Optical signal measurement method, electronic device, optical signal sensor and readable medium

Abstract

The present application discloses an optical signal measurement method, an electronic device, an optical signal sensor, and a computer-readable medium, wherein an optical signal to be measured is input into a pre-built optical signal sensor to obtain an optical signal measurement result output by the optical signal sensor; wherein the optical signal sensor includes a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors, and a signal processor; the polarization separation rotator PBRS performs polarization separation processing on the input optical signal to be measured to obtain two polarized light signals; the two spectral perturbation chips respectively perform perturbation processing on the two polarized light signals to obtain two perturbed light signals; the two photodetectors respectively detect the two perturbed light signals to obtain two electrical signals; and the signal processor outputs the optical signal measurement result according to the two electrical signals. While improving the spectral measurement effect, it also greatly saves the design cost of the spectral perturbation chip.

Description

Technical Field

[0001] The present application relates to the technical field of optical signal measurement, and in particular, to an optical signal measurement method, electronic equipment, an optical signal sensor, and a computer-readable medium. Background Art

[0002] In fiber optic sensing technology, spectroscopic optical signal sensors or tunable filter optical signal sensors are typically used to measure wavelength and amplitude changes of optical signals transmitted in optical fibers. These two optical signal sensors have many disadvantages, such as the inability to achieve real-time monitoring of optical signals, slow spectral scanning rates, slow modulation rates, and low resolution.

[0003] Currently, there is an optical signal sensor that adopts a chip-based design and takes into account the polarization sensitivity of the optical waveguide chip. It allows the optical signal to first pass through a spectral perturbation structure, which simultaneously perturbs the optical signal's two light components in different polarization states (i.e., TE polarized light and TM polarized light). Then, a polarization beam splitter cascaded after the spectral perturbation structure is used to separate the TE polarized light and TM polarized light and send them to corresponding photodetectors. The photodetectors obtain electrical signals of different polarization components and send them to the signal processor. The signal processor obtains the spectra of the different polarization components to reconstruct the spectrum of the input optical signal and realize the measurement of the input optical signal.

[0004] However, although this optical signal sensor is a significant improvement over the spectroscopic and tunable filter optical signal sensors, its actual spectral measurement effect is still poor. Therefore, a new optical signal sensor and optical signal measurement method are urgently needed. Summary of the Invention

[0005] The present application aims to solve one of the technical problems in the related art to a certain extent. To this end, the present application provides an optical signal measurement method, an electronic device, an optical signal sensor, and a computer-readable medium.

[0006] As a first aspect of the present application, a method for measuring an optical signal is provided, wherein the method comprises:

[0007] The optical signal to be measured is input into a pre-built optical signal sensor to obtain an optical signal measurement result output by the optical signal sensor; wherein the optical signal sensor includes a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor, the polarization separation rotator PBRS performs polarization state separation processing on the input optical signal to be measured to obtain two polarized light signals, the two spectral perturbation chips respectively perform perturbation processing on the two polarized light signals to obtain two perturbed light signals, the two photodetectors respectively detect the two perturbed light signals to obtain two electrical signals, and the signal processor outputs the optical signal measurement result based on the two electrical signals.

[0008] Optionally, the polarization separation rotator PBRS performs polarization state separation processing on the input optical signal to be measured to obtain two polarized light signals, including:

[0009] The polarization separation rotator PBRS separates the input optical signal to be measured according to different polarization states to obtain a separated optical signal of a first polarization state and a separated optical signal of a second polarization state, and performs polarization state conversion on the separated optical signal of the second polarization state to obtain a converted optical signal of a first polarization state; wherein the two polarized optical signals include the separated optical signal of the first polarization state and the converted optical signal of the first polarization state.

[0010] Optionally, the first polarization state includes a TE polarization state, and the second polarization state includes a TM polarization state.

[0011] Optionally, the spectrum perturbation chip includes a plurality of cascaded active tunable spectrum perturbation units and a phase modulator provided on each of the active tunable spectrum perturbation units, and the two spectrum perturbation chips respectively perform perturbation processing on the two polarized light signals to obtain two perturbed light signals, including:

[0012] Under the control of the signal processor, each phase modulator tunes the phase of the optical signal passing through its own active tunable spectrum perturbation unit, so that the last active tunable spectrum perturbation unit cascaded in the spectrum perturbation chip outputs a perturbed optical signal.

[0013] As a second aspect of the present application, an electronic device is provided, wherein the electronic device includes:

[0014] one or more processors;

[0015] A memory having one or more computer programs stored thereon, wherein when the one or more computer programs are executed by the one or more processors, the one or more processors implement the optical signal measurement method according to the first aspect of the present application.

[0016] As a second aspect of the present application, an optical signal sensor is provided, characterized in that the optical signal sensor includes a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor; the polarization separation rotator PBRS is used to perform polarization state separation processing on the input optical signal to be measured to obtain two polarized light signals; the two spectral perturbation chips are used to perform perturbation processing on the two polarized light signals respectively to obtain two perturbed light signals; the two photodetectors are used to detect the two perturbed light signals respectively to obtain two electrical signals; and the signal processor is used to output the optical signal measurement result according to the two electrical signals.

[0017] Optionally, the polarization separation rotator PBRS is used to: separate the input optical signal to be measured according to different polarization states to obtain a separated optical signal of a first polarization state and a separated optical signal of a second polarization state, and perform polarization state conversion on the separated optical signal of the second polarization state to obtain a converted optical signal of a first polarization state; wherein the two polarized optical signals include the separated optical signal of the first polarization state and the converted optical signal of the first polarization state.

[0018] Optionally, the first polarization state includes a TE polarization state, and the second polarization state includes a TM polarization state.

[0019] Optionally, the spectrum perturbation chip includes a plurality of cascaded active tunable spectrum perturbation units and a phase modulator arranged on each of the active tunable spectrum perturbation units. Each of the phase modulators is used to tune the phase of the optical signal passing through its own active tunable spectrum perturbation unit under the control of the signal processor, so that the last active tunable spectrum perturbation unit cascaded in the spectrum perturbation chip outputs a perturbed optical signal.

[0020] As a fourth aspect of the present application, a computer-readable medium is provided, on which a computer program is stored, wherein when the computer program is executed by a processor, the optical signal measurement method according to the first aspect of the present application is implemented.

[0021] The optical signal measurement method provided in the embodiment of the present application pre-constructs an optical signal sensor including a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor, inputs the optical signal to be measured into the pre-constructed optical signal sensor, and the polarization separation rotator separates the two optical signals to be measured with different polarization states, and then inputs the two polarized light signals obtained after separation into the two spectral perturbation chips respectively. In this way, the two spectral perturbation chips can independently perform perturbation processing on the polarized light signals passing through themselves, and there is no need to consider how to balance the perturbation quality of TE polarized light and the perturbation quality of TM polarized light. Subsequently, the two perturbed light signals obtained by the two spectral perturbation chips are input into the two photodetectors respectively, and the two photodetectors respectively detect the electrical signals corresponding to the two polarization state light signals after perturbation. Finally, the signal processor obtains the optical signal measurement result based on the two electrical signals, while improving the spectral measurement effect while greatly saving the design cost of the spectral perturbation chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application will be further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a flowchart of an implementation of the optical signal measurement method provided in an embodiment of the present application;

[0024] Figure 2 is a schematic diagram of an optical signal sensor provided in an embodiment of the present application;

[0025] Figure 3 This is a flow chart of another embodiment of the optical signal measurement method provided in the embodiment of the present application;

[0026] Figure 4 This is a flow chart of another embodiment of the optical signal measurement method provided in the embodiment of the present application;

[0027] Figure 5 is a schematic diagram of a spectrum perturbation chip provided in an embodiment of the present application;

[0028] Figure 6a Schematic diagram of an embodiment of the spectrum perturbation chip provided in the examples of the present application;

[0029] Figure 6b Schematic diagram of another embodiment of the spectrum perturbation chip provided in the examples of the present application;

[0030] Figure 6c Schematic diagram of another embodiment of the spectrum perturbation chip provided in the examples of the present application;

[0031] Figure 7This is a module diagram of an implementation of an electronic device provided in an embodiment of the present application;

[0032] Figure 8 It is a schematic diagram of a computer-readable medium provided in an embodiment of the present application.

[0033] Description of Reference Numerals

[0034] 101: Processor 102: Memory

[0035] 103: I / O interface 104: bus DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described in the embodiments are intended to be used to explain the present application and are not to be construed as limiting the present application.

[0037] References in this specification to "one embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment disclosed herein. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0038] In fiber optic sensing technology, spectroscopic optical signal sensors or tunable filter optical signal sensors are typically used to measure wavelength and amplitude changes of optical signals transmitted in optical fibers. These two optical signal sensors have many disadvantages, such as the inability to achieve real-time monitoring of optical signals, slow spectral scanning rates, slow modulation rates, and low resolution.

[0039] Currently, there is an optical signal sensor that adopts a chip-based design and takes into account the polarization sensitivity of the optical waveguide chip. It allows the optical signal to first pass through a spectral perturbation structure, which simultaneously perturbs the optical signal's two light components in different polarization states (i.e., TE polarized light and TM polarized light). Then, a polarization beam splitter cascaded after the spectral perturbation structure is used to separate the TE polarized light and TM polarized light and send them to corresponding photodetectors. The photodetectors obtain electrical signals of different polarization components and send them to the signal processor. The signal processor obtains the spectra of the different polarization components to reconstruct the spectrum of the input optical signal and realize the measurement of the input optical signal.

[0040] The inventors of this application have found that although the above-mentioned optical signal sensor has made great progress in many aspects such as achieving real-time monitoring of optical signals, improving spectral scanning rate, improving modulation rate, and improving resolution, the actual spectral measurement effect is still poor.

[0041] In this regard, after research, the inventors of the present application proposed that the reason why the above-mentioned optical signal sensor has poor spectral measurement effect is that it requires a spectral perturbation structure with good perturbation quality for both TE polarized light and TM polarized light. However, the refractive index difference between TE polarized light and TM polarized light is large. When actually designing a spectral perturbation structure, it is difficult to take into account the perturbation quality for both TE polarized light and TM polarized light. This results in a situation where the perturbation quality for one polarized light is good but the perturbation quality for the other polarized light is poor.

[0042] The inventors of the present application further proposed that two polarization-state input optical signals are separated by using a polarization separation rotator, and the two polarization light signals obtained after separation are respectively input into two spectral perturbation chips. In this way, the two spectral perturbation chips can independently perform perturbation processing on the polarization light signals passing through themselves, and there is no need to consider how to balance the perturbation quality for TE polarized light and the perturbation quality for TM polarized light. Subsequently, the two perturbation light signals obtained by the two spectral perturbation chips are respectively input into two photodetectors, and the two photodetectors respectively detect the electrical signals corresponding to the two polarization state light signals after perturbation. Finally, the signal processor can obtain the optical signal measurement results based on the two electrical signals, which improves the spectral measurement effect while greatly saving the design cost of the spectral perturbation chip.

[0043] As a first aspect of an embodiment of the present application, a method for measuring an optical signal is provided, such as Figure 1 As shown, the method may include:

[0044] Step S110: Input the optical signal to be measured into a pre-built optical signal sensor to obtain an optical signal measurement result output by the optical signal sensor; wherein the optical signal sensor includes a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor; the polarization separation rotator PBRS performs polarization state separation processing on the input optical signal to be measured to obtain two polarized optical signals; the two spectral perturbation chips respectively perform perturbation processing on the two polarized optical signals to obtain two perturbed optical signals; the two photodetectors respectively detect the two perturbed optical signals to obtain two electrical signals; and the signal processor outputs the optical signal measurement result based on the two electrical signals.

[0045] like Figure 2 , which is a schematic diagram of an optical signal sensor provided by an embodiment of the present application, the optical signal sensor includes a polarization splitter rotator PBRS, two spectrum perturbation chips, two photodetectors and a signal processor.

[0046] When using this optical signal sensor, the optical signal in the optical communication link (such as an optical fiber) is input as the optical signal to be measured into the polarization separation rotator PBRS. The polarization separation rotator PBRS performs polarization state separation processing on the input optical signal to be measured to obtain two polarized optical signals, one of which is input into one of the spectrum perturbation chips, and the other polarized optical signal is input into the other spectrum perturbation chip. The two spectrum perturbation chips respectively perform perturbation processing on the polarized optical signals passing through themselves to obtain two perturbed optical signals, one of which is input into one of the photodetectors, and the other perturbed optical signal is input into the other photodetector. The two photodetectors respectively detect the perturbed optical signals passing through themselves to obtain two electrical signals. The two electrical signals are input into a signal processor, and the signal processor outputs optical signal measurement results based on the two electrical signals.

[0047] It is understood that the polarization splitter rotator (PBRS), the spectrum perturbation chip, and the photodetector may each include an optical waveguide (or optical input / output port) for transmitting optical signals between them, but this is not described in detail in the present embodiment. As a preferred embodiment, the optical input port of the spectrum perturbation chip can use a single-mode waveguide, which can be efficiently coupled to the single-mode optical fiber used in the optical communication link.

[0048] The embodiments of this application do not impose any particular restrictions on the type of spectrum perturbation chip. As a preferred embodiment, the spectrum perturbation chip can be a planar optical waveguide chip. The embodiments of this application do not impose any particular restrictions on the waveguide material used in the spectrum perturbation chip. For example, the waveguide can include silicon nitride waveguides, silicon waveguides, silicon oxide waveguides, thin-film lithium niobate waveguides, polymer waveguides, and the like.

[0049] The disturbance processing of the spectral disturbance chip refers to adjusting the power distribution of the polarized light signal in the frequency domain. As the number of disturbances increases, the multiple disturbance light signals obtained are highly uncorrelated, which is beneficial for the photoelectric detector and signal processor to perform spectral reconstruction of the measured light signal to obtain the light signal measurement result. The embodiments of this application will not be elaborated here.

[0050] The optical signal measurement method provided in the embodiment of the present application pre-constructs an optical signal sensor including a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor, inputs the optical signal to be measured into the pre-constructed optical signal sensor, and the polarization separation rotator separates the two optical signals to be measured with different polarization states, and then inputs the two polarized light signals obtained after separation into the two spectral perturbation chips respectively. In this way, the two spectral perturbation chips can independently perform perturbation processing on the polarized light signals passing through themselves, and there is no need to consider how to balance the perturbation quality of TE polarized light and the perturbation quality of TM polarized light. Subsequently, the two perturbed light signals obtained by the two spectral perturbation chips are input into the two photodetectors respectively, and the two photodetectors respectively detect the electrical signals corresponding to the two polarization state light signals after perturbation. Finally, the signal processor obtains the optical signal measurement result based on the two electrical signals, while improving the spectral measurement effect while greatly saving the design cost of the spectral perturbation chip.

[0051] The inventors of this application further proposed that a polarization separation rotator PBRS separates the input optical signal to be measured into two polarized light signals. By converting one of the polarized light signals into an optical signal of another polarization state, the two polarized light signals obtained belong to the same polarization state. It is then possible to design a spectral perturbation chip only for one of the polarization states, which can further save the design cost of the spectral perturbation chip.

[0052] Accordingly, in some embodiments, Figure 3 As shown, the polarization separation rotator PBRS performs polarization state separation processing on the input optical signal to be measured to obtain two polarized optical signals, which may include:

[0053] In step S210, the polarization separation rotator PBRS separates the input optical signal to be measured according to different polarization states to obtain a separated optical signal of a first polarization state and a separated optical signal of a second polarization state, and performs polarization state conversion on the separated optical signal of the second polarization state to obtain a converted optical signal of a first polarization state; wherein the two polarized optical signals include the separated optical signal of the first polarization state and the converted optical signal of the first polarization state.

[0054] The inventors of the present application further propose that, as a preferred embodiment that is easier to implement, the first polarization state includes a TE polarization state, and the second polarization state includes a TM polarization state.

[0055] The inventors of this application further propose that by cascading multiple active tunable spectrum perturbation units and providing a phase modulator on each active tunable spectrum perturbation unit as a spectrum perturbation chip, the phase modulator is controlled by a control signal from a signal processor to tune the phase of the optical signal passing through the active tunable spectrum perturbation unit in which it is located, thereby generating different disturbances on the optical signal in a timing sequence. In this way, the spectrum perturbation chip can obtain different output optical signals (i.e., perturbed optical signals) in a timing sequence for different input optical signals (i.e., polarized optical signals).

[0056] Accordingly, in some embodiments, the spectrum perturbation chip includes a plurality of cascaded active tunable spectrum perturbation units and a phase modulator disposed on each of the active tunable spectrum perturbation units, such as Figure 4 As shown, the two spectrum perturbation chips respectively perform perturbation processing on the two polarized light signals to obtain two perturbed light signals may include:

[0057] In step S310, each phase modulator, under the control of the signal processor, tunes the phase of the optical signal passing through its own active tunable spectrum perturbation unit, so that the last active tunable spectrum perturbation unit cascaded in the spectrum perturbation chip outputs a perturbed optical signal.

[0058] like Figure 5 FIG. 1 is a schematic diagram of a spectrum perturbation chip provided in an embodiment of the present application. The spectrum perturbation chip includes a plurality of cascaded active tunable spectrum perturbation units, each of which is further provided with a phase modulator ( Figure 5 not shown).

[0059] It should be noted that in the embodiment of the present application, there is no special limitation on the number of phase modulators provided on each active tunable spectrum perturbation unit, and the number can be 1 or 2.

[0060] The inventors of the present application further propose that the multiple active tunable spectrum perturbation units cascaded in the spectrum perturbation chip can be of any of the following types or a combination thereof: a microring resonant cavity structure, a Mach-Zehnder interferometer (MZI). Figure 6a 、 Figure 6b 、 Figure 6c Schematic diagrams of three different implementations of the spectrum perturbation chip provided in the examples of this application. Figure 6a As shown in FIG, four MZIs are cascaded in the spectrum perturbation chip, and two phase modulation structures (i.e., phase modulators) are set on each MZI. Figure 6bAs shown in FIG, the spectrum perturbation chip cascades one MZI and three micro-ring resonant cavity structures, two phase modulation structures (i.e., phase modulators) are set on each MZI, and one phase modulation structure (i.e., phase modulator) is set on each micro-ring resonant cavity structure. Figure 6c As shown, four micro-ring resonant cavity structures are cascaded in the spectrum perturbation chip, and a phase modulation structure (ie, phase modulator) is set on each micro-ring resonant cavity structure.

[0061] It is understandable that Figure 6a 、 Figure 6b 、 Figure 6c Four active tunable spectral perturbation units (either MZI or microring resonant cavity structure) are shown in the figure, but they are all exemplary descriptions. The embodiment of the present application is not limited to this number of active tunable spectral perturbation units cascaded in the spectral perturbation chip.

[0062] As a second aspect of the embodiments of the present application, an electronic device is provided, wherein, Figure 7 As shown, the electronic device includes:

[0063] One or more processors 101;

[0064] The memory 102 stores one or more computer programs. When the one or more computer programs are executed by the one or more processors 101, the one or more processors 101 implement the optical signal measurement method provided in the first aspect of the embodiment of the present application.

[0065] The electronic device may further include one or more I / O interfaces 103 connected between the processor 101 and the memory 102 and configured to implement information exchange between the processor 101 and the memory 102 .

[0066] Among them, the processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read-write interface) is connected between the processor and the memory, and can realize information exchange between the processor and the memory, including but not limited to a data bus (Bus), etc.

[0067] In some embodiments, the processor 101 , the memory 102 , and the I / O interface 103 are connected to each other via a bus 104 , and further connected to other components of the computing device.

[0068] As a third aspect of an embodiment of the present application, an optical signal sensor is provided, which includes a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor; the polarization separation rotator PBRS is used to perform polarization state separation processing on the input optical signal to be measured to obtain two polarized light signals; the two spectral perturbation chips are used to perform perturbation processing on the two polarized light signals respectively to obtain two perturbed light signals; the two photodetectors are used to detect the two perturbed light signals respectively to obtain two electrical signals; and the signal processor is used to output the optical signal measurement results according to the two electrical signals.

[0069] When describing the optical signal measurement method provided in the first aspect of the embodiment of the present application, the optical signal sensor provided in the second aspect of the embodiment of the present application has been described in detail, so it will not be repeated here.

[0070] The optical signal sensor provided in the embodiment of the present application pre-constructs an optical signal sensor including a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor. The optical signal to be measured is input into the pre-constructed optical signal sensor, and the polarization separation rotator separates the two optical signals to be measured with different polarization states. The two polarized light signals obtained after separation are then input into the two spectral perturbation chips respectively. In this way, the two spectral perturbation chips can independently perform perturbation processing on the polarized light signals passing through themselves, and there is no need to consider how to balance the perturbation quality for TE polarized light and the perturbation quality for TM polarized light. Subsequently, the two perturbed light signals obtained by the two spectral perturbation chips are input into the two photodetectors respectively, and the two photodetectors respectively detect the electrical signals corresponding to the two polarization state light signals after perturbation. Finally, the signal processor obtains the optical signal measurement result according to the two electrical signals. While improving the spectral measurement effect, it also greatly saves the design cost of the spectral perturbation chip.

[0071] In some embodiments, the polarization separation rotator PBRS is used to: separate the input optical signal to be measured according to different polarization states to obtain a separated optical signal of a first polarization state and a separated optical signal of a second polarization state, and perform polarization state conversion on the separated optical signal of the second polarization state to obtain a converted optical signal of a first polarization state; wherein the two polarized optical signals include the separated optical signal of the first polarization state and the converted optical signal of the first polarization state.

[0072] In some embodiments, the first polarization state comprises a TE polarization state and the second polarization state comprises a TM polarization state.

[0073] In some embodiments, the spectrum perturbation chip includes a plurality of cascaded active tunable spectrum perturbation units and a phase modulator arranged on each of the active tunable spectrum perturbation units. Each of the phase modulators is used to tune the phase of the optical signal passing through the active tunable spectrum perturbation unit in which it is located under the control of the signal processor, so that the last active tunable spectrum perturbation unit cascaded in the spectrum perturbation chip outputs a perturbed optical signal.

[0074] As a fourth aspect of the embodiment of the present application, Figure 8 As shown, a computer-readable medium is provided, on which a computer program is stored, wherein when the computer program is executed by a processor, the optical signal measurement method provided in the first aspect of the embodiment of the present application is implemented.

[0075] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program. Accordingly, the computer program can be stored in a non-volatile computer-readable storage medium, and when the computer program is executed, it can implement the method of any of the above-mentioned embodiments. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the embodiments of the present application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0076] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present application are included within the scope of the claims.

Claims

1. A method for measuring an optical signal, characterized in that: The method comprises: The optical signal to be measured is input into a pre-built optical signal sensor to obtain an optical signal measurement result output by the optical signal sensor; wherein the optical signal sensor includes a polarization separation rotator PBRS, two spectral perturbation chips, two photodetectors and a signal processor, the polarization separation rotator PBRS performs polarization state separation processing on the input optical signal to be measured to obtain two polarized optical signals, the two spectral perturbation chips respectively perform perturbation processing on the two polarized optical signals to obtain two perturbed optical signals, the two photodetectors respectively detect the two perturbed optical signals to obtain two electrical signals, the signal processor outputs the optical signal measurement result according to the two electrical signals, and the spectral perturbation chip includes a plurality of cascaded active tunable spectral perturbation units and a phase modulator arranged on each of the active tunable spectral perturbation units.

2. The method according to claim 1, characterized in that The polarization separation rotator PBRS performs polarization state separation processing on the input optical signal to be measured to obtain two polarized optical signals, including: The polarization separation rotator PBRS separates the input optical signal to be measured according to different polarization states to obtain a separated optical signal of a first polarization state and a separated optical signal of a second polarization state, and performs polarization state conversion on the separated optical signal of the second polarization state to obtain a converted optical signal of a first polarization state; wherein the two polarized optical signals include the separated optical signal of the first polarization state and the converted optical signal of the first polarization state.

3. The method according to claim 2, characterized in that The first polarization state includes a TE polarization state, and the second polarization state includes a TM polarization state.

4. The method according to claim 1, wherein The two spectrum perturbation chips respectively perform perturbation processing on the two polarized light signals to obtain two perturbation light signals, including: Under the control of the signal processor, each phase modulator tunes the phase of the optical signal passing through its own active tunable spectrum perturbation unit, so that the last active tunable spectrum perturbation unit cascaded in the spectrum perturbation chip outputs a perturbed optical signal.

5. An electronic device, characterized in that: The electronic device comprises: one or more processors; A memory having one or more computer programs stored thereon, wherein when the one or more computer programs are executed by the one or more processors, the one or more processors implement the optical signal measurement method according to any one of claims 1 to 4.

6. An optical signal sensor, characterized in that: The optical signal sensor includes a polarization separation rotator (PBRS), two spectrum perturbation chips, two photodetectors, and a signal processor. The polarization separation rotator (PBRS) is used to perform polarization separation processing on the input optical signal to be measured to obtain two polarized optical signals. The two spectral perturbation chips are used to perform perturbation processing on the two polarized light signals respectively to obtain two perturbed light signals; the two photodetectors are used to detect the two perturbed light signals respectively to obtain two electrical signals; the signal processor is used to output the optical signal measurement results according to the two electrical signals. The spectral perturbation chip includes a plurality of cascaded active tunable spectral perturbation units and a phase modulator arranged on each of the active tunable spectral perturbation units.

7. The optical signal sensor according to claim 6, characterized in that The polarization separation rotator PBRS is used to: separate the input optical signal to be measured according to different polarization states to obtain a separated optical signal of a first polarization state and a separated optical signal of a second polarization state, and perform polarization state conversion on the separated optical signal of the second polarization state to obtain a converted optical signal of a first polarization state; wherein the two polarized optical signals include the separated optical signal of the first polarization state and the converted optical signal of the first polarization state.

8. The optical signal sensor according to claim 7, characterized in that The first polarization state includes a TE polarization state, and the second polarization state includes a TM polarization state.

9. The optical signal sensor according to claim 6, wherein: Each phase modulator is used to tune the phase of the optical signal passing through its own active tunable spectrum perturbation unit under the control of the signal processor, so that the last active tunable spectrum perturbation unit cascaded in the spectrum perturbation chip outputs a perturbed optical signal.

10. A computer-readable medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the optical signal measurement method according to any one of claims 1 to 4 is implemented.

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