Signal processing system, chip and signal processing method

Abstract

The invention provides a signal processing system, a chip and a signal processing method, and the system comprises a signal input unit which is used for modulating an electric signal to light based on modulation demand information, and outputting a modulated optical signal; the optical parameter adjustable processing unit is used for adjusting the modulated optical signal based on the parameter demand information and outputting the adjusted optical signal; wherein the parameter demand information is configured based on a preset parameter range; the optical parameter adjustable processing unit is designed based on the preset parameter range; and the signal output unit is used for processing the adjusted optical signal based on the use demand information and outputting a required signal. The method can adapt to different signal processing scenes, and can achieve good display of system flexibility and functionality in different scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of photoelectric signal processing, and in particular to a signal processing system, a chip and a signal processing method. Background Art

[0002] Optical signal processing provides a more efficient and high-speed solution for modern scenarios ranging from digital optical communications to analog microwave manipulation. Compared with electrical signal processing systems, photonic processing systems break through the bandwidth limitations of conventional processing circuits, and with the development of integrated optoelectronics, they are highly scalable and flexible. Traditional integrated optoelectronic systems are usually targeted at specific tasks (Application-Specific Photonic Integrated Circuits, ASPIC), which can effectively reduce the size, weight, power consumption and cost of information processing systems, but lack the ability to process in a variety of application scenarios. Another solution is to use the analogy of a field-programmable gate array (FPGA), based on a Mach-Zehnder interferometer array connected according to a specific topology, each interferometer unit has three states: direct, cross and adjustable, to realize a field programmable photonic gate array (Field Programmable Photonic Gate Arrays), but the functions that this solution can achieve are relatively basic, and currently only monolithic integration of passive networks has been achieved, and there is still a gap in achieving system-level functions across application scenarios. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a signal processing system, a chip and a signal processing method.

[0004] The present invention provides a signal processing system, comprising: A signal input unit, used to modulate the input electrical signal onto light based on the modulation requirement information, and output the modulated optical signal; An optical parameter adjustable processing unit, used to adjust the modulated optical signal based on parameter requirement information and output the adjusted optical signal; wherein the parameter requirement information is configured based on a preset parameter range; and the optical parameter adjustable processing unit is designed based on the preset parameter range; The signal output unit is used to process the adjusted optical signal based on the usage demand information and output the required signal.

[0005] According to a signal processing system provided by the present invention, the optical parameter adjustable processing unit includes a plurality of adjustment subunits, the plurality of adjustment subunits are sequentially arranged and connected according to the sequence number, each adjustment subunit includes a micro-ring resonant cavity and two first coupling structures, and the micro-ring resonant cavity is respectively connected to the two first coupling structures; One of the two first coupling structures forms a first interface group, and the other first coupling structure forms a second interface group; The first interface groups of two adjacent regulating subunits are connected by a first type of waveguide wire, and the second interface groups are connected by a second type of waveguide wire; The first interface group and the second interface group are both composed of an input terminal and an output terminal; The input end of the first interface group or the input end of the second interface group of the regulating subunit with the earliest serial number is connected to the output end of the signal input unit; correspondingly, the output end of the first interface group or the output end of the second interface group of the regulating subunit with the earliest serial number is connected to the input end of the signal output unit.

[0006] According to a signal processing system provided by the present invention, the regulating subunit includes an Input terminal, a Through terminal, an Add terminal and a Drop terminal, and accordingly, the Input terminal and the Through terminal constitute the input terminal and the output terminal of the first interface group of the regulating subunit, and the Add terminal and the Drop terminal constitute the input terminal and the output terminal of the second interface group of the regulating subunit; The Through end and the Input end of two adjacent regulating subunits are connected through a short wave conductor, and the Add end and the Drop end of two adjacent regulating subunits are connected through a waveguide delay line; The Input end of the regulating subunit with the most preceding sequence number is connected to the output end of the signal input unit; the Drop end of the regulating subunit with the most preceding sequence number is connected to the input end of the signal output unit.

[0007] According to a signal processing system provided by the present invention, the signal input unit includes a second coupling structure and an electro-optical modulator, and accordingly, the second coupling structure is used to couple the chip external optical signal into the chip optical waveguide to output the optical signal; The electro-optical modulator is used to modulate the input electrical signal onto the coupled optical signal based on the modulation requirement information, and output the modulated optical signal.

[0008] According to a signal processing system provided by the present invention, the signal output unit includes a photodetector and a third coupling structure. Accordingly, if the demand information is used to characterize the demand electrical signal, the photodetector is used to convert the adjusted optical signal into an electrical signal and output it; if the demand information is used to characterize the demand optical signal, the third coupling structure is used to complete the coupling of the adjusted optical signal and output the optical signal.

[0009] According to a signal processing system provided by the present invention, the signal processing system further includes a phase adjustment structure, and the phase adjustment structure is placed above the microring resonant cavity or is a part of the microring resonant cavity.

[0010] The present invention also provides a chip, comprising the above-mentioned signal processing system.

[0011] The present invention also provides a signal processing method, comprising: The signal input unit modulates the input electrical signal onto light based on the modulation requirement information, and outputs the modulated optical signal; The optical parameter adjustable processing unit is configured to adjust the modulated optical signal based on the parameter requirement information and output the adjusted optical signal; wherein the parameter requirement information is configured based on a preset parameter range; and the optical parameter adjustable processing unit is designed based on the preset parameter range; The signal output unit processes the adjusted optical signal based on the usage requirement information and outputs a required signal.

[0012] The present invention provides a signal processing system, chip and signal processing method, which modulate an electrical signal onto light based on modulation requirement information through a signal input unit, and adjust the modulated optical signal based on parameter requirement information within a preset parameter range through an optical parameter adjustable processing unit, and output the adjusted optical signal, which can adapt to different signal processing scenarios and can achieve good display of system flexibility and functionality in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the signal processing system provided by the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the regulatory subunit provided by the present invention.

[0016] Figure 3 It is a schematic diagram of the structure of each Add-Drop micro-ring connection provided by the present invention.

[0017] Figure 4 It is a signal connection relationship diagram between the Add-Drop micro-ring and various waveguide lines provided by the present invention.

[0018] Figure 5 It is a specific structural diagram of the signal processing system provided by the present invention.

[0019] Figure 6a It is a schematic diagram of the structure of the reconfigurable microwave photon filter system provided by the present invention.

[0020] Figure 6b This is a relationship diagram between the laser wavelength and the laser power provided by the present invention.

[0021] Figure 6c The relationship between time and microwave power provided by the present invention is Figure 1 .

[0022] Figure 6d The relationship between time and microwave power provided by the present invention is Figure 2 .

[0023] Figure 6e It is a relationship diagram between microwave frequency and transmission function provided by the present invention.

[0024] Figure 7a It is a structural schematic diagram of the optical domain convolution calculation system provided by the present invention.

[0025] Figure 7b This is a relationship diagram between the laser wavelength and the laser power provided by the present invention.

[0026] Figure 7c It is a relationship diagram between time and loading information provided by the present invention.

[0027] Figure 7d It is a relationship diagram between each micro-ring and the convolution weight provided by the present invention.

[0028] Figure 7e It is a relationship diagram between time and weighted information provided by the present invention.

[0029] Figure 8a It is a structural schematic diagram of the optical domain channel equalization system provided by the present invention.

[0030] Figure 8b It is a relationship diagram between the frequency and the loaded information spectrum provided by the present invention.

[0031] Figure 8c It is a relationship diagram between frequency and modulation spectrum provided by the present invention.

[0032] Figure 8d It is a relationship diagram between frequency and micro-ring delay line response provided by the present invention.

[0033] Figure 8e It is a relationship diagram between the frequency provided by the present invention and the received information spectrum.

[0034] Fig. 9 It is a flowchart of the signal processing method provided by the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Combine the following Figure 1-Figure 9 The signal processing system, chip and signal processing method of the present invention are described.

[0037] Figure 1 A schematic diagram of the structure of a signal processing system provided by the present invention is shown in FIG. Figure 1 The system comprises a signal input unit 11, an optical parameter adjustable processing unit 12 and a signal output unit 13, wherein: The signal input unit 11 is used to modulate the input electrical signal onto light based on the modulation requirement information, and output the modulated optical signal; The optical parameter adjustable processing unit 12 is used to adjust the modulated optical signal based on the parameter requirement information and output the adjusted optical signal; wherein the parameter requirement information is configured based on a preset parameter range; and the optical parameter adjustable processing unit is designed based on the preset parameter range; The signal output unit 13 is used to process the adjusted optical signal based on the usage requirement information and output the required signal.

[0038] It should be noted that the signal processing system is an on-chip system, which mainly processes electrical signals to obtain the required electrical signals or optical signals, and the obtained electrical signals or optical signals are used for subsequent further processing. For the processing of electrical signals or optical signals, in order to reflect the effective use and control of electrical signals and optical signals, it is necessary to process the signals from multiple dimensions suitable for different processing scenarios, and the multiple dimensions include the amplitude, phase, delay, frequency, intensity, etc. of the optical signal, but are not limited to this.

[0039] In order to adapt to different signal processing scenarios, the system of the present invention can achieve system flexibility and functionality in different scenarios, mainly from the modulation of loading electrical signals to optical signals and the flexible adjustment of optical signals. To this end, the present invention is configured with a signal input unit, which can load the electrical signal on the chip so that it can modulate the electrical signal into an optical signal that is qualified for subsequent processing. To this end, the signal input unit needs to modulate the electrical signal based on the pre-configured modulation requirement information to load it into a suitable optical signal.

[0040] Furthermore, the present invention is also configured with an optical parameter adjustable processing unit, where the optical parameter adjustable unit is capable of adjusting the parameters of light in different dimensions, and the adjustment range is a preconfigured parameter range. Accordingly, the configuration of the optical parameter adjustable processing unit also needs to be reasonably designed based on the preset parameter range. For example, the optical parameter adjustable processing unit includes multiple devices, each of which can adapt to the adjustment of a smaller parameter range. Then, when configuring a larger parameter range, it is necessary to design the number of required devices based on this larger parameter range, so as to design and configure the optical parameter adjustment processing unit.

[0041] To this end, the optical parameter adjustable processing unit of the present invention can adjust the parameters to any value within a preset parameter range to meet the signal processing scenario.

[0042] The present invention is also configured with a signal output unit, which outputs an electrical signal or an optical signal to an external signal receiving device. The signal output unit is used to process the adjusted optical signal based on the usage requirement information and output the required signal. The usage requirement information here includes the type of output signal (such as an electrical signal or an optical signal), and may also include other requirement information, such as parameters of the required dimension of the signal. For different usage requirement information, the signal output unit can adapt the optical signal adjusted by the optical parameter adjustable processing unit to obtain the required signal and output it.

[0043] The signal processing system provided by the present invention modulates an electrical signal onto light based on modulation requirement information through a signal input unit, completes loading the electrical signal to obtain an optical signal, and adjusts the modulated optical signal based on parameter requirement information within a preset parameter range through an optical parameter adjustable processing unit, and outputs the adjusted optical signal. The system can adapt to different signal processing scenarios and can achieve good display of system flexibility and functionality in different scenarios.

[0044] In a further system of the above signal processing system, the optical parameter adjustable processing unit includes a plurality of adjusting subunits, and the plurality of adjusting subunits are connected in sequence according to the serial number. That is to say, if n adjusting subunits are included, the first adjusting subunit is connected to the second adjusting subunit, the second adjusting subunit is connected to the third adjusting subunit, ..., the i-th adjusting subunit is connected to the i+1-th adjusting subunit, ..., the n-1-th adjusting subunit is connected to the n-th adjusting subunit.

[0045] It should be noted that each regulating subunit includes a micro-ring resonant cavity and two first coupling structures, and the micro-ring resonant cavity is connected to the two first coupling structures respectively. Figure 2 The schematic diagram of the structure of the regulatory subunit is shown. Figure 2 The regulating subunit is composed of a micro-ring resonant cavity and two upper and lower coupling structures (such as coupling structure C1 and coupling structure C2. In order to distinguish them from the structures in other figures later, the coupling structures C1 and C2 here are both referred to as the first coupling structure). The regulating subunit has four ports, namely Input, Through, Add and Drop, which can be the input, through, upload and download ports respectively. Based on this, the regulating subunit can also be called an Add-Drop micro-ring structure.

[0046] As a basic unit on a chip, the microring resonator can connect the optical waveguides end to end to form a closed loop, so that light propagates periodically in the closed loop, thus forming a microring resonator. In addition to the cavity, in order to achieve the coupling between the microcavity and the external light field, a coupling waveguide is placed near the cavity to couple with the light field in the cavity through evanescent wave coupling.

[0047] The Add-Drop micro-ring structure writes the internal transmission matrix of the micro-ring, and the power transfer function and phase transfer function of the Through end and the Drop end can be connected as follows:

[0048] in, ( )and ( ) are the through coefficient and coupling coefficient of the coupling structure C1 (C2) respectively; is the one-way phase change of the microring resonator, is the length of the microring, is the propagation constant of the microring waveguide; is the one-way amplitude transmission coefficient, which can be expressed as , is the loss coefficient of the microring waveguide. From the transmission function of the Add-Drop type microring, it can be seen that it can regulate the intensity and phase of the input light and has a specific form of frequency (wavelength) response, so that it can also achieve optical filtering, adjustable group delay and other functions. The microring resonator can change the one-way phase change of the resonator in a specific way. , which can achieve the change of resonant wavelength or adjust the transmission characteristics of a specific wavelength. Specific adjustment methods include placing a thermal resistor on it and applying current to change the temperature, doping it and applying voltage to change the refractive index, etc.

[0049] Continue to see Figure 2 From the perspective of the Add-Drop type micro-ring, one of the two first coupling structures (coupling structures C1 and C2) forms a first interface group, and the other first coupling structure forms a second interface group. The first interface group and the second interface group are both composed of an input end and an output end. Figure 2 It can be seen that the Input terminal and the Through terminal constitute the input terminal and the output terminal of the first interface group of the regulating subunit, and the Add terminal and the Drop terminal constitute the input terminal and the output terminal of the second interface group of the regulating subunit.

[0050] In the present invention, in order to connect multiple regulating subunits, different types of waveguides are required to establish connections. Therefore, the first interface groups of two adjacent regulating subunits are connected by a first type of waveguide, and the second interface groups are connected by a second type of waveguide.

[0051] Since multiple adjustment subunits are combined and connected together, an optical parameter adjustable processing unit is formed. That is to say, the input end and output end of the optical parameter adjustable processing unit need to be represented by the input end and output end of the adjustment subunit with the earliest sequence number. Therefore, the input end of the first interface group or the input end of the second interface end of the adjustment subunit with the earliest sequence number is connected to the output end of the signal input unit; correspondingly, the output end of the first interface group or the output end of the second interface group of the adjustment subunit with the earliest sequence number is connected to the input end of the signal output unit.

[0052] See also Figure 3 A schematic diagram of the structure of each Add-Drop micro-ring connection is shown. Figure 3 The coupling structure C1-C 2N Both serve as the first coupling structure. Figure 3 D1-D at the top N-1 The waveguide line is one type of waveguide line, which can be a waveguide delay line, and the straight line below is another type of waveguide line, which can be a short waveguide line.

[0053] That is, the Through end and the Input end of two adjacent regulating subunits are connected through a short wave conductor, and the Add end and the Drop end of two adjacent regulating subunits are connected through a waveguide delay line; The Input end of the regulating subunit with the most preceding sequence number is connected to the output end of the signal input unit; and the Drop end of the regulating subunit with the most preceding sequence number is connected to the input end of the signal output unit.

[0054] The function of the waveguide delay line is to generate on-chip true delay. A larger delay requires a longer waveguide, which will introduce higher losses. The use of a wide waveguide can reduce the waveguide loss per unit length caused by the roughness of the sidewall, thereby minimizing the loss of the waveguide delay line. The power transfer function and phase transfer function of the waveguide delay line are:

[0055] in and are the loss coefficient and propagation constant of the delay line waveguide respectively, and the corresponding delay is , is the group refractive index of the delay line waveguide, is the speed of light in a vacuum.

[0056] See also Figure 4 The figure shows the signal connection relationship between Add-Drop micro-ring and various waveguides. Figure 4 , the specific connection relationship is as follows:

[0057] See also Figure 5 This is a schematic diagram of the specific structure of the signal processing system, see Figure 5 The signal input unit includes a second coupling structure and an electro-optical modulator. Accordingly, the second coupling structure is used to couple the chip external optical signal into the chip optical waveguide and output the optical signal; the electro-optical modulator is used to modulate the input electrical signal onto the coupled optical signal based on the modulation requirement information and output the modulated optical signal.

[0058] The signal output unit includes a photodetector and a third coupling structure. Accordingly, if the demand information is used to characterize the demand electrical signal, the photodetector is used to convert the adjusted optical signal into an electrical signal and output it; if the demand information is used to characterize the demand optical signal, the third coupling structure is used to complete the coupling of the adjusted optical signal and output the optical signal.

[0059] It should also be noted that the second coupling structure and the third coupling structure may adopt the same coupling structure.

[0060] In the scenario of single wavelength input, the system can be used as a coherent processor to process digital or analog signals. In analog mode, the spectral response around the target wavelength is caused by interference between different microring channels. Each adjustable microring can independently adjust the amplitude and phase response of the channel before the final interference, thereby coherently combining into the final spectral response. In digital mode, the system can be viewed as a discrete tapped delay line architecture. By adjusting the resonant state of each microring, the amplitude and phase of signals with different delay times are adjusted, and coherently superimposed and converged at the Drop end of the first microring.

[0061] In the case of multi-wavelength input, all wavelengths carry the same information after passing through the broadband Mach-Zehnder modulator. By adjusting the current applied to the microring array, the transmission characteristics of each microring can be independently changed to achieve the expected spectral transmission characteristics. , light of different wavelengths is guided to an optical path with a step-by-step delay time through the filtering effect of the microring, and finally read out at the Drop port of the first microring, realizing the re-recombination and convergence of light of different wavelengths after multi-dimensional processing. If a photoelectric detector is used for photoelectric conversion, the effect of summing the intensity of light of different wavelengths can be achieved. In this input mode, the electrical signal obtained by the photoelectric detector at the light field of the Drop port of the first microring can be expressed as:

[0062] in is the intensity of the input optical carrier, is the delay of a single waveguide delay line, and N is the number of wavelength channels used.

[0063] In addition, a phase adjustment structure is placed above the microring resonant cavity. The phase adjustment structure can change the refractive index of the material by applying current to change the temperature near the resonant cavity and adjust the resonant state of the microring. The waveguide delay line uses a spiral line with a width of 2um, and the delay is about 60ps. It should be noted that the phase adjustment structure can be a heating resistor.

[0064] Since the second coupling structure and the third coupling structure can adopt the same coupling structure, for the following Figure 6a , 7a The coupled structure of 8a is specifically shown in the figure as a "coupled structure".

[0065] See also Figure 6a The schematic diagram of the structure of a reconfigurable microwave photon filter system designed by a signal processing system is shown. Using the principle of incoherent mode microwave photon filter, the structure of the present invention can realize on-chip spectrum shaping and introduce delay, which can be regarded as a delay-tap structure. The multi-wavelength parallel laser is coupled and input to the chip, and the input microwave signal is loaded onto the lasers of each wavelength through the on-chip silicon-based Mach-Zehnder (MZ) modulator through electro-optical modulation. The MZ modulator works in the double-sideband modulation state. The microring array in the structure of the present invention corresponds to the number of wavelengths of the input laser, and each microring adjusts the amplitude strength of a single wavelength. The power attenuation of the laser is achieved by controlling the relative distance between the resonance peak position of the microring Drop port and the corresponding laser wavelength. The unused microring can move its resonance peak away from the wavelength of the input laser to avoid other influences. After the amplitude shaping is completed, the multi-wavelength laser still needs to introduce a fixed time delay difference between different wavelengths to achieve FIR filtering response, which can be introduced through the waveguide delay line between the microrings in the structure of the present invention. After the weighting and delay operations are completed, the multi-wavelength laser enters the high-speed photodetector for demodulation to achieve the synthesis of the FIR filtering frequency response. By adjusting the power weight and FSR of the multi-wavelength laser, the adjustment of the filter response passband width and center wavelength can be achieved. See Figure 6b~6e It is a diagram of signal changes during the signal processing process of the reconfigurable microwave photonic filter system.

[0066] See also Figure 7a An optical domain convolution calculation system designed using a signal processing system is shown. The result of the convolution operation is obtained by sampling at a specific moment using the principle of wavelength-time domain stretching. Multi-wavelength parallel laser coupling is input to the chip, and the matrix or sequence analog information to be convolved is loaded onto the lasers of each wavelength through double-sideband intensity modulation of the on-chip silicon-based MZ modulator. The duration of a single symbol is the same as the delay of the delay line. The micro-ring array corresponds to the number of wavelengths of the input laser, and the transmittance of the micro-ring Drop end at the corresponding input laser wavelength can be used as a convolution kernel to weight the laser in the range of 0 to 1. The weighted wavelength channels pass through different numbers of delay lines to achieve the effect of time domain stretching. Finally, the multi-wavelength light is detected by a photodetector to achieve intensity summation. Since the delay of the delay line is the same as the duration of the information symbol, the information sampled within a specific time period is the result of the convolution. See Figure 7b~7e It is a diagram of signal changes during the signal processing process of the optical domain convolution calculation system.

[0067] See also Figure 8aAn optical domain channel equalization system designed using a signal processing system is shown. The rich and adjustable coherent frequency domain response of the cascaded-microring delay line is utilized to improve the bandwidth of the silicon-based modulator and the quality of the digital communication signal on the modulation. A single-wavelength laser is input to the on-chip silicon-based modulator through a coupling structure and loaded with a high-speed digital communication signal. Due to the bandwidth limitation of the modulator, the high-frequency part of the digital signal spectrum has a greater attenuation than the low-frequency part, and the flatness of the signal spectrum deteriorates. By adjusting the resonant state of the microring array, the coherent frequency domain response of the cascaded microring-delay line at the carrier wavelength can be changed. Specifically, the amplitude of the low-frequency signal can be appropriately lowered to increase the flatness of the spectrum, thereby improving the communication quality under the same power or signal-to-noise ratio, which can be specifically reflected in the improvement of the modulator bandwidth and the improvement of the communication signal eye diagram quality. See Figure 8b~8e It is a diagram of signal changes during the signal processing process of the optical domain channel equalization system.

[0068] In addition, the present invention also provides a chip, comprising the above-mentioned signal processing system.

[0069] The signal processing method provided by the present invention is described below. The signal processing method described below and the signal processing system described above can be referenced to each other.

[0070] Fig. 9 A schematic diagram of a signal processing method provided by the present invention is shown in FIG. Fig. 9 , the method comprises the following steps: Step 91: Enable the signal input unit to modulate the input electrical signal onto light based on the modulation requirement information, and output the modulated optical signal; Step 92: Enable the optical parameter adjustable processing unit to adjust the modulated optical signal based on the parameter requirement information, and output the adjusted optical signal; wherein the parameter requirement information is configured based on a preset parameter range; and the optical parameter adjustable processing unit is designed based on the preset parameter range; Step 93: Enable the signal output unit to process the adjusted optical signal based on the usage requirement information and output the required signal.

[0071] The signal processing method provided by the present invention modulates an electrical signal onto light based on modulation requirement information through a signal input unit, completes loading the electrical signal to obtain an optical signal, and adjusts the modulated optical signal based on parameter requirement information within a preset parameter range through an optical parameter adjustable processing unit, and outputs the adjusted optical signal. The method can adapt to different signal processing scenarios and can achieve good display of system flexibility and functionality in different scenarios.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A signal processing system, characterized in that: include: A signal input unit, used to modulate the input electrical signal onto light based on the modulation requirement information, and output the modulated optical signal; An optical parameter adjustable processing unit, used to adjust the modulated optical signal based on parameter requirement information and output the adjusted optical signal; wherein the parameter requirement information is configured based on a preset parameter range; and the optical parameter adjustable processing unit is designed based on the preset parameter range; The signal output unit is used to process the adjusted optical signal based on the usage demand information and output the required signal.

2. The signal processing system according to claim 1, characterized in that The optical parameter adjustable processing unit includes a plurality of adjustment subunits, which are sequentially arranged and connected according to the sequence number, each of which includes a micro-ring resonant cavity and two first coupling structures, and the micro-ring resonant cavity is respectively connected to the two first coupling structures; One of the two first coupling structures forms a first interface group, and the other first coupling structure forms a second interface group; The first interface groups of two adjacent regulating subunits are connected by a first type of waveguide wire, and the second interface groups are connected by a second type of waveguide wire; The first interface group and the second interface group are both composed of an input terminal and an output terminal; The input end of the first interface group or the input end of the second interface group of the regulating subunit with the earliest serial number is connected to the output end of the signal input unit; correspondingly, the output end of the first interface group or the output end of the second interface group of the regulating subunit with the earliest serial number is connected to the input end of the signal output unit.

3. The signal processing system according to claim 2, characterized in that The regulating subunit includes an Input terminal, a Through terminal, an Add terminal and a Drop terminal. Accordingly, the Input terminal and the Through terminal constitute the input terminal and the output terminal of the first interface group of the regulating subunit, and the Add terminal and the Drop terminal constitute the input terminal and the output terminal of the second interface group of the regulating subunit; The Through end and the Input end of two adjacent regulating subunits are connected through a short wave conductor, and the Add end and the Drop end of two adjacent regulating subunits are connected through a waveguide delay line; The Input end of the regulating subunit with the most preceding sequence number is connected to the output end of the signal input unit; the Drop end of the regulating subunit with the most preceding sequence number is connected to the input end of the signal output unit.

4. The signal processing system according to claim 1 or 3, characterized in that: The signal input unit includes a second coupling structure and an electro-optical modulator. Accordingly, the second coupling structure is used to couple the chip external optical signal into the chip optical waveguide to output the optical signal; The electro-optical modulator is used to modulate the input electrical signal onto the coupled optical signal based on the modulation requirement information, and output the modulated optical signal.

5. The signal processing system according to claim 4, characterized in that The signal output unit includes a photodetector and a third coupling structure. Accordingly, if the demand information is used to characterize the demand electrical signal, the photodetector is used to convert the regulated optical signal into an electrical signal and output it; If the demand information is used to characterize the demand optical signal, the third coupling structure is used to complete the coupling of the adjusted optical signal and output the optical signal.

6. The signal processing system according to claim 5, characterized in that The signal processing system further comprises a phase adjustment structure, and the phase adjustment structure is disposed above the micro-ring resonant cavity or is a part of the micro-ring resonant cavity.

7. A chip, characterized in that: A signal processing system comprising any one of claims 1 to 6.

8. A signal processing method based on the signal processing system according to any one of claims 1 to 6, characterized in that: include: The signal input unit modulates the input electrical signal onto light based on the modulation requirement information, and outputs the modulated optical signal; The optical parameter adjustable processing unit is configured to adjust the modulated optical signal based on the parameter requirement information and output the adjusted optical signal; wherein the parameter requirement information is configured based on a preset parameter range; and the optical parameter adjustable processing unit is designed based on the preset parameter range; The signal output unit processes the adjusted optical signal based on the usage requirement information and outputs a required signal.

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