Optical signal detection apparatus and optical device

Abstract

An optical signal detection apparatus and an optical device, relating to the technical field of optical communications, for use in improving the efficiency and accuracy of optical signal detection. The apparatus may at least comprise a light reflection unit, a driving unit and a light receiving unit, wherein the driving unit is connected to the light reflection unit. In the apparatus, the driving unit outputs driving signals having different step durations, and can, when outputting different driving signals, drive the light reflection unit to adjust a reflection angle in different ways, so that the light receiving unit can receive different optical signals reflected from the light reflection unit. In this way, the apparatus can enable the light receiving unit to read two different optical signals, so that when the optical signals are converted into electrical signals, optical signal detection in two different detection modes can be performed.

Description

Optical signal detection device and optical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on March 19, 2024, with application number 202410318239.7 and application name "A Light Signal Detection Device", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of optical communication technology, and in particular to an optical signal detection device and an optical equipment. Background Art

[0004] In optical communication networks, the transmission reliability and stability of optical signals are key factors that require attention. Therefore, how to detect and monitor the transmission of optical signals is worth considering.

[0005] For example, in optical cross connection (OXC) scenarios, an optical power signal detection mode can generally be used. That is, by measuring the optical power signal of each optical input / output port and reporting it in a timely manner, the optical system can respond according to the detected optical power value, thereby ensuring the reliability and stability of optical signal transmission. For another example, in some optical transmission scenarios, a modulation signal detection mode can also be used, such as light sensor (LS) detection, to obtain information such as link status and connection status.

[0006] However, different detection modes operate differently. For example, reading optical power signals generally requires a scanner with a scanning frequency of at least 20 Hz to quickly read the signal, while reading optical modulation signals typically requires a scanning frequency of less than 10 Hz. Therefore, the two optical signal detection modes place different requirements on the scanner, resulting in incompatibility between the various detection methods currently available. Summary of the Invention

[0007] The embodiments of the present application provide an optical signal detection apparatus and an optical device to achieve compatibility with multiple optical signal detection modes, thereby improving the efficiency and accuracy of optical signal detection.

[0008] In a first aspect, an embodiment of the present application provides an optical signal detection device. The device includes a driving unit, a light reflecting unit, and a light receiving unit. The driving unit is connected to the light reflecting unit. The driving unit is used to output a first driving signal in a first detection mode and a second driving signal in a second detection mode, and the time length of the step of the first driving signal is greater than the time length of the step of the second driving signal; the light reflecting unit is used to receive the first driving signal and adjust the reflection angle according to the first driving signal; or, the light reflecting unit is used to receive the second driving signal and adjust the reflection angle according to the second driving signal; the light receiving unit is used to receive the first optical signal reflected from the light reflecting unit and convert the first optical signal into a first electrical signal, and the first electrical signal is applied to the first detection mode; or, the light receiving unit is used to receive the second optical signal reflected from the light reflecting unit and convert the second optical signal into a second electrical signal, and the second electrical signal is applied to the second detection mode.

[0009] In this device, by outputting drive signals with different step lengths from the drive unit, the light reflecting unit can be driven to adjust the reflection angle in different ways, allowing the light receiving unit to receive different light signals. After the light signals are converted into electrical signals, light signal detection in different detection modes can be performed. In this way, the light signal detection device can read at least two different light signals and implement light signal detection in at least two different detection modes, thereby improving the diversity, efficiency, and accuracy of light signal detection. It is understood that three or more detection modes can be achieved by the drive unit outputting three or more different drive signals.

[0010] It should be noted that the number of optical elements is not limited in the embodiments of the present application. For example, the light reflecting unit may include one or more, and the light receiving unit may also include one or more. In addition, the driving signal may also be a stepping signal or other form of signal.

[0011] In one possible implementation, the first drive signal is a step signal including P values, where P is an integer greater than or equal to 2; the second drive signal is a continuous signal. Exemplarily, the duration of the steps of the first drive signal is greater than or equal to 1 millisecond.

[0012] In this implementation, a step signal with a step duration greater than a certain value is used as the first drive signal, and a continuous signal with a step duration less than a certain value is used as the second drive signal. This allows for multiple optical signal detection modes to be implemented, thereby improving the diversity, efficiency, and accuracy of optical signal detection.

[0013] In one possible implementation, the light reflecting unit further includes an optical reflective surface. Optionally, the light reflecting unit is configured to adjust a reflection angle according to the first drive signal, specifically to adjust the reflection angle of the optical reflective surface in a stepwise or stepped manner according to the first drive signal. Alternatively, the light reflecting unit is configured to adjust the reflection angle according to the second drive signal, specifically to continuously adjust the reflection angle of the optical reflective surface according to the second drive signal.

[0014] In this implementation, by driving the light reflecting unit to adjust the reflection angle in different ways through a driving signal, the light receiving unit can receive different light signals, thereby simultaneously realizing two modes of light signal detection, such as an optical power signal detection mode and a modulation signal detection mode, etc., which can improve the diversity of light signal detection.

[0015] Optionally, the light reflecting unit and the driving unit may be integrated into a single device. The light reflecting unit may include one or more optical reflecting surfaces. Furthermore, in addition to at least one optical reflecting surface, the light reflecting unit may also include a driving structure configured to drive the at least one optical reflecting surface to adjust the reflection angle.

[0016] In one possible implementation, the optical reflective surface is a micromirror with vertical electrostatic comb teeth (the micromirror is, for example, a micro-electro-mechanical system (MEMS) micromirror), or a micromirror with an electromagnetic drive coil (the micromirror is, for example, a MEMS micromirror), or a reflective mirror surface driven by a voice coil motor or piezoelectric ceramics.

[0017] In this implementation, the light reflection unit integrated by these methods can be achieved by stagnating at a reflection angle when receiving a drive from a discrete signal such as a step signal (or step signal) until the drive signal value at the next moment arrives, and then adjusting to another reflection angle.

[0018] In one possible implementation, the device further includes: a first optical processing unit and a second optical processing unit. The first optical processing unit is configured to converge, reflect, or transmit optical signals; the optical reflection unit is further configured to reflect optical signals from the first optical processing unit; and the second optical processing unit is configured to diverge, reflect, or transmit optical signals reflected by the optical reflection unit.

[0019] In this implementation, the optical processing unit can be used to adjust the path for transmitting the optical signal in the optical signal detection device, thereby more effectively transmitting the optical signal.

[0020] In a possible implementation manner, the first light processing unit and the second light processing unit are the same component.

[0021] This implementation utilizes the same component to not only converge the optical signal before it passes through the optical reflector, but also diverge the optical signal after it passes through the optical reflector. Consequently, this approach can reduce the number of optical processing units, thereby lowering hardware costs and reducing the size of the optical signal detection device.

[0022] In the above implementation, when the optical signal detection device includes an optical transmission unit, the optical transmission unit and the optical receiving unit may be located on the same side or in the same plane relative to the optical reflection unit. The optical transmission unit may be used by the optical signal detection device to receive optical signals from other devices or components and transmit them to the optical reflection unit, thereby enabling optical signal detection as described above.

[0023] In this implementation, accurate transmission of optical signals can be guaranteed by designing the relative positions of the optical transmission unit, the optical receiving unit, and the optical reflection unit.

[0024] In one possible implementation, the light reflecting unit may include multiple rotation axes. Optionally, the light reflecting unit may include a first rotation axis and a second rotation axis. The first rotation axis may be used to adjust the reflection angle of the light reflecting unit, thereby enabling the light receiving unit to receive different light signals from the light reflecting unit. The second rotation axis may be used to adjust the placement of the light reflecting unit to improve the reflection accuracy of the reflection angle adjustment around the first rotation axis, thereby ensuring the accurate operation of the light reflecting unit and enabling the light receiving unit to accurately receive the light signal from the light reflecting unit.

[0025] In the above implementation, the light reflecting unit receives the first drive signal or the second drive signal from the drive unit and can adjust the reflection angle about the first rotation axis. Exemplarily, the drive unit is further configured to output a third drive signal; the light reflecting unit is further configured to receive the third drive signal and adjust the orientation of the light reflecting unit about the second rotation axis based on the third drive signal. It is understood that in embodiments of the present application, the second rotation axis may be omitted, and at least the first rotation axis may be included.

[0026] In this implementation, the light reflecting unit can improve the adjustment accuracy of the reflection angle around the first rotation axis in response to the drive of the driving unit by adjusting the placement direction around the second rotation axis, thereby facilitating the light receiving unit to more accurately receive the light signal reflected from the light reflecting unit.

[0027] In one possible implementation, the device further includes L optical output ports, the L optical output ports being arranged in an array, where L is an integer greater than or equal to 2, and the L optical output ports being used to transmit optical signals to the optical reflecting unit. The L signal values ​​of the first drive signal have a one-to-one correspondence with the L optical output ports; or the L signal values ​​of the second drive signal have a one-to-one correspondence with the L optical output ports, and the signal values ​​are used by the optical receiving unit to determine the optical output port corresponding to the received optical signal. Exemplarily, the optical receiving unit receives an optical signal at a first moment and obtains the signal value corresponding to the first moment; then, based on the signal value corresponding to the first moment, the reflection angle of the optical reflecting unit at this moment can be determined, thereby determining which optical output port the optical signal received at the first moment originates from. It can be understood that the reflection angle of the optical reflecting unit can be used to determine the reflection path of the optical signal.

[0028] In this implementation, by designing the correspondence between the signal value of the driving signal and the optical output port, the signal value of the driving signal can be used to determine which port of the optical transmission unit the optical signal received by the optical receiving unit at each moment originates from. This allows the optical signal received by the optical receiving unit at each moment to correspond to the optical output port of the optical transmitting unit, thereby obtaining information such as the optical power value corresponding to each optical output port, thereby facilitating more accurate optical signal detection.

[0029] In another possible implementation, the device further includes L optical output ports and a feedback unit, wherein the L optical output ports are arranged in an array, and the L optical output ports are used to transmit optical signals to the optical reflecting unit. The feedback unit is used to obtain the actual reflection angle of the optical reflecting unit, and the actual reflection angle is used by the optical receiving unit to determine that the received optical signal corresponds to the first optical output port; wherein the L reflection angles have a one-to-one correspondence with the L optical output ports, and the actual reflection angle is one of the L reflection angles. Exemplarily, based on the obtained actual reflection angle, it can be determined which optical output port the optical signal received at this moment originates from. It can be understood that the reflection angle of the optical reflecting unit can be used to determine the reflection path of the optical signal.

[0030] In this implementation, based on the design of the correspondence between the reflection angle and the optical output port, the actual reflection angle obtained by the feedback unit can determine which port of the optical transmission unit the optical signal received by the optical receiving unit at each moment originates from. Furthermore, the optical signal received by the optical receiving unit at each moment can be corresponded to the optical output port of the optical transmission unit, so that information such as the optical power value corresponding to each optical output port can be obtained, which facilitates more accurate optical signal detection.

[0031] In a possible implementation, the feedback unit may include, but is not limited to: a resistive sensor, a piezoelectric sensor, a Hall sensor, a magnetic sensor, an optical sensor, and an encoder.

[0032] In a possible implementation, the light receiving unit includes at least one light detector, wherein the at least one light detector is configured to receive the first light signal or the second light signal reflected by the light reflecting unit.

[0033] In this implementation, the optical signal reflected from the optical reflection unit can be received by the optical detector, and the optical signal detection using multiple different detection modes provided in the embodiment of the present application can be realized.

[0034] In one possible implementation, the optical receiving unit further includes at least one signal processing unit. The at least one signal processing unit is configured to convert the first optical signal into a first electrical signal, where the first electrical signal is a modulated signal, and to demodulate the first electrical signal. The at least one signal processing unit is further configured to convert the second optical signal into a second electrical signal, where the second electrical signal is a power signal. Optionally, the at least one optical detector corresponds to the at least one signal processing unit.

[0035] Exemplarily, the signal processing unit may include a first signal processing unit and a second signal processing unit. The first signal processing unit is used to convert the first optical signal into a first electrical signal, which is an electrically modulated signal; and is also used to demodulate the first electrical signal to obtain a demodulated first electrical signal. Alternatively, the second signal processing unit is used to convert and read the second optical signal to obtain a second electrical signal, which is a power signal. It can be understood that the photoelectric conversion processing of different optical signals can be implemented by an integrated signal processing unit or by two independent signal processing units.

[0036] In this implementation, the signal processing unit can perform photoelectric conversion and corresponding signal processing on the received optical signal, thereby obtaining a signal format for optical signal detection. Furthermore, the signal processing unit can read two or more different electrical signals, thereby enabling multiple modes of optical signal detection.

[0037] In one possible implementation, the device further includes L optical output ports arranged in a linear array; the at least one optical detector corresponds one-to-one with the L optical output ports. Alternatively, the device further includes L optical output ports arranged in a planar array, the planar array including M rows and N columns, and the at least one optical detector corresponds one-to-one with the optical output ports in the M rows, or the at least one optical detector corresponds one-to-one with the optical output ports in the N columns.

[0038] In this implementation, by having the light receiving unit include multiple light detectors, it is possible to perform averaging processing on the signals received by the multiple light detectors, thereby improving the accuracy of the received signal and reducing the error of the received signal.

[0039] In a second aspect, an embodiment of the present application provides an optical device, comprising an optical signal detection device as described in the first aspect and any possible implementation of the first aspect, an optical transmitter and / or an optical receiver, and a splitter unit. The optical transmitter is used for the optical device to transmit an optical signal; the optical receiver is used for the optical device to receive an optical signal; the splitter unit is used to split the optical signal transmitted by the optical transmitter to obtain a split signal, or to split the optical signal received by the optical receiver to obtain a split signal; the optical signal detection device is used to receive the split signal from the splitter unit, and the split signal is used by the optical signal detection device to perform optical signal detection.

[0040] In a third aspect, an embodiment of the present application provides an optical communication system, comprising the optical signal detection apparatus described in the first aspect or any possible implementation of the first aspect, or comprising the optical device described in the second aspect.

[0041] Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1a is a schematic diagram of the hardware structure of an optical device 100A provided in an embodiment of the present application;

[0043] FIG1b is a schematic diagram of the hardware structure of an optical device 100B provided in an embodiment of the present application;

[0044] FIG2a is a hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application;

[0045] FIG2 b is a second hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application;

[0046] FIG3 a is a hardware structure diagram of an optical transmission unit 201 according to an embodiment of the present application;

[0047] FIG3 b is a second hardware structure diagram of an optical transmission unit 201 provided in an embodiment of the present application;

[0048] FIG3 c is a third hardware structure diagram of an optical transmission unit 201 provided in an embodiment of the present application;

[0049] FIG4a is a schematic diagram of a first driving signal and adjusting a reflection angle according to an embodiment of the present application;

[0050] FIG4 b is a second schematic diagram of the first driving signal and the adjustment of the reflection angle provided in an embodiment of the present application;

[0051] FIG5 is a schematic diagram of a second driving signal and an adjustment of a reflection angle provided in an embodiment of the present application;

[0052] FIG6 is a schematic diagram of a signal receiving unit 204 according to an embodiment of the present application;

[0053] FIG7 is a second schematic diagram of the hardware structure of the light receiving unit 204 shown in an embodiment of the present application;

[0054] FIG8 a is a schematic diagram of the hardware structure of the light detector 701 according to an embodiment of the present application;

[0055] FIG8 b is a second schematic diagram of the hardware structure of the light detector 701 according to an embodiment of the present application;

[0056] FIG9 is a schematic structural diagram of a signal processing unit 702 provided in an embodiment of the present application;

[0057] FIG10a is a schematic diagram of a first optical signal / first electrical signal according to an embodiment of the present application;

[0058] FIG10b is a second signal schematic diagram of the first optical signal / first electrical signal provided in an embodiment of the present application;

[0059] FIG11 is a signal diagram of a second optical signal / second electrical signal provided in an embodiment of the present application;

[0060] FIG12 is a third hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application;

[0061] FIG13 is a fourth hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application;

[0062] FIG14 is a fifth hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application;

[0063] FIG15 is a schematic diagram of angle adjustment of the light reflecting unit 202 provided in an embodiment of the present application;

[0064] FIG16 is a sixth hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0066] The optical signal detection device provided in the embodiments of the present application can be applied to an optical communication system, specifically, at at least one input port and / or at least one output port in the optical communication system to detect an optical signal. Exemplary optical communication systems may include, but are not limited to, OXC scenarios, wavelength selection switches (WSS), optical switches (OSW), and optical transceiver components.

[0067] To facilitate understanding, the technical concepts involved in the embodiments of this application are first explained.

[0068] (1) OXC: It is used to achieve physical cross-connection between multiple input and multiple output optical ports. It can effectively manage the optical fiber transmission network and is an important means to achieve reliable network automatic wiring, network protection, recovery and detection.

[0069] Current OXC implementation paths mainly include: MEMS OXC based on micro-electro-mechanical systems (MEMS) and OXC based on silicon photonics technology. Among them, MEMS OXC generally has higher reliability and lower insertion loss.

[0070] (2) Optical Power Signal Detection Mode: The optical signal detection device measures the power of the optical signal at the optical input port or optical output port and reports it to the upper-layer device. The upper-layer device may be, for example, an optical device or an optical system, and this application does not limit the upper-layer device.

[0071] Accordingly, the upper layer device responds according to the measured optical power value and can obtain the optical signal transmission status, etc., thereby ensuring the reliability and stability of the optical signal transmission.

[0072] In one possible scenario, taking a MEMS OXC with 256 output ports as an example, to ensure the reliability and stability of the entire device, the optical power signal of each output port needs to be measured and reported in a timely manner. The optical system responds based on the measured optical power value to ensure the normal operation of the entire device.

[0073] (3) Modulation signal detection mode: The optical signal detection device measures and reports the optical modulation signal at the optical input port or optical output port to the upper-layer device. The optical modulation signal may include, but is not limited to, an amplitude modulation signal (also called a "peak modulation signal") and a frequency modulation signal.

[0074] Correspondingly, after the upper-layer equipment performs optoelectronic conversion and demodulation processing based on the measured optical modulation signal, it can obtain information such as the link status and connection status during the optical signal transmission process, such as important information such as rate and code type, and can monitor the channel transmitting the optical signal.

[0075] It should be noted that the embodiments of the present application may also be applicable to other possible optical signal detection modes, such as optical signal detection modes that may appear in the future.

[0076] (4) Time-sharing detection: Different detection modes are used to detect optical signals at different times. These detection methods can be used in conjunction with scanners with optical reflective surfaces to achieve time-sharing detection of optical signals, thereby improving system efficiency and reducing the amount of hardware.

[0077] However, different detection modes operate differently. For example, reading optical power signals generally requires a scanner with a scanning frequency of 20 Hz or higher to quickly read the signal, while reading optical modulation signals requires a scanning frequency typically below 10 Hz. These two modes place different requirements on the scanner, resulting in incompatibility between various current detection methods.

[0078] In view of this, an embodiment of the present application provides an optical signal detection device for realizing time-sharing detection of optical signals, that is, different detection methods can be used to detect optical signals at different times. In the optical signal detection device, the driving unit outputs a driving signal with different step time lengths, which can drive the optical reflection unit to adjust different reflection angles, thereby enabling the optical receiving unit to read different optical signals. In this way, based on the different optical signals received, different detection modes can be used for optical signal detection, thereby realizing time-sharing detection, improving the detection diversity, efficiency and accuracy of the optical system; and, it can also reduce the amount of hardware. In scenarios where multiple detection modes are required for optical signal detection, one optical signal detection device can be shared, thereby reducing hardware costs and hardware volume.

[0079] In some possible application scenarios, the optical signal detection device can be integrated into an optical device. For example, Figure 1a is a schematic diagram of the hardware structure of an optical device 100A provided in an embodiment of the present application. The optical device 100A may include: at least one processor 103, at least one output port 104, a splitter 105 (also referred to as a "splitting unit" in the embodiment of the present application) and an optical signal detection device 106.

[0080] Processor 103 can be used for internal processing of the device to implement certain control processing functions. Optionally, processor 103 includes instructions. Optionally, different processors can be independent devices, located in different physical locations, or on different integrated circuits. Optionally, different processors can be integrated into one or more processors, for example, on one or more integrated circuits.

[0081] At least one output port 104 can be used by the optical device 100A to transmit an optical signal to another device. The optical device 100A can transmit the optical signal via an optical fiber. In this embodiment of the present application, the optical signal detected by the optical signal detection device 106 can be a portion of the signal split from the optical signal output from the output port 104 by the optical splitter 105. It will be appreciated that the optical signal detection device 106 can perform optical signal detection through the optical splitter 105 without affecting the transmission of the original service optical signal.

[0082] Optionally, the optical device 100A includes at least one input port 101. The at least one input port 101 can be used for the optical device 100A to receive an optical signal from another device. The optical device 100A can receive the input optical signal through an optical fiber.

[0083] Optionally, the optical device 100A includes a communication line 102. Since the at least one input port 101 and the communication line 102 are both optional, they are both indicated by dotted lines in FIG1a.

[0084] The processor 103 may include a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0085] The communication link 102 may include a pathway for transmitting information between the aforementioned components.

[0086] In a specific implementation, as an embodiment, the processor 103 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 1 a .

[0087] In a specific implementation, as an example, the optical device 100A may include multiple processors, not shown in FIG1a . Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0088] The embodiment of the present application can divide the functional modules of the device according to the above example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0089] For another example, Figure 1b is a schematic diagram of the hardware structure of an optical device 100B provided in an embodiment of the present application. Differences from Figure 1a are that optical device 100B includes at least one input port 101, at least one processor 103, an optical splitter 105, and an optical signal detection device 106. The optical signal detected by optical signal detection device 106 may also be a partial signal split from the optical signal input from input port 101 by optical splitter 105. It will be appreciated that, through optical splitter 105, optical signal detection can be performed by optical signal detection device 106 without affecting the reception of the original service optical signal.

[0090] Since the at least one output port 104 and the communication line 102 are both optional, they are both represented by dotted lines in FIG. 1 b .

[0091] In other possible application scenarios, the optical signal detection device can also be independently installed outside the optical device. This application does not limit the integration location or installation location of the optical signal detection device. It can be installed at any location during the optical signal transmission process. After obtaining a portion of the transmitted optical signal through a splitting unit / device such as a splitter, optical signal detection can be performed based on this portion of the optical signal.

[0092] Figure 2a is a hardware diagram of an optical signal detection device 106 provided in an embodiment of the present application. The optical signal detection device 106 may include a light reflecting unit 202, a driving unit 203, and a light receiving unit 204. With reference to Figures 1a and 1b , the optical signal received by the light reflecting unit 202 may originate from the splitting signal of the optical splitter 105 included in the optical device. The specific implementation functions of the light reflecting unit 202, the driving unit 203, and the light receiving unit 204 are described in Figure 2b below and are not described in detail here.

[0093] Figure 2b is another hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application. The optical signal detection device 106 may include: an optical transmission unit 201, an optical reflection unit 202, a driving unit 203, and an optical receiving unit 204. The difference from Figure 2a is that the optical signal detection device 106 may also include an optical transmission unit 201. For example, the optical transmission unit 201 can be used to detect the splitting signal from the optical splitter 105 and then continue to transmit it. For another example, the optical transmission unit 201 can also be used to receive an optical signal for optical signal detection from other devices or equipment. Among them,

[0094] (1) The optical transmission unit 201 may include a plurality of optical output ports arranged in a linear array or a planar array. As shown in FIG2b , the optical transmission unit 201 includes 7 optical output ports arranged in a linear array. It should be noted that the embodiment of the present application does not limit the number of the plurality of optical output ports included in the linear array. As shown in FIG3a , it still includes 8 optical output ports, or other numbers of optical output ports. It should also be noted that the embodiment of the present application does not limit the number and arrangement of the plurality of optical output ports included in the planar array. As shown in FIG3b , the optical transmission unit 201 may also include a plurality of output ports arranged in a planar array of M rows × N columns. M in FIG3b is 8, and N is 8. The number of rows and columns of the planar array is not limited in the implementation of the present application. As shown in FIG3c , when the optical transmission unit 201 arranges the plurality of output ports in a planar array of M rows × N columns, it may also adopt a form such as incomplete column alignment. 2b, 3a, 3b and 3c, it can be seen that the specific form of the optical output port included in the optical transmission unit 201 is not limited in the embodiment of the present application and can be determined according to the business scenario, etc.

[0095] The optical transmission unit 201 can be configured to output optical signals through the multiple optical output ports. As shown in Figures 1a and 1b , the optical signals output by the optical transmission unit 201 can be obtained by splitting the optical signals from the input port or output port of the optical device. Optionally, the optical signal detection device 106 can further include a detector or one or more other splitting receiving units for receiving the split signals from the optical splitter 105.

[0096] (2) The driving unit 203 is configured to output a first driving signal in the first detection mode and a second driving signal in the second detection mode. It is understood that, as shown in FIG2b , the driving unit 203 is connected to the light reflecting unit 202 and can be used to send the first driving signal or the second driving signal to the light reflecting unit 202. Alternatively, the driving unit 203 can be integrated into the light reflecting unit 202. The time length of the step of the first driving signal is greater than the time length of the step of the second driving signal. For example, the first driving signal can be a step signal with a step time length greater than or equal to 1 millisecond (ms), and the second driving signal can be a continuous signal, which can also be understood as a signal with a step time length less than 1 ms.

[0097] In the embodiment of the present application, the driving unit 203 is configured to output a driving signal to the light reflecting unit 202. Accordingly, the light reflecting unit 202 is configured to receive the driving signal from the driving unit 203 and adjust the reflection angle of the light reflecting unit 202 according to the driving signal.

[0098] Exemplarily, the first detection mode may be a modulation signal detection mode, and the second detection mode may be an optical power signal detection mode.

[0099] (3) The light reflecting unit 202 may include at least one optical reflecting surface. The at least one optical reflecting surface is used to reflect the optical signal from the light transmitting unit 201. It is understood that the light reflecting unit 202 may also include a driving structure, which may be used to drive the at least one optical reflecting surface to adjust the reflection angle.

[0100] Based on the different driving signals output by the driving unit 203, the following scenarios may be included but are not limited to:

[0101] In scenario A, the light reflecting unit 202 is configured to receive the first drive signal and adjust the reflection angle based on the first drive signal. Exemplarily, the first drive signal may be a step signal including P values, where P is an integer greater than or equal to 2. Accordingly, the light reflecting unit 202 adjusts the reflection angle of the at least one optical reflective surface in a stepwise or stepped manner based on the first drive signal.

[0102] Exemplarily, FIG4a is a schematic diagram of the first drive signal and the adjusted reflection angle provided in an embodiment of the present application, P can be 5, and the first drive signal includes V1, V2, V3, V4 and V5 that increase in sequence in a step form. Correspondingly, the adjusted reflection angles of the at least one optical reflective surface correspond to θ1, θ2, θ3, θ4 and θ5. The time length of each step included in the step signal is greater than or equal to a preset value, for example, it can be greater than or equal to the modulation period of the modulation signal, thereby improving the accuracy of receiving the modulated signal. As shown in FIG4a, the time length of the step can be understood as the duration of V1, V2, V3, V4 or V5 included in the first drive signal; wherein, the duration length of each signal value included in the first drive signal is generally the same.

[0103] As another example, Figure 4b is a schematic diagram of the first drive signal and the adjusted reflection angle provided in an embodiment of the present application. P can be 2, and the first drive signal can also include V6 and V7, which decrease in a stepwise manner. Accordingly, the adjusted reflection angles of the at least one optical reflective surface correspond to θ6 and θ7.

[0104] In addition, the first driving signal may also be a periodic step signal. Accordingly, the at least one optical reflective surface periodically adjusts its reflection angle.

[0105] It is understood that, as shown in the schematic diagrams of adjusting the reflection angle in Figures 4a and 4b, the light reflecting unit 202 can suspend the adjustment of the reflection angle at the corresponding reflection angle until the next adjustment of the reflection angle. Optionally, the at least one optical reflective surface can be implemented by, but not limited to, the following methods: a micromirror with vertical electrostatic comb teeth (such as a MEMS micromirror), a micromirror with an electromagnetic drive coil (such as a MEMS micromirror), or a reflective mirror driven by a voice coil motor or a piezoelectric ceramic.

[0106] In addition, as shown in FIG2b , the light reflecting unit 202 may include a first rotation axis, which is used to determine the direction in which the reflection angle of the light reflecting unit 202 is adjusted. For example, the light reflecting unit 202 may adjust the reflection angle of the at least one optical reflective surface about the first rotation axis based on the first drive signal. It will be appreciated that by rotating the optical reflective surface about the first rotation axis, the light reflecting unit 202 may achieve different reflection sources for the light beam received by the light receiving unit 204.

[0107] In scenario B, the light reflecting unit 202 is configured to receive the second drive signal and adjust the reflection angle based on the second drive signal. Exemplarily, the second drive signal may be a continuous signal. Accordingly, the light reflecting unit 202 adjusts the reflection angle of the at least one optical reflective surface based on the second drive signal.

[0108] In addition, the second driving signal may also be a periodic continuous signal, and the periodic frequency of the second driving signal is greater than or equal to the preset frequency; wherein, the greater the periodic frequency, the faster the optical signal detection speed is, and the better the performance of the optical signal detection device is.

[0109] For example, FIG5 is a schematic diagram of the second driving signal and the adjusted reflection angle provided in an embodiment of the present application. The second driving signal can be, for example, a continuous sinusoidal signal, wherein the two peaks of the sinusoidal signal are -Vm and +Vm. Accordingly, the adjusted reflection angle of the at least one optical reflective surface changes in the form of a sinusoidal signal, wherein the two peaks of the adjusted reflection angle are -θ M and +θ M As can be seen from FIG5 , the duration of the step of the second driving signal can be understood to be less than 1 ms or even infinitely close to 0.

[0110] In addition, similar to scenario A, the light reflecting unit 202 can also adjust the reflection angle of the at least one optical reflective surface around the first rotation axis based on the second driving signal. It will be understood that by rotating the optical reflective surface around the first rotation axis, the light reflecting unit 202 can achieve different reflection sources for the light beam received by the light receiving unit 204.

[0111] In the above-mentioned scenarios A and B, combined with what is shown in FIG2b , the first rotation axis can be an axis on the optical reflection surface that is perpendicular to the linear array direction of the optical transmission unit 201. Based on this first rotation axis, the optical reflection surface included in the optical reflection unit 202 can be rotated in the adjustment direction of the reflection angle as shown in FIG2b .

[0112] In addition, illustratively, after obtaining the power value of the optical signal of the optical receiving unit 204 at each moment, the processor included in the upper-layer device can determine which optical output port of the optical transmission unit 201 the optical signal received by the optical receiving unit 204 at the first moment originated from based on the one-to-one correspondence between the voltage and current values ​​of the drive signal and the optical output port included in the optical transmission unit 201. In this way, the power value of the optical signal and the optical output port can be associated, facilitating more accurate optical signal detection.

[0113] Exemplarily, the L signal values ​​of the first driving signal correspond one-to-one to the L optical output ports. Signal values ​​V6 and V7 shown in FIG4b may correspond to the leftmost optical output port and the rightmost optical output port of the optical transmission unit 201 in FIG2b.

[0114] The first moment can be any moment, and the voltage value and current value of the driving signal corresponding to the first moment can be obtained from the driving signal. It can be understood that the reflection angle of the light-emitting reflective unit 202 can be determined based on the voltage value and current value of the driving signal at the first moment, and based on the reflection principle and light reflection path of the light signal, it can be determined which optical output port of the optical transmission unit 201 will receive light from the light receiving unit 203 at this reflection angle of the light-emitting reflective unit 202.

[0115] (4) The optical receiving unit 204 is configured to receive the first optical signal or the second optical signal reflected from the optical reflecting unit 202, and convert the first optical signal into a first electrical signal, or convert the second optical signal into a second electrical signal. The first electrical signal can be applied to the first detection mode, and the second electrical signal can be applied to the second detection mode. For example, the first optical signal is an optical modulation signal, and the first electrical signal can be an electrical modulation signal. Accordingly, the first detection mode can be a modulation signal detection mode. The second optical signal is an optical power signal. Accordingly, the second detection mode can be an optical power signal detection mode.

[0116] For example, FIG6 is a schematic diagram of signal reception by the optical receiving unit 204 provided in an embodiment of the present application. In conjunction with 601, 602, and 603 shown in FIG6 , when the reflection angles of the optical reflecting unit 202 are different, the optical signals received by the optical receiving unit 204 originate from different output ports belonging to the optical transmission unit 201. As shown in 601 in FIG6 , the optical signal received by the optical receiving unit 204 originates from the optical output port on the far left of the optical transmission unit 201; as shown in 602 in FIG6 , the optical signal received by the optical receiving unit 204 originates from the optical output port in the middle of the optical transmission unit 201; and as shown in 603 in FIG6 , the optical signal received by the optical receiving unit 204 originates from the optical output port on the far right of the optical transmission unit 201.

[0117] For example, FIG7 is a schematic diagram of the hardware structure of the light receiving unit 204 shown in an embodiment of the present application.

[0118] The light receiving unit 204 includes at least one light detector 701 (only one light detector 701 is shown in FIG7 ); the at least one light detector 701 is configured to receive the first light signal or the second light signal reflected from the light reflecting unit.

[0119] Illustratively, the light detector 701 may include a photosensitive surface 701A, as shown in FIG8 a ; wherein the photosensitive surface 701A may be used to directly detect the light signal from the light reflecting unit 202 .

[0120] In another exemplary embodiment, the light detector 701 may include other optical components in addition to the photosensitive surface 701A. The other optical components may be a light-collecting lens 701B as shown in FIG8 b , which can be used to perform processing such as focusing, reflecting, or transmitting the light signal from the light reflecting unit 202 , thereby changing the transmission path of the light signal so that the photosensitive surface 701A can better and more efficiently detect the light signal from the light reflecting unit 202 .

[0121] Optionally, when the optical transmission unit 201 includes multiple optical output ports arranged in a linear array, the multiple optical detectors 701 can correspond one-to-one to the multiple optical output ports. In this way, the accuracy of optical signal reception can be improved by receiving optical signals through the multiple optical detectors 701.

[0122] Alternatively, when the optical transmission unit 201 includes multiple optical output ports arranged in a planar array, and the planar array includes M rows and N columns, the at least one optical detector 701 can correspond one-to-one with the optical output ports in the M rows, or one-to-one with the optical output ports in the N columns. In this way, receiving optical signals through multiple optical detectors 701 can improve the accuracy of optical signal reception. Furthermore, by assigning one optical detector to each row or column of optical output ports, hardware costs can be reduced.

[0123] The optical receiving unit 204 further includes at least one signal processing unit 702 (only one signal processing unit 702 is shown in FIG7 ); the at least one signal processing unit 702 is configured to convert the first optical signal into a first electrical signal, or convert the second optical signal into a second electrical signal. Exemplarily, the signal processing unit 702 can be implemented in hardware and / or software.

[0124] Optionally, Figure 9 is a structural diagram of a signal processing unit 702 provided in an embodiment of the present application. The signal processing unit 702 may include an integrated optical power signal reading unit 702A and a modulation signal reading unit 702B. Exemplarily, the optical power signal reading unit 702A can be used to read the optical signal, convert the optical signal into an electrical signal, and then read the optical power value. For example, the optical power signal reading unit 702A is an optical power meter, etc.; the modulation signal reading unit 702B can be used to read the modulated optical signal, convert the modulated optical signal into a modulated electrical signal, and then demodulate the modulated electrical signal to obtain the demodulated electrical signal. For example, the modulation signal reading unit 702B can be an integrated photoelectric converter and demodulator, etc. The modulation signal in the embodiment of the present application can be understood as an optical modulation signal before the optical signal undergoes photoelectric conversion, and can be understood as an electrical modulation signal after the optical signal undergoes photoelectric conversion.

[0125] Alternatively, the signal processing unit 702 may be implemented in software form, and when determining the first detection mode, it may determine to receive the first optical signal, and perform processes such as photoelectric conversion and demodulation; when determining the second detection mode, it may determine to receive the second optical signal, and perform processes such as reading the optical power value.

[0126] Alternatively, the optical receiving unit 204 may further include at least two independent signal processing units 702 , one signal processing unit 702 for receiving and processing the first optical signal, and the other signal processing unit 702 for receiving and processing the second optical signal.

[0127] In addition, it can be understood that at least one signal processing unit 702 can be integrated with at least one optical detector 701 to form an optical receiving unit 204; or, at least one signal processing unit 702 can also be a separate unit from at least one optical detector 701. This application does not limit the specific structure.

[0128] In conjunction with the first drive signal shown in Figure 4a, Figure 10a is a signal schematic diagram of the first optical signal / first electrical signal provided in an embodiment of the present application. In conjunction with the first drive signal shown in Figure 4b, Figure 10b is a signal schematic diagram of the first optical signal / first electrical signal provided in an embodiment of the present application. In conjunction with the second drive signal shown in Figure 5, Figure 11 is a signal schematic diagram of the second optical signal / second electrical signal provided in an embodiment of the present application. It can be seen from Figures 10a, 10b and 11 that based on the light reflecting unit 202 being driven by different drive signals and adjusting the reflection angle in different ways, it can be achieved that the light receiving unit 204 can receive different light signals.

[0129] In addition, it is also understandable that the optical signal detection device 106 may further include a processor, and the processor may be configured to perform optical signal detection in an optical power signal detection mode based on the optical power value read by the optical receiving unit 204; or the processor may be configured to perform optical signal detection in a modulation signal detection mode based on the demodulated electrical signal obtained by the optical receiving unit 204. In another exemplary embodiment, the optical signal detection device 106 may also transmit the obtained first electrical signal or second electrical signal to an upper-layer device; accordingly, the upper-layer device may perform optical signal detection based on the first electrical signal or the second electrical signal.

[0130] FIG12 is another hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application. Compared to the optical signal detection device 106 shown in FIG2b , the optical signal detection device 106 may further include: a first optical processing unit 1201 and a second optical processing unit 1202. The first optical processing unit 1201 is located between the optical transmission unit 201 and the optical reflection unit 202, and the second optical processing unit 1202 is located between the optical reflection unit 202 and the optical receiving unit 204;

[0131] (5) The first optical processing unit 1201 is used to converge, reflect, or transmit the optical signal from the optical transmission unit 201 to change the transmission path of the optical signal, so that the optical reflection unit 202 can more effectively reflect the optical signal from the optical transmission unit 201.

[0132] (6) The second optical processing unit 1202 is used to diverge, reflect or transmit the optical signal from the optical reflecting unit 202 to adjust the transmission path of the signal, so that the optical receiving unit 204 can perform more effective detection and processing on the optical signal from the optical reflecting unit 202.

[0133] Exemplarily, the first light processing unit 1201 and the second light processing unit 1202 can be implemented by at least one or a combination of but not limited to the following optical elements: a spherical lens as shown in FIG12 , or a cylindrical lens as shown in FIG13 below, or a beam splitter, or a reflector, etc.

[0134] Figure 13 is another hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application. Compared to the optical signal detection device 106 shown in Figure 12 , the first optical processing unit 1201 and the second optical processing unit 1202 may also be cylindrical lenses. This application does not limit the hardware structure of the first optical processing unit 1201 and the second optical processing unit 1202.

[0135] FIG14 is another hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application. Compared to the optical signal detection device 106 shown in FIG12 , as shown in FIG14 , the first optical processing unit 1201 and the second optical processing unit 1202 can be the same component. In this scenario, the optical transmission unit 201 and the optical receiving unit 204 can be located on the same side relative to the optical reflection unit 202, such as the same plane. The optical transmission unit 201 shown in FIG14 includes multiple output ports in a planar array format and multiple optical receiving units 204. Thus, by designing the relative positional relationship between the optical transmission unit 201, the optical receiving unit 204, and the optical reflection unit, the processing of the optical processing unit can be reduced, thereby reducing hardware costs and the size of the optical signal detection device 106. It is understood that the design described in FIG14 is also applicable to the scenario shown in FIG13 where the first optical processing unit 1201 and the second optical processing unit 1202 are cylindrical lenses, and will not be further described here.

[0136] Figure 15 is a schematic diagram of the reflection angle adjustment of the light reflecting unit 202 provided in an embodiment of the present application. The light reflecting unit 202 may include not only a first rotation axis, but also a second rotation axis, and the second rotation axis may be used to adjust the placement direction of the optical reflective surface included in the light reflecting unit 202. Exemplarily, the driving unit 203 may also be used to output a third driving signal. The light reflecting unit 202 is also used to receive the third driving signal and adjust the placement direction of the at least one optical reflective surface around the second rotation axis according to the third driving signal. In this way, by adjusting the placement direction of the optical reflective surface, the accuracy of the adjustment of the reflection angle by the light reflecting unit 202 around the first rotation axis in response to the drive of the driving unit 203 can be improved, thereby facilitating the light receiving unit 204 to more accurately receive the light signal reflected from the light reflecting unit. It is understandable that the light reflecting unit 202 may also include more rotation axes to achieve adjustment of the placement direction of the optical reflective surface, and this application does not limit this.

[0137] FIG16 is another hardware structure diagram of an optical signal detection device 106 provided in an embodiment of the present application. Compared with the optical signal detection device 106 shown in FIG2a or FIG2b or FIG12 or FIG14 or FIG13, the light reflection unit 202 may further include at least one feedback unit 1601.

[0138] (7) The feedback unit 1601 is configured to obtain an actual reflection angle of the optical reflective surface around the first rotation axis. The actual reflection angle can be used to determine which optical output port of the optical transmission unit 201 the optical signal received by the optical receiving unit 204 originates from. The multiple reflection angles of the optical reflective unit 202 correspond to the multiple optical output ports. Therefore, based on the actual reflection angle obtained by the feedback unit 1601, it is possible to determine which optical output port the optical signal originates from.

[0139] In addition, the processor included in the upper-layer device can determine, after obtaining the power value of the optical signal of the optical receiving unit 204 at each moment, based on the actual reflection angle and the corresponding relationship, which optical output port of the optical transmission unit 201 the optical signal received by the optical receiving unit 204 at the first moment comes from, thereby enabling more accurate detection of the optical signal.

[0140] Exemplarily, the L reflection angles correspond one-to-one to the L light output ports. As shown in FIG6 , the two maximum reflection angles of the light reflecting unit 202 may correspond to the leftmost and rightmost light output ports of the light transmitting unit 201; and the middle reflection angle of the light reflecting unit 202 may correspond to the middle light output port of the light transmitting unit 201.

[0141] The first moment may be any moment, and the actual reflection angle corresponding to the first moment may be obtained by the feedback unit 1601. It is understood that, based on the actual reflection angle of the light reflecting unit 202 at the first moment, and based on the reflection principle of the optical signal and the light reflection path, it is possible to determine which optical output port of the optical transmission unit 201 will receive light from the optical receiving unit 203 at this reflection angle of the light reflecting unit 202.

[0142] It should be noted that, in the description of this application, unless otherwise specified, "plurality" refers to two or more than two. Furthermore, " / " indicates that the objects associated with each other are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is merely a description of the association relationship between associated objects, indicating that three possible relationships can exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. A and B can be singular or plural. Furthermore, to facilitate the clear description of the technical solutions of the embodiments of this application, the embodiments of this application use terms such as "first" and "second" to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or order of execution, and do not necessarily define differences. It should also be noted that, unless otherwise specified, the specific description of certain technical features in one embodiment can also be used to explain the corresponding technical features mentioned in other embodiments.

[0143] It should be noted that the above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical signal detection device, characterized in that: It includes a driving unit, a light reflecting unit, and a light receiving unit; wherein the driving unit is connected to the light reflecting unit; The driving unit is configured to output a first driving signal in a first detection mode and a second driving signal in a second detection mode; the duration of a step of the first driving signal is greater than the duration of a step of the second driving signal; The light reflecting unit is configured to receive the first driving signal and adjust the reflection angle according to the first driving signal; or the light reflecting unit is configured to receive the second driving signal and adjust the reflection angle according to the second driving signal; The light receiving unit is used to receive a first light signal reflected from the light reflecting unit and convert the first light signal into a first electrical signal, and the first electrical signal is applied to the first detection mode; or to receive a second light signal reflected from the light reflecting unit, convert the second light signal into a second electrical signal, and the second electrical signal is applied to the second detection mode.

2. The device according to claim 1, characterized in that The first driving signal is a step signal including P values, where P is an integer greater than or equal to 2; The second driving signal is a continuous signal.

3. The device according to claim 1 or 2, characterized in that The duration of the step of the first driving signal is greater than or equal to 1 millisecond.

4. The device according to claim 2, characterized in that The light reflecting unit further includes an optical reflecting surface, The light reflecting unit is used to adjust the reflection angle according to the first driving signal, specifically to: adjust the reflection angle of the optical reflecting surface in a step-by-step or step-by-step manner according to the first driving signal; or The light reflecting unit is configured to adjust the reflection angle according to the second driving signal, and is specifically configured to continuously adjust the reflection angle of the optical reflecting surface according to the second driving signal.

5. The device according to claim 4, characterized in that The optical reflective surface is a micromirror with vertical electrostatic comb teeth, or a micromirror with an electromagnetic drive coil, or a reflective mirror surface driven by a voice coil motor or piezoelectric ceramics.

6. The device according to any one of claims 1 to 5, characterized in that The device further comprises: a first light processing unit and a second light processing unit; wherein, The first optical processing unit is configured to converge, reflect or transmit the optical signal; The light reflecting unit is further configured to reflect the light signal from the first light processing unit; The second light processing unit is configured to diverge, reflect or transmit the light signal reflected by the light reflecting unit.

7. The device according to claim 6, characterized in that The first light processing unit and the second light processing unit are the same component.

8. The device according to any one of claims 1 to 7, characterized in that The device further includes L optical output ports, the L optical output ports are arranged in an array, and L is an integer greater than or equal to 2; wherein, The L optical output ports are used to transmit optical signals to the optical reflection unit; The L signal values ​​of the first driving signal have a one-to-one correspondence with the L optical output ports; or the L signal values ​​of the second driving signal have a one-to-one correspondence with the L optical output ports.

9. The device according to any one of claims 1 to 8, characterized in that The device further includes L optical output ports and a feedback unit, wherein the L optical output ports are arranged in an array; wherein, The L optical output ports are used to transmit optical signals to the optical reflection unit; The feedback unit is used to obtain an actual reflection angle of the light reflecting unit, and the actual reflection angle is used by the light receiving unit to determine that the received light signal corresponds to the first light output port; wherein the L reflection angles have a one-to-one correspondence with the L light output ports, and the actual reflection angle is one of the L reflection angles.

10. The device according to any one of claims 1 to 9, characterized in that The light receiving unit includes at least one light detector; wherein, The at least one optical detector is configured to receive the first optical signal or the second optical signal reflected from the optical reflection unit.

11. The device according to claim 10, characterized in that The light receiving unit further includes at least one signal processing unit; wherein, The at least one signal processing unit is configured to convert the first optical signal into the first electrical signal, where the first electrical signal is a modulated signal; and further configured to perform demodulation processing on the first electrical signal; The at least one signal processing unit is further configured to convert the second optical signal into a second electrical signal, where the second electrical signal is a power signal; The at least one optical detector corresponds to the at least one signal processing unit in a one-to-one manner.

12. The device according to claim 10 or 11, characterized in that The device further includes L optical output ports arranged in a linear array; the at least one optical detector corresponds to the L optical output ports one by one; or, The device also includes L light output ports arranged in a planar array, the planar array includes M rows and N columns, and the at least one light detector corresponds one-to-one with the M rows of light output ports, or the at least one light detector corresponds one-to-one with the N columns of light output ports.

13. An optical device, characterized in that: The optical signal detection device, optical transmitter and / or optical receiver, and optical splitting unit are included in any one of claims 1 to 12; wherein, The optical transmitter is used for transmitting an optical signal from the optical device; The optical receiver is used for the optical device to receive optical signals; The optical splitting unit is configured to split the optical signal transmitted by the optical transmitter to obtain a split signal, or to split the optical signal received by the optical receiver to obtain a split signal; The optical signal detection device is used to receive the split signal from the splitting unit, and the split signal is used by the optical signal detection device to perform optical signal detection.

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