Voltage setting method, device, equipment and readable storage medium

Abstract

This invention provides a voltage setting method, apparatus, device, and readable storage medium. The method includes: starting from a first preset voltage value, gradually increasing the voltage value of an adjusting element according to a preset step size until the voltage value of the adjusting element reaches a second preset voltage value; recording a first monitoring value corresponding to the optical signal intensity at the input of a micro-ring modulator and a second monitoring value corresponding to the optical signal intensity at the output of the micro-ring modulator at each voltage value, wherein the second monitoring value changes with the voltage value of the adjusting element; determining whether there is distortion in the resonant filter spectrum of the micro-ring modulator based on the recorded information; selecting a target second monitoring value from the recorded second monitoring values ​​according to a selection strategy corresponding to the determination result; and setting the voltage value of the adjusting element to the voltage value corresponding to the target second monitoring value. Through this invention, the wavelength of the incident optical signal is positioned at a specific location in the filter spectrum of the micro-ring modulator.

Description

Technical Field

[0001] This invention relates to the field of optical communication technology, and in particular to a voltage setting method, apparatus, device, and readable storage medium. Background Technology

[0002] Microring resonator modulators based on silicon-based photonics integration platforms possess advantages such as small size and high integration density, making them a promising area for low-power, large-scale optical communication integrated chips and a focus of industry research. Currently, some leading international companies, such as Intel, have already showcased product samples based on silicon-based microring modulators and are rapidly moving towards practical applications. However, due to the very small operating wavelength range of microring modulators, adjusting the resonant wavelength of the microring modulator to ensure the incident light signal wavelength is at a specific position within the microring modulator's filter spectrum remains a critical technical challenge in practical applications. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention provides a voltage setting method, apparatus, device, and readable storage medium.

[0004] In a first aspect, the present invention provides a voltage setting method, the voltage setting method comprising:

[0005] Starting from the first preset voltage value, the voltage value of the regulating element is gradually increased according to the preset step size until the voltage value of the regulating element reaches the second preset voltage value. The first monitoring value corresponding to the optical signal intensity at the input end of the micro-ring modulator and the second monitoring value corresponding to the optical signal intensity at the output end of the micro-ring modulator are recorded at each voltage value. The second monitoring value changes with the voltage value of the regulating element.

[0006] Based on the recorded information, determine whether there is distortion in the resonant filter spectrum of the micro-ring modulator;

[0007] Based on the selection strategy corresponding to the judgment result, a target second monitoring value is selected from the recorded second monitoring values, and the voltage value of the regulating element is set to the voltage value corresponding to the target second monitoring value.

[0008] Optionally, the step of determining whether there is distortion in the resonant filter spectrum of the micro-ring modulator based on the recorded information includes:

[0009] Determine the voltage value Vf corresponding to the minimum second monitoring value, and the two voltage values ​​Va and Vb corresponding to the two second monitoring values ​​that have the same difference from their respective first monitoring values;

[0010] Calculate the absolute value of the difference between Vf and Va, V1; calculate the absolute value of the difference between Vf and Vb, V2.

[0011] Detect whether the absolute value of the difference between V1 and V2 is less than or equal to a preset threshold;

[0012] If the absolute value of the difference between V1 and V2 is less than or equal to the preset threshold, then it is determined that there is no distortion in the resonant filter spectrum of the micro-ring modulator.

[0013] If the absolute value of the difference between V1 and V2 is greater than the preset threshold, then it is determined that the resonant filter spectrum of the micro-ring modulator is distorted.

[0014] Optionally, the two second monitoring values ​​that are equal to the difference between their respective first monitoring values ​​are both greater than the product of the third proportional coefficient and the maximum second monitoring value.

[0015] Optionally, the step of selecting the target second monitoring value from the recorded second monitoring values ​​according to the selection strategy corresponding to the judgment result includes:

[0016] When the resonant filter spectrum of the micro-ring modulator is free from distortion, any locking direction is selected. The locking direction includes a falling direction and a rising direction. The second monitoring value recorded in the falling direction is the second monitoring value corresponding to a voltage value less than Vf, and the second monitoring value recorded in the rising direction is the second monitoring value corresponding to a voltage value greater than Vf.

[0017] Select any second monitoring value within a preset range from the second monitoring values ​​recorded corresponding to the selected locking direction as the target second monitoring value. The lower limit of the preset range is the product of the first proportional coefficient and the maximum second monitoring value, and the upper limit of the preset range is the product of the second proportional coefficient and the maximum second monitoring value. The second proportional coefficient is greater than the first proportional coefficient.

[0018] Optionally, the step of selecting the target second monitoring value from the recorded second monitoring values ​​according to the selection strategy corresponding to the judgment result includes:

[0019] When the resonant filter spectrum of the micro-ring modulator is distorted, determine the maximum value of V1 and V2;

[0020] When the voltage value corresponding to the maximum value is less than Vf, the locking direction is determined to be the downward direction. Any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the downward direction as the target second monitoring value. The recorded second monitoring value corresponding to the downward direction is the second monitoring value corresponding to the voltage value less than Vf.

[0021] When the voltage value corresponding to the maximum value is greater than Vf, the locking direction is determined to be the upward direction. Any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the upward direction as the target second monitoring value. The recorded second monitoring value corresponding to the upward direction is the second monitoring value corresponding to the voltage value greater than Vf.

[0022] Optionally, after the step of setting the voltage value of the regulating element to the voltage value corresponding to the target second monitoring value, the method further includes:

[0023] When the second monitoring value is detected to be outside the preset range, the voltage adjustment direction is determined according to the locking direction.

[0024] The voltage value of the regulating element is adjusted based on the voltage value adjustment direction until the second monitoring value is the target second monitoring value.

[0025] Optionally, after the step of setting the voltage value of the regulating element to the voltage value corresponding to the target second monitoring value, the method further includes:

[0026] When a change is detected in the first monitoring value corresponding to the optical signal intensity at the input of the micro-ring modulator, and the change amplitude is greater than the preset amplitude, the process returns to the step of starting from the first preset voltage value, gradually increasing the voltage value of the adjustment element according to the preset step size, until the voltage value of the adjustment element reaches the second preset voltage value, and recording the first monitoring value corresponding to the optical signal intensity at the input of the micro-ring modulator and the second monitoring value corresponding to the optical signal intensity at the output of the micro-ring modulator at each voltage value.

[0027] In a second aspect, the present invention also provides a voltage setting device, the voltage setting device comprising:

[0028] The recording module is used to gradually increase the voltage value of the regulating element from a first preset voltage value according to a preset step size until the voltage value of the regulating element reaches a second preset voltage value, and record the first monitoring value corresponding to the optical signal intensity at the input end of the micro-ring modulator and the second monitoring value corresponding to the optical signal intensity at the output end of the micro-ring modulator at each voltage value, wherein the second monitoring value changes with the voltage value of the regulating element.

[0029] The judgment module is used to determine whether there is distortion in the resonant filter spectrum of the micro-ring modulator based on the recorded information;

[0030] The setting module is used to select a target second monitoring value from the recorded second monitoring values ​​according to the selection strategy corresponding to the judgment result, and set the voltage value of the adjustment element to the voltage value corresponding to the target second monitoring value.

[0031] Thirdly, the present invention also provides a voltage setting device, the voltage setting device including a processor, a memory, and a voltage setting program stored in the memory and executable by the processor, wherein when the voltage setting program is executed by the processor, it implements the steps of the voltage setting method as described above.

[0032] Fourthly, the present invention also provides a readable storage medium storing a voltage setting program, wherein when the voltage setting program is executed by a processor, it implements the steps of the voltage setting method as described above.

[0033] In this invention, starting from a first preset voltage value, the voltage value of the adjusting element is gradually increased according to a preset step size until the voltage value of the adjusting element reaches a second preset voltage value. At each voltage value, a first monitoring value corresponding to the optical signal intensity at the input of the micro-ring modulator and a second monitoring value corresponding to the optical signal intensity at the output of the micro-ring modulator are recorded. The second monitoring value changes with the voltage value of the adjusting element. Based on the recorded information, it is determined whether there is distortion in the resonant filter spectrum of the micro-ring modulator. According to the selection strategy corresponding to the determination result, a target second monitoring value is selected from the recorded second monitoring values, and the voltage value of the adjusting element is set to the voltage value corresponding to the target second monitoring value. Through this invention, since the second monitoring value corresponds to the optical signal intensity at the output of the micro-ring modulator, and its value is related to the filter spectrum of the micro-ring modulator, or in other words, its value is used to reflect the micro-ring filter spectrum, setting the voltage value of the adjusting element to the voltage value corresponding to the target second monitoring value ensures that the wavelength of the incident light signal is at a specific position in the filter spectrum of the micro-ring modulator. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating an embodiment of the voltage setting method of the present invention;

[0035] Figure 2 This is a schematic diagram illustrating a scenario of voltage value adjustment and monitoring value recording in one embodiment of the voltage setting method of the present invention;

[0036] Figure 3 This is a schematic diagram of the resonant filter spectrum of a micro-ring modulator in one embodiment;

[0037] Figure 4 This is a schematic diagram of the resonant filter spectrum of the micro-ring modulator when the incident light power is relatively low in one embodiment;

[0038] Figure 5 This is a schematic diagram of the resonant filter spectrum of the micro-ring modulator when the incident light power is relatively high in one embodiment;

[0039] Figure 6 This is a diagram showing the correspondence between voltage values ​​and monitored values ​​in one embodiment of the voltage setting method of the present invention;

[0040] Figure 7 This is a functional module diagram of an embodiment of the voltage setting device of the present invention;

[0041] Figure 8 This is a schematic diagram of the hardware structure of the voltage setting device involved in the embodiment of the present invention.

[0042] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0044] In a first aspect, embodiments of the present invention provide a voltage setting method.

[0045] In one embodiment, reference is made to Figure 1 , Figure 1 This is a schematic flowchart illustrating an embodiment of the voltage setting method of the present invention. Figure 1 As shown, the voltage setting method includes:

[0046] Step S10: Starting from the first preset voltage value, gradually increase the voltage value of the adjusting element according to the preset step size until the voltage value of the adjusting element reaches the second preset voltage value, and record the first monitoring value corresponding to the optical signal intensity at the input end of the micro-ring modulator and the second monitoring value corresponding to the optical signal intensity at the output end of the micro-ring modulator at each voltage value, wherein the second monitoring value changes with the voltage value of the adjusting element.

[0047] In this embodiment, the input light enters through the straight waveguide input end of the micro-ring modulator and exits through the straight waveguide output end. Therefore, at the straight waveguide input end, a portion of the light can be split off by beam splitter 1 and sent to monitoring detector 1 (MPD1) to monitor the optical signal intensity at the input end of the micro-ring modulator. At the straight waveguide output end, a portion of the light can be split off by beam splitter 2 and sent to monitoring detector 2 (MPD2) to monitor the optical signal intensity at the output end of the micro-ring modulator.

[0048] The first and second monitoring values ​​can be the current values ​​monitored by MPD1 and MPD2, respectively. Of course, they can also be values ​​in other units obtained by monitoring the optical signal intensity at the input and output of the micro-ring modulator by other sensors, and there are no restrictions here.

[0049] Furthermore, considering that the current values ​​monitored by MPD1 and MPD2 are relatively small, which is not conducive to data processing, a transimpedance amplifier (TIA) can be connected after MPD1 and MPD2 respectively. For example, TIA1 can be connected after MPD1 and TIA2 can be connected after MPD2. In this way, the current value monitored by MPD1 can be converted into a voltage value through TIA1, and the current value monitored by MPD2 can be converted into a voltage value through TIA2. This increases the numerical value to a certain extent and reduces the complexity of data processing.

[0050] Reference Figure 2 , Figure 2This is a schematic diagram illustrating a scenario of voltage value adjustment and monitoring value recording in one embodiment of the voltage setting method of the present invention. Figure 2 As shown, the microring modulator section includes a straight waveguide and a microring waveguide. The microring waveguide forms a resonant cavity filter, and a microring wavelength adjustment element (i.e., adjustment element) is fabricated on the microring waveguide. Input light enters through the straight waveguide input terminal of the microring modulator and exits through the straight waveguide output terminal. Due to the resonance effect of the microring, for input light whose wavelength meets its resonance condition, most of the optical power will be coupled into the microring resonant cavity to form resonance, thus reducing the optical power output from the straight waveguide output terminal. The closer the wavelength of the input light is to the microring resonant wavelength, the smaller the optical power output from the straight waveguide output terminal will be.

[0051] The micro-ring modulator contains two monitoring detectors (MPDs). A portion of the light from the input of the straight waveguide is split by a beam splitter 1 and sent to MPD1 to monitor the intensity of the input optical signal. A portion of the light from the output of the straight waveguide is split by a beam splitter 2 and sent to MPD2 to monitor the intensity of the output optical signal from the straight waveguide of the micro-ring modulator.

[0052] The wavelength and operating voltage control circuit includes two transimpedance amplifiers (TIA1 and TIA2). TIA1 and TIA2 convert the photocurrents detected by MPD1 and MPD2 into voltage signals, respectively, and input them to the signal processing unit. The signal processing unit records the received voltage signals and the current voltage value of the adjustment element.

[0053] Specifically, the signal processing unit controls the voltage output unit to output a first preset voltage value to the regulating element, and then receives a first monitoring value V11 from TIA1 and a second monitoring value from TIA2. Figure 2 MPD2_b)V21 in the middle, thereby recording the first monitoring value V11 corresponding to the optical signal intensity at the input end of the micro-ring modulator and the second monitoring value V21 corresponding to the optical signal intensity at the output end of the micro-ring modulator when the voltage value of the regulating element is the first preset voltage value; wherein, the first preset voltage value is set according to actual needs, for example, set to 0.

[0054] Then, the signal processing unit controls the voltage output unit to output an instruction to increase the preset step size to the adjustment element, so that the voltage value of the adjustment element increases by the preset step size (the preset step size is set according to actual needs) on the current basis. Then, it receives the first monitoring value V12 from TIA1 and the second monitoring value V22 from TIA2, thereby recording the first monitoring value V12 corresponding to the optical signal intensity at the input end of the micro-ring modulator and the second monitoring value V22 corresponding to the optical signal intensity at the output end of the micro-ring modulator when the voltage value of the adjustment element is the new voltage value.

[0055] This process continues until the voltage of the regulating element is recorded as the second preset voltage value, at which point the first monitored value V1 corresponding to the optical signal intensity at the input of the micro-ring modulator is determined. n And the second monitoring value V2 corresponding to the optical signal intensity at the output of the micro-ring modulator. n .

[0056] Step S20: Determine whether there is distortion in the resonant filter spectrum of the micro-ring modulator based on the recorded information;

[0057] In this embodiment, refer to Figure 3 , Figure 3 This is a schematic diagram of the resonant filter spectrum of a micro-ring modulator in one embodiment. For example... Figure 3 The image shows the resonant filter spectrum (i.e., filter spectrum) of a microring modulator under different incident light powers. Due to two-photon absorption, the resonant filter spectrum is distorted under high incident light powers, manifested as a shift in the resonant wavelength of the microring towards longer wavelengths, and a change in the shape of the resonant filter spectrum from a symmetrical distribution to an asymmetrical distribution. For ease of description, this paper divides the resonant filter spectrum into a decreasing side (where the light power gradually decreases with increasing wavelength) and a increasing side (where the light power gradually increases with increasing wavelength) on either side of the resonant wavelength point. As the incident light power increases, the resonant wavelength shifts towards longer wavelengths, the decreasing side becomes increasingly flat, and the increasing side becomes increasingly steep. Due to differences in the design parameters and fabrication processes of the microring modulator, the sensitivity of the resonant filter spectrum to changes in incident light power intensity varies for different microring modulators. Therefore, in industrial applications, when locking the operating wavelength of the microring modulator, the influence of incident light intensity on the microring needs to be considered in the wavelength locking control circuit.

[0058] Reference Figure 4 , Figure 4 This is a schematic diagram of the resonant filter spectrum of the micro-ring modulator when the incident light power is relatively low in one embodiment. Figure 4 As shown, when the incident light power is low, there is no two-photon absorption effect within the micro-ring, and the resonant filter spectrum is symmetrical, meaning there is no distortion. In this case, the micro-ring modulator can have two ideal operating points, located on the falling side and the rising side, respectively. By adjusting the resonant wavelength of the micro-ring modulator, the wavelength of the incident light signal can be made to be in a position such as... Figure 4 Either of the two micro-ring modulators shown is at its ideal operating point.

[0059] Reference Figure 5 , Figure 5 This is a schematic diagram of the resonant filter spectrum of the micro-ring modulator when the incident light power is relatively high in one embodiment. Figure 5As shown, when the incident light signal power is high, two-photon absorption occurs within the micro-ring, and the resonant filter spectrum exhibits an asymmetric distribution, i.e., distortion. In this case, the ideal operating point can only be set on the descending side of the resonant filter spectrum because the ascending side of the spectrum becomes steep, increasing the precision required for the micro-ring modulator's operating voltage control, which is detrimental to the stable operation of the device.

[0060] Based on the recorded information, it can be determined whether the resonant filter spectrum exhibits an asymmetric or symmetric distribution, thereby determining whether there is distortion in the resonant filter spectrum of the micro-ring modulator.

[0061] Further, in one embodiment, step S20 includes:

[0062] Determine the voltage value Vf corresponding to the minimum second monitoring value, and the two voltage values ​​Va and Vb corresponding to the two second monitoring values ​​whose differences from their respective first monitoring values ​​are equal; calculate the absolute value V1 of the difference between Vf and Va, and calculate the absolute value V2 of the difference between Vf and Vb; detect whether the absolute value of the difference between V1 and V2 is less than or equal to a preset threshold; if the absolute value of the difference between V1 and V2 is less than or equal to the preset threshold, it is determined that the resonant filter spectrum of the micro-ring modulator has no distortion; if the absolute value of the difference between V1 and V2 is greater than the preset threshold, it is determined that the resonant filter spectrum of the micro-ring modulator has distortion.

[0063] In this embodiment, refer to Figure 6 , Figure 6 This is a diagram showing the correspondence between voltage values ​​and monitored values ​​in one embodiment of the voltage setting method of the present invention. For example... Figure 6 As shown, based on the recorded information, the following can be obtained: Figure 6 The diagram shows that the micro-ring wavelength control voltage is the voltage value of the regulating element. Since the first monitoring value characterizes the input light signal intensity, and the input light intensity is stable in application, even if the voltage value of the regulating element changes, the first monitoring value remains almost unchanged, approximating a straight line. The second monitoring value characterizes the output light intensity after passing through the micro-ring modulator; its value is related to the resonant filter spectrum, or rather, its value is used to reflect the resonant filter spectrum, such as... Figure 6 As shown, as the voltage value of the regulating element increases, it exhibits a trend of first decreasing and then increasing.

[0064] First, determine the voltage value Vf (resonant wavelength voltage) corresponding to the minimum second monitoring value; then, determine two second monitoring values ​​whose differences from their respective first monitoring values ​​are equal, for example... Figure 6Points a and b are defined in the data. The difference between the second monitoring value and the first monitoring value corresponding to point a is denoted as c1, and the difference between the second monitoring value and the first monitoring value corresponding to point b is denoted as c2. c1 and c2 are equal. Then, based on the recorded information, the voltage value Va corresponding to point a and the voltage value Vb corresponding to point b are determined.

[0065] The absolute value V1 of the difference between Vf and Va is calculated, and the absolute value V2 of the difference between Vf and Vb is calculated. It is then checked whether the absolute value of the difference between V1 and V2 is less than or equal to a preset threshold. The preset threshold is set according to actual needs.

[0066] If the absolute value of the difference between V1 and V2 is less than or equal to the preset threshold, it indicates that points a and b are symmetrical about point Vf, and the resonant filter spectrum exhibits a symmetrical distribution. Therefore, it is determined that the resonant filter spectrum of the micro-ring modulator is free from distortion. If the absolute value of the difference between V1 and V2 is greater than the preset threshold, it indicates that points a and b are not symmetrical about point Vf, and the resonant filter spectrum exhibits an asymmetrical distribution. Therefore, it is determined that the resonant filter spectrum of the micro-ring modulator is distorted.

[0067] It should be noted that, with Figure 6 The representation of the correspondence between voltage values ​​and monitored values ​​is only for better illustration of this embodiment. In practical applications, this embodiment can be directly implemented based on the recorded data.

[0068] Furthermore, in one embodiment, the two second monitoring values ​​that are equal in difference to their respective first monitoring values ​​are both greater than the product of the third proportional coefficient and the maximum second monitoring value.

[0069] In this embodiment, as Figure 6 As shown, since there can be many pairs of second monitoring values ​​on both the descending and ascending sides that have a difference equal to their corresponding first monitoring values, one pair can be randomly selected. However, for accuracy reasons, a pair of second monitoring values ​​greater than the product of the third proportional coefficient and the maximum second monitoring value can be selected. The maximum second monitoring value is the highest value among all recorded second monitoring values. The third proportional coefficient is set according to actual needs and is not restricted here.

[0070] Step S30: Select a target second monitoring value from the recorded second monitoring values ​​according to the selection strategy corresponding to the judgment result, and set the voltage value of the adjustment element to the voltage value corresponding to the target second monitoring value.

[0071] In this embodiment, based on the judgment result of step S20, that is, when the resonant filter spectrum has distortion and when the resonant filter spectrum does not have distortion, the corresponding selection strategy is adopted to select the target second monitoring value from the recorded second monitoring value, thereby setting the voltage value of the adjustment element to the voltage value corresponding to the target second monitoring value.

[0072] Further, in one embodiment, the step of selecting the target second monitoring value from the recorded second monitoring values ​​according to the selection strategy corresponding to the judgment result includes:

[0073] When the resonant filter spectrum of the micro-ring modulator is free from distortion, any locking direction is selected. The locking direction includes a falling direction and a rising direction. The second monitoring value recorded in the falling direction is the second monitoring value corresponding to a voltage value less than Vf, and the second monitoring value recorded in the rising direction is the second monitoring value corresponding to a voltage value greater than Vf.

[0074] Select any second monitoring value within a preset range from the second monitoring values ​​recorded corresponding to the selected locking direction as the target second monitoring value. The lower limit of the preset range is the product of the first proportional coefficient and the maximum second monitoring value, and the upper limit of the preset range is the product of the second proportional coefficient and the maximum second monitoring value. The second proportional coefficient is greater than the first proportional coefficient.

[0075] In this embodiment, when the resonant filter spectrum of the micro-ring modulator is free from distortion, either the descending or ascending direction can be selected as the locking direction; then, any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the selected locking direction as the target second monitoring value. The target second monitoring value is... Figure 6 MPD2_work in the middle.

[0076] The first and second proportional coefficients are set according to actual needs and are not restricted here.

[0077] Further, in one embodiment, the step of selecting the target second monitoring value from the recorded second monitoring values ​​according to the selection strategy corresponding to the judgment result includes:

[0078] When the resonant filter spectrum of the micro-ring modulator is distorted, determine the maximum value of V1 and V2;

[0079] When the voltage value corresponding to the maximum value is less than Vf, the locking direction is determined to be the downward direction. Any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the downward direction as the target second monitoring value. The recorded second monitoring value corresponding to the downward direction is the second monitoring value corresponding to the voltage value less than Vf.

[0080] When the voltage value corresponding to the maximum value is greater than Vf, the locking direction is determined to be the upward direction. Any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the upward direction as the target second monitoring value. The recorded second monitoring value corresponding to the upward direction is the second monitoring value corresponding to the voltage value greater than Vf.

[0081] In this embodiment, when the resonant filter spectrum of the micro-ring modulator is distorted, the maximum value of V1 and V2 is first determined; then, the locking direction is determined based on the relationship between the maximum value and Vf; finally, any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the determined locking direction as the target second monitoring value. The target second monitoring value is... Figure 6 MPD2_work in the middle.

[0082] In this embodiment, starting from a first preset voltage value, the voltage value of the adjusting element is gradually increased according to a preset step size until the voltage value of the adjusting element reaches a second preset voltage value. At each voltage value, the first monitoring value corresponding to the optical signal intensity at the input of the micro-ring modulator and the second monitoring value corresponding to the optical signal intensity at the output of the micro-ring modulator are recorded. The second monitoring value changes with the voltage value of the adjusting element. Based on the recorded information, it is determined whether there is distortion in the resonant filter spectrum of the micro-ring modulator. According to the selection strategy corresponding to the determination result, a target second monitoring value is selected from the recorded second monitoring values, and the voltage value of the adjusting element is set to the voltage value corresponding to the target second monitoring value. Through this embodiment, since the second monitoring value corresponds to the optical signal intensity at the output of the micro-ring modulator, and its value is related to the filter spectrum of the micro-ring modulator, or in other words, its value is used to reflect the micro-ring filter spectrum, setting the voltage value of the adjusting element to the voltage value corresponding to the target second monitoring value ensures that the wavelength of the incident light signal is at a specific position in the filter spectrum of the micro-ring modulator.

[0083] Furthermore, in one embodiment, after step S30, the method further includes:

[0084] When the second monitoring value is detected to be outside the preset range, the voltage adjustment direction is determined according to the locking direction; the voltage value of the adjustment element is adjusted based on the voltage adjustment direction until the second monitoring value is the target second monitoring value.

[0085] In this embodiment, the second monitoring value exceeding the preset range includes two situations:

[0086] Scenario 1: The second monitoring value exceeds the lower limit of the preset range.

[0087] If the locked direction is downward, then the voltage adjustment direction is determined to be decreasing. The voltage value of the adjusting element is gradually decreased at certain intervals until the second monitoring value is the target second monitoring value, at which point the adjustment of the voltage value of the adjusting element is stopped.

[0088] If the locked direction is upward, then the voltage adjustment direction is determined to be increasing. The voltage value of the regulating element is gradually increased at certain intervals until the second monitoring value is the target second monitoring value, at which point the voltage value of the regulating element is stopped.

[0089] Scenario 2: The second monitoring value exceeds the upper limit of the preset range.

[0090] If the locked direction is downward, then the voltage adjustment direction is determined to be increasing. The voltage value of the regulating element is gradually increased at certain intervals until the second monitoring value is the target second monitoring value, at which point the voltage value of the regulating element is stopped.

[0091] If the locked direction is upward, then the voltage adjustment direction is determined to be downward. The voltage value of the regulating element is gradually reduced at certain intervals until the second monitoring value is the target second monitoring value, at which point the adjustment of the voltage value of the regulating element is stopped.

[0092] This embodiment further ensures that the wavelength of the incident light signal is at a specific position in the filter spectrum of the micro-ring modulator.

[0093] Furthermore, in one embodiment, after step S30, the method further includes:

[0094] When a change is detected in the first monitoring value corresponding to the optical signal intensity at the input of the micro-ring modulator, and the change amplitude is greater than the preset amplitude, return to step S10.

[0095] In this embodiment, when a change is detected in the first monitoring value corresponding to the light signal intensity at the input end of the micro-ring modulator, and the change amplitude is greater than the preset amplitude, the process returns to step S10, that is, steps S10 to S30 are re-executed to determine a new target second monitoring value, and the voltage value of the adjustment element is set to the voltage value corresponding to the new target second monitoring value.

[0096] Secondly, embodiments of the present invention also provide a voltage setting device.

[0097] In one embodiment, reference is made to Figure 7 , Figure 7 This is a functional module diagram of an embodiment of the voltage setting device of the present invention. Figure 7 As shown, the voltage setting device includes:

[0098] The recording module 10 is used to gradually increase the voltage value of the regulating element from a first preset voltage value according to a preset step size until the voltage value of the regulating element reaches a second preset voltage value, and record the first monitoring value corresponding to the optical signal intensity at the input end of the micro-ring modulator and the second monitoring value corresponding to the optical signal intensity at the output end of the micro-ring modulator at each voltage value, wherein the second monitoring value changes with the voltage value of the regulating element.

[0099] The judgment module 20 is used to determine whether there is distortion in the resonant filter spectrum of the micro-ring modulator based on the recorded information;

[0100] The setting module 30 is used to select a target second monitoring value from the recorded second monitoring values ​​according to the selection strategy corresponding to the judgment result, and set the voltage value of the adjustment element to the voltage value corresponding to the target second monitoring value.

[0101] Furthermore, in one embodiment, the determination module 20 is used to:

[0102] Determine the voltage value Vf corresponding to the minimum second monitoring value, and the two voltage values ​​Va and Vb corresponding to the two second monitoring values ​​that have the same difference from their respective first monitoring values;

[0103] Calculate the absolute value of the difference between Vf and Va, V1; calculate the absolute value of the difference between Vf and Vb, V2.

[0104] Detect whether the absolute value of the difference between V1 and V2 is less than or equal to a preset threshold;

[0105] If the absolute value of the difference between V1 and V2 is less than or equal to the preset threshold, then it is determined that there is no distortion in the resonant filter spectrum of the micro-ring modulator.

[0106] If the absolute value of the difference between V1 and V2 is greater than the preset threshold, then it is determined that the resonant filter spectrum of the micro-ring modulator is distorted.

[0107] Furthermore, in one embodiment, the two second monitoring values ​​that are equal in difference to their respective first monitoring values ​​are both greater than the product of the third proportional coefficient and the maximum second monitoring value.

[0108] Furthermore, in one embodiment, the setting module 30 is used for:

[0109] When the resonant filter spectrum of the micro-ring modulator is free from distortion, any locking direction is selected. The locking direction includes a falling direction and a rising direction. The second monitoring value recorded in the falling direction is the second monitoring value corresponding to a voltage value less than Vf, and the second monitoring value recorded in the rising direction is the second monitoring value corresponding to a voltage value greater than Vf.

[0110] Select any second monitoring value within a preset range from the second monitoring values ​​recorded corresponding to the selected locking direction as the target second monitoring value. The lower limit of the preset range is the product of the first proportional coefficient and the maximum second monitoring value, and the upper limit of the preset range is the product of the second proportional coefficient and the maximum second monitoring value. The second proportional coefficient is greater than the first proportional coefficient.

[0111] Furthermore, in one embodiment, the setting module 30 is used for:

[0112] When the resonant filter spectrum of the micro-ring modulator is distorted, determine the maximum value of V1 and V2;

[0113] When the voltage value corresponding to the maximum value is less than Vf, the locking direction is determined to be the downward direction. Any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the downward direction as the target second monitoring value. The recorded second monitoring value corresponding to the downward direction is the second monitoring value corresponding to the voltage value less than Vf.

[0114] When the voltage value corresponding to the maximum value is greater than Vf, the locking direction is determined to be the upward direction. Any second monitoring value within a preset range is selected from the recorded second monitoring values ​​corresponding to the upward direction as the target second monitoring value. The recorded second monitoring value corresponding to the upward direction is the second monitoring value corresponding to the voltage value greater than Vf.

[0115] Furthermore, in one embodiment, the voltage setting device further includes an adjustment module for:

[0116] When the second monitoring value is detected to be outside the preset range, the voltage adjustment direction is determined according to the locking direction.

[0117] The voltage value of the regulating element is adjusted based on the voltage value adjustment direction until the second monitoring value is the target second monitoring value.

[0118] Furthermore, in one embodiment, the voltage setting device further includes a circulation module for:

[0119] When a change is detected in the first monitoring value corresponding to the optical signal intensity at the input of the micro-ring modulator, and the change is greater than a preset range, the recording module is notified to perform the corresponding action.

[0120] The functions of each module in the voltage setting device correspond to the steps in the voltage setting method embodiment, and their functions and implementation processes will not be described in detail here.

[0121] Thirdly, embodiments of the present invention provide a voltage setting device, which can be a device with data processing capabilities such as a personal computer (PC), a laptop computer, or a server.

[0122] Reference Figure 8 , Figure 8This is a schematic diagram of the hardware structure of the voltage setting device involved in an embodiment of the present invention. In this embodiment, the voltage setting device may include a processor 1001 (e.g., a Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize communication between these components; the user interface 1003 may include a display screen or an input unit such as a keyboard; the network interface 1004 may optionally include a standard wired interface or a wireless interface (e.g., Wireless Fidelity, Wi-Fi); the memory 1005 may be high-speed random access memory (RAM) or stable memory (non-volatile memory), such as a disk storage device. Alternatively, the memory 1005 may also be a storage device independent of the aforementioned processor 1001. Those skilled in the art will understand that… Figure 8 The hardware structure shown does not constitute a limitation of the invention and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0123] Continue to refer to Figure 8 , Figure 8 The memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a voltage setting program. The processor 1001 can call the voltage setting program stored in the memory 1005 and execute the voltage setting method provided in this embodiment of the invention.

[0124] Fourthly, embodiments of the present invention also provide a readable storage medium.

[0125] The present invention provides a voltage setting program stored on a readable storage medium, wherein when the voltage setting program is executed by a processor, it implements the steps of the voltage setting method described above.

[0126] The method implemented when the voltage setting procedure is executed can be referred to in various embodiments of the voltage setting method of the present invention, and will not be repeated here.

[0127] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0128] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0129] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of the present invention.

[0130] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A voltage setting method, characterized by, The voltage setting method comprises: starting from a first preset voltage value, gradually increasing the voltage value of the adjusting element according to a preset step size until the voltage value of the adjusting element reaches a second preset voltage value, and recording a first monitoring value corresponding to the light signal intensity at the input end of the micro-ring modulator and a second monitoring value corresponding to the light signal intensity at the output end of the micro-ring modulator at each voltage value, wherein the second monitoring value changes with the voltage value of the adjusting element; judging whether the resonant filter spectrum of the micro-ring modulator is distorted based on the recorded information; selecting a target second monitoring value from the recorded second monitoring values according to a selection strategy corresponding to the judgment result, and setting the voltage value of the adjusting element as a voltage value corresponding to the target second monitoring value; the step of judging whether the resonant filter spectrum of the micro-ring modulator is distorted based on the recorded information comprises: determining a voltage value corresponding to the minimum second monitoring value Vf and two voltage values corresponding to two second monitoring values equal to the difference of the respective first monitoring values Va and Vb ; The absolute value V1 of the difference between Vf and Va is calculated Vf The absolute value V2 of the difference between Vb and detecting whether the absolute value of the difference between V1 and V2 is less than or equal to a preset threshold value; if the absolute value of the difference between V1 and V2 is less than or equal to the preset threshold value, it is determined that the resonant filter spectrum of the micro-ring modulator is not distorted; if the absolute value of the difference between V1 and V2 is greater than the preset threshold value, it is determined that the resonant filter spectrum of the micro-ring modulator is distorted.

2. The voltage setting method of claim 1, wherein, The two second monitoring values equal to the difference between the respective first monitoring values are both greater than the product of a third proportionality coefficient and the maximum second monitoring value.

3. The voltage setting method of claim 1, wherein, The step of selecting a target second monitoring value from the recorded second monitoring values according to a selection strategy corresponding to the judgment result comprises: When the resonant filter spectrum of the micro-ring modulator has no distortion, any one of the locking directions is selected, wherein the locking directions include a falling direction and a rising direction, the recorded second monitoring value corresponding to the falling direction is less than Vf the voltage value corresponding to the second monitoring value, and the recorded second monitoring value corresponding to the rising direction is greater than Vf the voltage value corresponding to the second monitoring value. selecting any second monitoring value within a preset range from the recorded second monitoring values corresponding to the selected locking direction as the target second monitoring value, wherein the lower limit value of the preset range is the product of a first proportionality coefficient and the maximum second monitoring value, and the upper limit value of the preset range is the product of a second proportionality coefficient and the maximum second monitoring value, and the second proportionality coefficient is greater than the first proportionality coefficient.

4. The voltage setting method of claim 1, wherein, The step of selecting a target second monitoring value from the recorded second monitoring values according to a selection strategy corresponding to the judgment result comprises: when the resonant filter spectrum of the micro-ring modulator is distorted, determining the maximum value of V1 and V2; When the voltage value corresponding to the maximum value is less than Vf , the locking direction is determined as the falling direction, and any second monitoring value in a preset range is selected from the recorded second monitoring values corresponding to the falling direction as the target second monitoring value. The recorded second monitoring value corresponding to the falling direction is the second monitoring value corresponding to the voltage value less than Vf . When the voltage value corresponding to the maximum value is greater than Vf , the locking direction is determined as the rising direction, and any second monitoring value in a preset range is selected from the recorded second monitoring values corresponding to the rising direction as the target second monitoring value. The recorded second monitoring value corresponding to the rising direction is the second monitoring value corresponding to the voltage value greater than Vf .

5. The voltage setting method according to claim 3 or 4, wherein After the step of setting the voltage value of the adjusting element as the voltage value corresponding to the target second monitoring value, the method further comprises: when it is detected that the second monitoring value is out of the preset range, determining the voltage value adjustment direction according to the locking direction; adjusting the voltage value of the adjusting element based on the voltage value adjustment direction until the second monitoring value is the target second monitoring value.

6. The voltage setting method of claim 1, wherein, After the step of setting the voltage value of the adjusting element as the voltage value corresponding to the target second monitoring value, the method further comprises: when it is detected that the first monitoring value corresponding to the light signal intensity at the input end of the micro-ring modulator changes and the change amplitude is greater than a preset amplitude, returning to the step of starting from a first preset voltage value, gradually increasing the voltage value of the adjusting element according to a preset step size until the voltage value of the adjusting element reaches a second preset voltage value, and recording a first monitoring value corresponding to the light signal intensity at the input end of the micro-ring modulator and a second monitoring value corresponding to the light signal intensity at the output end of the micro-ring modulator at each voltage value.

7. A voltage setting device, characterized by The voltage setting device comprises: The recording module is configured to start from a first preset voltage value, gradually increase the voltage value of the adjusting element according to a preset step, until the voltage value of the adjusting element reaches a second preset voltage value, and record a first monitoring value corresponding to the light signal intensity at the input end of the micro-ring modulator and a second monitoring value corresponding to the light signal intensity at the output end of the micro-ring modulator at each voltage value, wherein the second monitoring value changes with the voltage value of the adjusting element. a judging module configured to determine a voltage value corresponding to the minimum second monitoring value Vf , and two voltage values corresponding to two second monitoring values equal to the difference of the respective first monitoring values Va , and Vb ; calculate an absolute value V1 of the difference between Vf and Va ; calculate an absolute value V2 of the difference between Vf and Vb ; detect whether the absolute value of the difference between V1 and V2 is less than or equal to a preset threshold value; if the absolute value of the difference between V1 and V2 is less than or equal to the preset threshold value, it is determined that the resonant filter spectrum of the micro-ring modulator does not exist distortion; if the absolute value of the difference between V1 and V2 is greater than the preset threshold value, it is determined that the resonant filter spectrum of the micro-ring modulator exists distortion; The setting module is configured to select a target second monitoring value from the recorded second monitoring values according to a selection strategy corresponding to the judgment result, and set the voltage value of the adjusting element as a voltage value corresponding to the target second monitoring value.

8. A voltage setting device, characterized by The voltage setting device includes a processor, a memory, and a voltage setting program stored on the memory and executable by the processor, wherein the voltage setting program, when executed by the processor, implements the steps of the voltage setting method according to any one of claims 1 to 6.

9. A readable storage medium, characterized by, The voltage setting program is stored on the readable storage medium, and when executed by the processor, implements the steps of the voltage setting method according to any one of claims 1 to 6.

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