detection optical signal; the PD detector detects the power of the output optical signal through the detection optical signal to obtain a detection electrical signal. In the first embodiment of the present invention, the detection signal output by the PD detector is an output voltage, and the output voltage of the PD detector has a good linear correspondence with the optical power of the input light. The control circuit determines whether the modulation efficiency of the micro-ring modulator has reached a peak value based on the detection electrical signal.

[0121] In the first embodiment, the optical splitter splits the output optical signal according to any splitting ratio in the range of 1:8 to 1:10, and uses the obtained low-power optical signal as the detection optical signal. More specifically, in the first embodiment, the optical splitter splits the output optical signal according to a splitting ratio of 1:9.

[0122] Embodiment 2

[0123] Fig.11 A schematic diagram of a control system of a micro-ring modulator provided in an embodiment of the present disclosure. Fig.11 In the embodiment, the control circuit E701 controls the micro-ring modulators E501 and E502 simultaneously.

[0124] exist Fig.11 In the figure, the control circuit E701 is the control device of the micro-ring modulator in the embodiment of the present disclosure, and the control circuit E701, temperature sensors E901, E902, PD detectors E801, E802 and spectrometers E402, E403 constitute the control system of the micro-ring modulator.

[0125] The tunable wavelength laser E101 outputs a laser signal E201, which is split into two optical signals E202 and E203 with the same optical power by a 1:1 optical splitter E401 and input to micro-ring modulators E501 and E502 respectively;

[0126] Modulated electrical signals E1201 and E1202 are generated by signal generator E301 and loaded into micro-ring modulators E501 and E502 respectively;

[0127] Micro-ring modulators E501 and E502 modulate input optical signals E202 and E203 to obtain output optical signals E204 and E205;

[0128] The output optical signals E204 and E205 are respectively split into weak light E206 and E208, and strong light E207 and E209 by 1:9 optical splitters E402 and E403;

[0129] The weak light E206 and E208 are used as detection light signals to form feedback signals E601 and E602 through PD detectors E801 and E802 respectively;

[0130] Feedback the feedback signals E601 and E602 to the control circuit E701;

[0131] The digital-to-analog converters (DAC) E702 and E703 of the control circuit E701 adjust the outputs respectively, and output the DAC values ​​D11 and D21 to the resistors E1001 and E1002 of the micro-rings built in the micro-ring modulators E501 and E502 respectively, so as to adjust the temperature of the micro-ring modulators E501 and E502, so as to maximize the modulation efficiency of the micro-ring modulators E501 and E502;

[0132] The temperature readers E704 and E705 of the control circuit E701 record the current ambient temperatures T11 and T21 through the temperature sensors E901 and E902 respectively;

[0133] Repeat the above steps by changing the ambient temperature to read the ambient temperatures T12 and T22 and the corresponding DAC values ​​D12 and D22 of the micro-ring modulators E501 and E502 when the modulation efficiency is the maximum;

[0134] Repeat the above steps by changing the ambient temperature to establish the ambient temperatures T1n, T2n and the corresponding DAC values ​​D1n, D2n of the micro-ring modulators E501, E502 when the modulation efficiency is maximum, generate curves Q1101, Q1102 of the DAC values ​​of the micro-ring modulators E501, E502 changing with the ambient temperature, and pre-store them in the memory of the control circuit E701, so as to control the micro-ring modulators E501, E502 respectively according to the curves Q1101, Q1102, so as to maximize the modulation efficiency of the micro-ring modulators E501, E502.

[0135] It should be noted that, although in Example 2, only the situation in which the control circuit E701 controls two micro-ring modulators E501 and E502 at the same time is disclosed, in the embodiments disclosed herein, it is not limited to the situation in Example 2 in which the control circuit E701 controls two micro-ring modulators E501 and E502 at the same time. For example, the control circuit can control four or more micro-ring modulators at the same time. The embodiments disclosed herein do not specifically limit the number of micro-ring modulators that the control circuit can control at the same time.

[0136] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0137] Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should be interpreted only in a general illustrative sense and not for limiting purposes. In some instances, it will be apparent to those skilled in the art that, unless otherwise expressly noted, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, those skilled in the art will appreciate that various changes in form and detail may be made without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

1. A method for generating a correspondence relationship for a micro-ring modulator, comprising: Determine peak control parameter values ​​of the micro-ring modulator at multiple test temperatures respectively, wherein the peak control parameter values ​​are control parameter values ​​when the modulation efficiency of the micro-ring modulator reaches a peak value; Determining a corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value; The control parameter includes a digital-to-analog conversion DAC value, and the peak control parameter value includes a DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value.

2. The method according to claim 1, wherein: For any test temperature, the step of determining the peak control parameter value of the micro-ring modulator at the current test temperature comprises: Determining whether the modulation efficiency of the micro-ring modulator reaches a peak value; When the modulation efficiency of the micro-ring modulator has not reached a peak value, the control parameter of the micro-ring modulator is adjusted until the modulation efficiency of the micro-ring modulator reaches a peak value, and the value of the control parameter when the modulation efficiency of the micro-ring modulator reaches a peak value is used as the peak control parameter value.

3. The method according to claim 2, wherein: After the step of determining whether the modulation efficiency of the micro-ring modulator reaches a peak value, the corresponding relationship generation method further includes: When the modulation efficiency of the micro-ring modulator reaches a peak value, the value of the current control parameter is used as the peak control parameter value.

4. The method according to claim 2 or 3, wherein: For any test temperature, the step of determining the peak control parameter value of the micro-ring modulator at the current test temperature further includes: The peak control parameter value is recorded.

5. The method according to claim 2 or 3, wherein: The step of judging whether the modulation efficiency of the micro-ring modulator reaches a peak value comprises: determining whether the modulation efficiency of the micro-ring modulator reaches a peak value according to the received detection electrical signal; Wherein, the detection electrical signal is generated according to the following steps: Splitting the output optical signal modulated by the micro-ring modulator to obtain a detection optical signal; The power of the output optical signal is detected by the detection optical signal to obtain a detection electrical signal.

6. The method according to any one of claims 1 to 3, wherein: The step of determining the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value comprises: When the modulation efficiency of the micro-ring modulator reaches a peak value, obtaining the actual ambient temperature of the micro-ring modulator; The corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter is determined according to the actual ambient temperature.

7. The method according to claim 1, wherein: The step of determining the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value comprises: According to the temperature of the micro-ring modulator and the corresponding DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value, a curve showing the variation of the DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value with temperature is generated.

8. A control method for a micro-ring modulator, comprising: determining a current temperature of at least one micro-ring modulator; According to the pre-stored correspondence between the temperature of each micro-ring modulator and the peak control parameter value, output the peak control parameter value of each micro-ring modulator corresponding to the current temperature of each micro-ring modulator, so as to control the modulation efficiency of each micro-ring modulator to reach the peak value; Wherein, the peak control parameter value is the value of the control parameter when the modulation efficiency of the micro-ring modulator reaches the peak value; The control parameter includes a digital-to-analog conversion DAC value, and the peak control parameter value includes a DAC value when the modulation efficiency of the micro-ring modulator reaches a peak value.

9. The control method according to claim 8, wherein: For each micro-ring modulator, the corresponding relationship between the temperature of the micro-ring modulator and the peak control parameter value includes a curve showing the variation of the DAC value with the temperature when the modulation efficiency of the micro-ring modulator reaches the peak value.

10. A control device for a micro-ring modulator, comprising: A storage module on which an executable program is stored; One or more processors, wherein the one or more processors are capable of calling the executable program so that the one or more processors implement the corresponding relationship generating method for a micro-ring modulator according to any one of claims 1 to 7, and / or the control method of a micro-ring modulator according to any one of claims 8 to 9; One or more I / O interfaces are connected between the processor and the memory and are configured to implement information interaction between the processor and the memory.

11. A control system for a micro-ring modulator, comprising: A control device for a micro-ring modulator, wherein the control device is the control device for a micro-ring modulator according to claim 10; The temperature sensor is used to obtain the current temperature of at least one micro-ring modulator under the control of the control device.

12. The control system according to claim 11, wherein: The control system further comprises: An optical splitter is used to split the output optical signal modulated by the micro-ring modulator to obtain a detection optical signal; The optical power detector is used to detect the power of the output optical signal through the detection optical signal to obtain a detection electrical signal, and input the detection electrical signal into the control device.

13. A computer-readable medium having an executable program stored thereon, wherein when the executable program is executed, the method for generating a correspondence relationship for a micro-ring modulator according to any one of claims 1 to 7 and / or the method for controlling a micro-ring modulator according to any one of claims 8 to 9 can be implemented.

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