Optical module, optical chip, optical transceiver module and optical interconnection system

Abstract

The invention discloses an optical module, an optical chip, an optical transceiver module and an optical interconnection system, and belongs to the technical field of optical communication. The optical module comprises an optical power management module, the optical power management module is used for performing optical power control on first signal light input into the optical power management module and outputting second signal light after optical power control, and the optical power of the second signal light is stabilized at target power or within a target power range; the optical power management module at least comprises an optical power amplifier, an optical filter and a variable optical attenuator, and the first signal light is subjected to optical power control processing based on at least one of the optical power amplifier, the optical filter and the variable optical attenuator; wherein the optical power amplifier is used for performing optical power amplification processing on signal light input into the optical power amplifier; the optical filter is used for carrying out noise filtering processing on the signal light amplified by the optical power amplifier; and the variable optical attenuator is used for carrying out optical power attenuation processing on the signal light input into the variable optical attenuator.

Description

Technical Field

[0001] The present application relates to the field of optical communication technology, and in particular to an optical module, an optical chip, an optical transceiver module and an optical interconnection system. Background Art

[0002] In the optical communication industry, high-speed optical transceiver modules are one of the key components and are an indispensable part of realizing the rapid transmission of massive amounts of data within data centers. The modulator and detector in high-speed optical transceiver modules are the key to realizing the conversion of electro-optical signals and photoelectric signals respectively.

[0003] In the related technology, the modulator at the transmitting end is connected to the light source, and will convert the electrical signal into an optical signal and then directly output it to the outside. The output optical signal is directly transmitted to the detector at the receiving end through the optical fiber link. The detector converts the received optical signal into an electrical signal and continues to output it, thereby realizing optical communication transmission.

[0004] However, in actual applications, there are a variety of modulators in the entire optical communication network. Due to differences in technical design, manufacturer, light source, and optical path between different modulators, the output optical power values ​​corresponding to different modulators are also different. Therefore, the output optical power range of the modulator in the system is large, which puts high demands on the performance of the receiving end, resulting in a surge in costs. In addition, the receiving end needs to consider the extreme cases of excessive or insufficient received optical signal power, resulting in low sensitivity and performance waste at the receiving end.

[0005] In addition, in different application scenarios, the optical signal passes through different optical fiber transmission links. The optical fiber materials, optical fiber lengths and the number of optical connectors in different links are all different, resulting in different insertion loss ranges of optical fiber cables in different application scenarios. Different scenarios often require the design of different optical interconnection solutions, and the compatibility is poor. Summary of the invention

[0006] The embodiments of the present application provide an optical module, an optical chip, an optical transceiver module and an optical interconnection system, which can actively control and manage the optical power of the transmitted light of the optical transmitter and / or the received light of the optical receiver, so as to solve the technical problems mentioned in the background technology, such as the excessively large range of the modulator output optical power, the excessively high performance requirements for the receiving end, the low sensitivity and performance waste of the receiving end, and the poor compatibility of the optical interconnection solution.

[0007] According to one aspect of an embodiment of the present application, an optical module is provided, the optical module comprising an optical power management module, the optical power management module is used to perform optical power control on a first signal light input to the optical power management module, and output a second signal light after optical power control, wherein the optical power of the second signal light is stabilized within a target power or a target power range;

[0008] The optical power management module at least includes an optical power amplifier, an optical filter and an adjustable optical attenuator, and the first signal light is optically power controlled based on at least one of the optical power amplifier, the optical filter and the adjustable optical attenuator;

[0009] Wherein, the optical power amplifier is used to perform optical power amplification processing on the signal light input to the optical power amplifier;

[0010] The optical filter is used to perform noise filtering on the signal light after amplification by the optical power amplifier;

[0011] The adjustable optical attenuator is used to perform optical power attenuation processing on the signal light input into the adjustable optical attenuator.

[0012] Optionally, the optical module further includes a first electrode and a controller, the first electrode is respectively connected to the optical power amplifier and the adjustable optical attenuator, the controller is connected to the first electrode, and the controller controls the optical power amplifier and the adjustable optical attenuator through the first electrode.

[0013] Optionally, the optical module further includes an optical power sensor, the controller is connected to the optical power sensor, and the optical power sensor is used to detect the optical power of the target signal light;

[0014] Wherein, the target signal light is the first signal light or the second signal light.

[0015] Optionally, the optical power sensor is arranged at the optical output port of the optical power management module, and the target signal light is the second signal light; or,

[0016] The optical power sensor is arranged at the optical input port of the optical power management module, and the target signal light is the first signal light.

[0017] Optionally, the controller is configured to execute the following method:

[0018] When it is detected that the optical power of the target signal light is less than the optical power threshold, controlling the optical power amplifier to perform optical power amplification processing on the signal light input to the optical power amplifier;

[0019] When it is detected that the optical power of the target signal light is greater than the optical power threshold, the adjustable optical attenuator is controlled to perform optical power attenuation processing on the signal light input to the adjustable optical attenuator.

[0020] Optionally, the optical module further includes a wavelength detector, and the wavelength detector is used to detect the wavelength information of the signal light;

[0021] The controller is also connected to the optical filter, and is further used to control filtering of the optical filter according to the signal light wavelength information.

[0022] Optionally, the controller is configured to execute the following method:

[0023] Receiving the signal light wavelength information;

[0024] Determine wavelength offset information based on the signal light wavelength information;

[0025] The passband range of the optical filter is adjusted according to the wavelength shift information to control the optical filter to perform noise filtering on the signal light amplified by the optical power amplifier.

[0026] Optionally, the optical power amplifier is connected to the adjustable optical attenuator to form an optical power control channel, and the optical filter is connected to the optical power control channel after the output port of the optical power amplifier;

[0027] Among them, in the optical power control channel, the optical power amplifier, the optical filter and the adjustable optical attenuator are connected in sequence, or the optical power amplifier, the adjustable optical attenuator and the optical filter are connected in sequence, or the adjustable optical attenuator, the optical power amplifier and the optical filter are connected in sequence.

[0028] Optionally, the optical module further includes a gating switch, and the optical power amplifier and the adjustable optical attenuator are respectively connected to the gating switch;

[0029] The optical power amplifier is connected to the gate switch to form an optical power amplification channel, and the optical filter is connected to the optical power amplification channel after the output port of the optical power amplifier; the adjustable optical attenuator is connected to the gate switch to form an optical power attenuation channel;

[0030] The strobe switch is configured as:

[0031] When the optical power of the target signal light is less than the optical power threshold, the optical power amplification channel is turned on to allow the first signal light to enter the optical power amplification channel for the optical power amplification process and the noise filtering process;

[0032] When the optical power of the target signal light is greater than the optical power threshold, the optical power attenuation channel is turned on, so that the first signal light enters the optical power attenuation channel for the optical power attenuation process.

[0033] According to one aspect of an embodiment of the present application, there is provided an optical transmitter chip, the optical transmitter chip comprising an optical input port, a second electrode, a modulator, the optical module described in any one of the above items, and an optical output port;

[0034] Wherein, the optical input port is used to receive and transmit a third signal light to the modulator;

[0035] The modulator is connected to the second electrode, and the modulator is configured to modulate the third signal light according to the electrical signal transmitted by the second electrode, and output the first signal light carrying information;

[0036] The optical power management module is used to perform optical power control on the first signal light and output a second signal light after optical power control;

[0037] The optical output port outputs the second signal light.

[0038] According to one aspect of an embodiment of the present application, an optical receiver chip is provided, the optical receiver chip comprising an optical input port, the optical module described in any one of the above, a detector and a second electrode; wherein,

[0039] The optical input port is used to receive and transmit the first signal light to the optical module;

[0040] The optical power management module is used to perform optical power control on the first signal light, and output the second signal light after optical power control to the detector;

[0041] The detector converts the second signal light into a photocurrent carrying information, and outputs it to the outside through the second electrode.

[0042] According to one aspect of an embodiment of the present application, an optical transceiver module is provided, the optical transceiver module comprising the above optical transmitter chip, the above optical receiver chip, an optical signal processor, a transimpedance amplifier and a plurality of conductive contacts;

[0043] The plurality of conductive contacts are used to receive and transmit electrical signals from a host computer to the optical signal processor;

[0044] The optical signal processor processes the electrical signal of the host computer and transmits it to the optical transmitter chip;

[0045] The optical transmitter chip performs optical signal modulation and optical power control according to the input signal, and outputs it from the optical transceiver module;

[0046] The optical receiver chip is used to perform optical power control and photoelectric conversion processing on the optical signal received by the optical transceiver module, and then output a photocurrent carrying information to the transimpedance amplifier;

[0047] The transimpedance amplifier converts the photocurrent into an electrical signal and then outputs it.

[0048] Optionally, the optical signal processor is an optical digital signal processor or a laser driver chip;

[0049] In the case where the optical signal processor is the optical digital signal processor, the optical transceiver module also includes a microcontroller; the optical digital signal processor processes the electrical signal of the host computer and transmits it to the second electrode in the optical transmitter chip, the modulator performs optical signal modulation processing according to the electrical signal transmitted by the second electrode, and the modulated optical signal is output from the optical transceiver module after optical power control by the optical module; wherein the optical power amplifier and the adjustable optical attenuator in the optical transmitter chip are controlled based on the microcontroller; the optical power amplifier and the adjustable optical attenuator in the optical receiver chip are controlled based on the microcontroller or the transimpedance amplifier; the optical digital signal processor also performs equalization processing on the electrical signal output by the transimpedance amplifier and outputs it to the multiple conductive contacts;

[0050] In the case where the optical signal processor is a laser driver chip, the optical power amplifier and the adjustable optical attenuator in the optical transmitter chip are controlled based on the laser driver chip, or based on an independent microcontroller; the optical power amplifier and the adjustable optical attenuator in the optical receiver chip are controlled based on the transimpedance amplifier, or based on the independent microcontroller.

[0051] According to one aspect of an embodiment of the present application, an optical interconnection system is provided, the optical interconnection system comprising an optical transmitter, an optical fiber link and an optical receiver, the optical transmitter and the optical receiver being connected via the optical fiber link;

[0052] At least one of the optical transmitter, the optical fiber link and the optical receiver is provided with the optical module described in any one of the above items.

[0053] According to one aspect of an embodiment of the present application, a computer device is provided, comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the above-mentioned optical power control method.

[0054] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which at least one instruction, at least one program, a code set or an instruction set is stored, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the above-mentioned optical power control method.

[0055] According to one aspect of the embodiments of the present application, a computer program product is provided, the computer program product comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the above optical power control method.

[0056] The technical solution provided in the embodiments of the present application can bring the following beneficial effects:

[0057] By introducing the above optical power management module into the optical module, the optical power of the signal light can be amplified or attenuated based on the optical power amplifier or adjustable optical attenuator therein, so as to realize active management of the optical power of the input signal light, so that the optical power of the signal light output by the optical power management module can be stabilized within a target power or a target power range, thereby improving the consistency of the output signal light power, reducing the high requirements for the optical receiving performance and optical working range of the next device, and the next device does not need to consider the situation of receiving too large or too small extreme optical power, thus avoiding the performance waste of the next device, and at the same time, it can help the next device to improve the working sensitivity. In addition, the design of the above optical module can realize the function of active power management in the optical interconnection system, which can adapt to a variety of application scenarios with non-fixed optical fiber transmission distance and number of optical connectors, improve the compatibility of the optical interconnection system with a variety of scenarios, and greatly expand the application scenarios that can be applied to optical interconnection communication technology.

[0058] In addition, for the field of high-speed optical communications, the key performance indicators of high-speed optical interconnection systems are: sensitivity (the minimum optical power that can be detected under a given bit error rate) and bit error rate (this is the most critical indicator). After the optical power management module introduces the optical power amplifier, the optical power amplifier will not only amplify the signal light (for example, light with a wavelength of 1310nm), but also amplify the noise (for example, light with a wavelength other than 1310nm), resulting in a decrease in the signal-to-noise ratio. At this time, even if the optical power is relatively large (amplified by OA), the bit error rate also increases, which is equivalent to no improvement. In order to solve this problem, the optical power management module also introduces an optical filter and connects it after the optical power amplifier. After adding the optical filter, the noise amplified by the optical power amplifier can be filtered out, so that the signal light of the target wavelength can pass through, and the light other than the target wavelength can be reduced or avoided in the output signal light, thereby reducing or avoiding the degradation of the signal-to-noise ratio and reducing the bit error rate while ensuring that the signal light power is stable at the target power or a certain range. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0060] Figure 1 is a principle block diagram of an optical interconnection system provided by an embodiment of the present application;

[0061] Figure 2 The schematic diagram of the structure of an optical transmitter chip with an optical power management module is exemplarily shown;

[0062] Figure 3 The schematic diagram of the structure of an optical receiver chip with an optical power management module is exemplarily shown;

[0063] Figure 4 The schematic diagram of the structure of an optical transmission chip having a gating switch and an optical power management module is exemplarily shown;

[0064] Figure 5 The schematic diagram of the structural layout of a four-channel transmitter silicon photonic chip provided by an embodiment of the present application is exemplarily shown;

[0065] Figure 6 The schematic diagram of the structural layout of a four-channel receiver silicon photonic chip provided by an embodiment of the present application is exemplarily shown;

[0066] Figure 7 The structure diagram of an optical transceiver module based on an optical digital signal processing solution provided by an embodiment of the present application is exemplarily shown;

[0067] Figure 8 The structural diagram of a linear direct-drive optical transceiver module provided by an embodiment of the present application is exemplarily shown;

[0068] Fig. 9 A schematic diagram of an optical interconnection system in which both an optical transmitter and an optical receiver have active power control capabilities provided by an embodiment of the present application is exemplarily shown;

[0069] Fig.10 A schematic diagram of an optical interconnection system in which an optical transmitter has active power control capability provided by an embodiment of the present application is exemplarily shown;

[0070] Fig.11 A schematic diagram of an optical interconnection system in which an optical receiver has active power control capability provided by an embodiment of the present application is exemplified. DETAILED DESCRIPTION

[0071] The optical module, optical chip, optical transceiver module and optical interconnection system provided in the embodiments of the present application involve optical communication technology. Before introducing the embodiments of the optical module, optical chip, optical transceiver module and optical interconnection system provided in the present application, a brief introduction is first given to the application scenarios, related terms or nouns that may be involved in the embodiments of the present application to facilitate understanding and implementation by technical personnel in the field of the present application.

[0072] In the optical communication industry, high-speed optical transceiver modules are one of the key components, such as 400Gbps DR4, 400Gbps FR4, etc., which are an indispensable part of realizing the rapid transmission of massive data within the data center.

[0073] Optical transceiver modules often have the ability to both transmit (optical transmitter) and receive (optical receiver) data. Two optical transceiver modules are connected by optical fiber cables to form the most basic optical interconnection system, connecting the devices at both ends of the optical modules to achieve data interconnection.

[0074] For details, please refer to Figure 1 , Figure 1 It is a principle block diagram of an optical interconnection system provided by an embodiment of the present application. The optical transmitter includes an optical input port, a modulator, an optical output port, a low-speed electrode, and a high-speed signal electrode. Among them, the optical input port can be connected to a light source, and the light emitted by the light source enters the modulator. At the same time, the electrical signal is loaded onto the modulator through the high-speed signal electrode. The modulator modulates the light to convert the electrical signal into an optical signal, thereby outputting a signal light carrying information to the outside. The output optical signal is transmitted through an optical fiber link, during which it passes through an optical connector in the optical fiber link and is then transmitted to an optical receiver. The signal light enters the detector through the optical input port of the optical receiver, and the detector converts the signal light into a photocurrent carrying information, and outputs it through the high-speed signal electrode.

[0075] The modulator and detector in the above optical interconnection system are the key to realizing the conversion of electro-optical signals and optoelectronic signals respectively. How to design the output optical power of the modulator and the working range of the detector (received optical power) so that the entire optical interconnection system can work away from the sensitive point is the focus of ensuring the stable operation of the optical interconnection system.

[0076] The output optical power of the above modulator is determined by the optical power of the light source and the optical path loss. Due to the differences in the light source chip itself and the optical path, the output optical power values ​​of modulators designed with different schemes and manufactured by different manufacturers are different, and there is a power range. The output light of the optical transmitter enters the optical receiver after passing through the optical fiber cable. Therefore, the insertion loss of the optical fiber cable and the optical connector will also cause the power to drop. In addition, since the length of the optical fiber cable and the number of optical connectors are often not fixed, this will cause the loss of the optical fiber cable to have a range. In order to ensure the stable operation of the optical interconnection system, the receiver operating range (received optical power) is often required to be large enough to cover the output power range of the optical transmitter and the sum of the optical fiber cable loss. For details, please refer to the following relationship: Receiver operating range > transmitter optical output power range + optical fiber cable insertion loss range.

[0077] When the transmitter outputs high optical power and the optical fiber cable insertion loss is low, the optical signal power received by the receiver is high and in a "strong light" state. At this time, the detector needs to have good nonlinear suppression capabilities to obtain a low bit error rate; when the transmitter outputs low optical power and the optical fiber cable insertion loss is high, the optical signal power received by the receiver is low and in a "weak light" state. At this time, the detector needs to be able to suppress noise and improve the signal-to-noise ratio. Guaranteeing the performance of the above two extreme situations often leads to complex detector design, low sensitivity, and high cost.

[0078] In summary, Figure 1 The optical interconnection scheme used in the optical interconnection system shown in the figure has the following three main problems:

[0079] First, the transmitter output optical power range in the optical interconnection system is large, which places high performance requirements on the receiving end, resulting in a surge in costs.

[0080] Second, the compatibility with different application scenarios where the optical fiber length and the number of optical connectors are not fixed is poor. Different scenarios often require different optical interconnection solutions, and the development efficiency is low.

[0081] Third, the receiver needs to simultaneously consider extreme situations with lower occurrence rates, such as the “strong light” and “weak light” states mentioned above, which leads to complex receiver design, low sensitivity, high cost, and waste of performance.

[0082] In view of the above problems, the inventors of this application have found through research that the main reason leading to the above technical problems is Figure 1 The optical interconnection scheme shown lacks active management of the optical signal power of the transmitter and the receiver. Therefore, to solve the above technical problems, the present application provides an optical module, an optical transmitter chip, an optical receiver chip, an optical transceiver module, an optical interconnection system and a corresponding optical power control method.

[0083] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0084] An embodiment of the present application provides an optical module, which includes an optical power management module. The optical power management module is used to control the optical power of a first signal light input to the optical power management module and output a second signal light after optical power control. The optical power of the second signal light is stabilized within a target power or a target power range.

[0085] The optical power management module is an optical device or a combination of optical devices in the optical module that can control the signal light power.

[0086] The target power or target power range may be a reference target for the optical power management module to control the optical power. The target power range may be a power floating interval based on the target power. The embodiment of the present application does not limit the size of the target power or the target power range, and those skilled in the art may configure it according to the actual application scenario.

[0087] The optical power management module at least includes an optical power amplifier (OA), an optical filter and a variable optical attenuator (VOA). The first signal light is subjected to optical power control processing based on at least one of the optical power amplifier, the optical filter and the variable optical attenuator.

[0088] The optical power amplifier is used to amplify the optical power of the signal light input to the optical power amplifier; the optical filter is used to perform noise filtering on the signal light after amplification by the optical power amplifier; and the adjustable optical attenuator is used to attenuate the optical power of the signal light input to the adjustable optical attenuator.

[0089] By introducing the above optical power management module into the optical module, the optical power of the signal light can be amplified or attenuated based on the optical power amplifier or adjustable optical attenuator therein, so as to realize active management of the optical power of the input signal light, so that the optical power of the signal light output by the optical power management module can be stabilized within a target power or a target power range, thereby improving the consistency of the output signal light power, reducing the high requirements for the optical receiving performance and optical working range of the next device, and the next device does not need to consider the situation of receiving too large or too small extreme optical power, thus avoiding the performance waste of the next device, and at the same time, it can help the next device to improve the working sensitivity. In addition, the design of the above optical module can realize the function of active power management in the optical interconnection system, which can adapt to a variety of application scenarios with non-fixed optical fiber transmission distance and number of optical connectors, improve the compatibility of the optical interconnection system with a variety of scenarios, and greatly expand the application scenarios that can be applied to optical interconnection communication technology.

[0090] In addition, for the field of high-speed optical communications, the key performance indicators of high-speed optical interconnection systems are: sensitivity (the minimum optical power that can be detected under a given bit error rate) and bit error rate (this is the most critical indicator). After the optical power management module introduces the optical power amplifier, the optical power amplifier will not only amplify the signal light (for example, light with a wavelength of 1310nm), but also amplify the noise (for example, light with a wavelength other than 1310nm), resulting in a decrease in the signal-to-noise ratio. At this time, even if the optical power is relatively large (amplified by OA), the bit error rate also increases, which is equivalent to no improvement. In order to solve this problem, the optical power management module also introduces an optical filter and connects it after the optical power amplifier. After adding the optical filter, the noise amplified by the optical power amplifier can be filtered out, so that the signal light of the target wavelength can pass through, and the light other than the target wavelength can be reduced or avoided in the output signal light, thereby reducing or avoiding the degradation of the signal-to-noise ratio and reducing the bit error rate while ensuring that the signal light power is stable at the target power or a certain range.

[0091] The optical power amplifier and the adjustable optical attenuator may be connected in series or in parallel, which is not limited in the embodiments of the present application.

[0092] In a possible implementation manner, the optical power amplifier is connected to an adjustable optical attenuator to form an optical power control channel, and the optical filter is connected to the optical power control channel after the output port of the optical power amplifier.

[0093] Among them, in the optical power control channel, the optical power amplifier, the optical filter and the adjustable optical attenuator are connected in sequence, or the optical power amplifier, the adjustable optical attenuator and the optical filter are connected in sequence, or the adjustable optical attenuator, the optical power amplifier and the optical filter are connected in sequence. The embodiment of the present application does not limit the above connection order, and only needs to ensure that the optical filter is located after the optical power amplifier.

[0094] like Figure 2 As shown, it exemplarily shows a structural schematic diagram of an optical transmitter chip with an optical power management module, wherein an optical power amplifier, an optical filter and an adjustable optical attenuator are connected in sequence.

[0095] like Figure 3 As shown, it exemplarily shows a structural schematic diagram of an optical receiver chip with an optical power management module, wherein an adjustable optical attenuator, an optical power amplifier and an optical filter are connected in sequence.

[0096] The above-mentioned optical power amplifier and the adjustable optical attenuator are connected in series, which can simplify the connection complexity of the optical power control channel, and the optical power amplifier and the adjustable optical attenuator do not affect each other. When one of them performs optical power control, the other can perform no processing on the signal light, thereby achieving amplification or attenuation of the signal light, so that the output signal light is stabilized within the target power or target range.

[0097] In another possible implementation, the optical module further includes a gate switch, and the optical power amplifier and the adjustable optical attenuator are respectively connected to the gate switch.

[0098] The optical power amplifier is connected to the gate switch to form an optical power amplification channel, and the optical filter is connected to the optical power amplification channel after the output port of the optical power amplifier; the adjustable optical attenuator is connected to the gate switch to form an optical power attenuation channel.

[0099] like Figure 4 As shown, it exemplarily shows a structural schematic diagram of an optical transmission chip with a gate switch and an optical power management module. Among them, the optical power amplifier and the adjustable optical attenuator are connected in parallel to one side of the gate switch, the optical power amplifier is connected to the optical output port via an optical filter, and the adjustable optical attenuator is connected to the optical output port.

[0100] The above-mentioned gating switch can selectively conduct one of the optical power amplification channel and the optical power attenuation channel. Optionally, the gating switch is configured as:

[0101] When the optical power of the target signal light is less than the optical power threshold, the optical power amplification channel is turned on so that the first signal light enters the optical power amplification channel for optical power amplification processing and noise filtering processing. After the first signal light enters the off-power amplification channel, it first enters the off-power amplifier for amplification processing, and then enters the optical filter for noise filtering processing.

[0102] When the optical power of the target signal light is greater than the optical power threshold, the optical power attenuation channel is turned on, so that the first signal light enters the optical power attenuation channel for optical power attenuation processing.

[0103] Optionally, the conduction state of the above-mentioned selection switch can be controlled based on a controller, or can be implemented based on a circuit, which is not limited in the embodiment of the present application.

[0104] In the case where the conduction state of the gating switch is controlled by a controller, the controller is configured to perform the following optical power control method:

[0105] When the optical power of the target signal light is less than the optical power threshold, the gate switch is controlled to be in the first conduction state to conduct the optical power attenuation channel, so that the first signal light enters the optical power attenuation channel for optical power attenuation processing. At this time, although there is a physical connection between the optical power attenuation channel and the gate switch, the optical path between the two is in a disconnected state.

[0106] Accordingly, when the optical power of the target signal light is greater than the optical power threshold, the gate switch is controlled to be in the second conduction state, and the optical power attenuation channel is turned on, so that the first signal light enters the optical power attenuation channel for optical power attenuation processing. At this time, although there is a physical connection between the optical power amplification channel and the gate switch, the optical path between the two is in a disconnected state.

[0107] By connecting the optical power amplifier and the adjustable optical attenuator in parallel, the number of components that the signal light passes through can be reduced, and unnecessary optical path loss can be reduced. In addition, when one of the optical power amplifier and the adjustable optical attenuator is working, there is no need to deliberately prohibit the other from processing the light, so as to avoid mis-amplification or no attenuation of the signal light.

[0108] The above is an introduction to the connection relationship between the optical power amplifier and the adjustable optical attenuator. The following is an explanation of the control method of the optical power amplifier and the adjustable optical attenuator.

[0109] In a possible implementation, the optical module further includes a first electrode and a controller, the first electrode is respectively connected to the optical power amplifier and the adjustable optical attenuator, the controller is connected to the first electrode, and the controller controls the optical power amplifier and the adjustable optical attenuator through the first electrode.

[0110] The first electrode may be a low-speed electrode, such as Figure 2 , Figure 3 As shown, the optical power amplifier and the adjustable optical attenuator are respectively connected to the low-speed electrode, and the low-speed electrode can also be connected to the controller ( Figure 2 , Figure 3 The controller can send electrical signals to the optical power amplifier and the adjustable optical attenuator through the low-speed electrodes, thereby controlling the amplification factor of the optical power amplifier or the attenuation factor of the adjustable optical attenuator.

[0111] The optical module includes a controller and a first electrode, which can realize autonomous configuration of optical power control logic in the optical module without the need for an additional controller, thereby improving the integration and ease of use of the optical module.

[0112] In a possible implementation, the optical module further includes an optical power sensor, the controller is connected to the optical power sensor, and the optical power sensor is used to detect the optical power of the target signal light; wherein the target signal light is the first signal light or the second signal light.

[0113] Optionally, the optical power sensor may be a monitor diode (MPD). The optical power sensor may transmit the detected optical power of the target signal light to the controller, and the controller may compare the detected optical power with an optical power threshold, thereby controlling the optical power amplifier and the adjustable optical attenuator through the low-speed electrode.

[0114] By adding an optical power sensor to the optical module, the optical module can autonomously detect the optical power of the input or output light of the optical power management module, and autonomously decide whether to amplify or attenuate the signal light.

[0115] In a possible implementation manner, the controller is configured to execute an optical power control method provided in an embodiment of the present application, including:

[0116] When it is detected that the optical power of the target signal light is less than the optical power threshold, the optical power amplifier is controlled to perform optical power amplification processing on the signal light input to the optical power amplifier. The optical power threshold here can be the target power mentioned above, or it can be the lower limit value in the target power range mentioned above. The embodiment of the present application does not limit the size of the optical power threshold.

[0117] When it is detected that the optical power of the target signal light is greater than the optical power threshold, the adjustable optical attenuator is controlled to perform optical power attenuation processing on the signal light input to the adjustable optical attenuator. The optical power threshold here can be the target power mentioned above, or it can be the upper limit value in the target power range mentioned above. The embodiment of the present application does not limit the size of the optical power threshold.

[0118] The controller can control the optical power amplifier through the low-speed electrode to adjust its amplification factor, thereby increasing the optical power of the signal light to the target power or within the target power range.

[0119] Similarly, the controller can also control the adjustable optical attenuator through the low-speed electrode to adjust its attenuation factor, thereby attenuating the output optical power to the target power or within the target power range.

[0120] By configuring the controller to execute the above method, the optical module can be directly used in an optical chip, an optical transceiver module or an optical interconnection system to perform active optical power control management, thereby reducing the difficulty of development and eliminating the need to perform redundant logic configuration work.

[0121] In a possible implementation, the optical power sensor is disposed at the optical output port of the optical power management module, and the target signal light is the second signal light. In the case where the optical power sensor is disposed at the optical output port, feedback adjustment can be performed on the optical power control of the optical power management module to ensure that the output optical power remains within the target power or within the target power range, and feedback adjustment is easier to implement.

[0122] Alternatively, the optical power sensor is disposed at the optical input port of the optical power management module, and the target signal light is the first signal light. In this way, the optical power of the input signal light can also be detected before the optical power management module performs optical power control to adjust the optical power amplification factor or optical power attenuation factor.

[0123] In the optical module provided in the present application, the optical filter can be a passive filter or an active filter. For a passive filter, its passband range can be a pre-selected passband range, which can cover the maximum variation range of the effective signal light wavelength, thereby filtering out the optical noise outside the wavelength range from the optical path.

[0124] The following takes the optical filter as an active filter as an example to introduce the control method of the optical filter.

[0125] In a possible implementation, the optical module further includes a wavelength detector, which is used to detect the wavelength information of the signal light; the wavelength information of the signal light is used to characterize the wavelength of the signal light actively detected by the wavelength detector. The embodiment of the present application does not limit the location of the wavelength detector, and those skilled in the art can select the configuration in the optical module according to the actual application scenario.

[0126] The controller is also connected to the optical filter, and is also used to control the filtering of the optical filter according to the signal light wavelength information.

[0127] Accordingly, the controller is configured to perform the following optical power control method:

[0128] Receive signal light wavelength information;

[0129] determining wavelength shift information based on the signal light wavelength information;

[0130] The passband range of the optical filter is adjusted according to the wavelength shift information to control the optical filter to perform noise filtering on the signal light amplified by the optical power amplifier.

[0131] For active filters, noise can be filtered out more accurately under the control of a controller, but the wavelength needs to be actively measured (because the wavelength of the optical signal will change with changes in temperature or environment in actual work), and then the passband range of the filter is controlled according to the wavelength drift, that is, the wavelength offset information, so as to more accurately filter out the noise in the amplified signal light, reduce or avoid the degradation of the signal-to-noise ratio, and reduce the bit error rate.

[0132] The above parts are multiple embodiments of the optical module provided by the embodiments of the present application. The embodiments of the present application also provide an optical transmitter chip and an optical receiver chip including the above optical module.

[0133] For more information about optical transmitter chips, please refer to Figure 2 The optical transmitter chip includes an optical input port, a second electrode, a modulator, an optical module provided by any of the above embodiments, and an optical output port. Optionally, the optical transmitter chip is a silicon photonic chip, which is suitable for the field of high-speed optical communications.

[0134] The optical input port is used to receive and transmit a third signal light to the modulator; the third signal light may be light emitted by a light source, which may be an integrated light source on the optical transmitter chip or an external light source. The light emitted by the light source may enter the modulator in the optical transmitter chip through the optical input port.

[0135] The modulator is connected to the second electrode, and the modulator is configured to modulate the third signal light according to the electrical signal transmitted by the second electrode, and output the first signal light carrying information. The second electrode may be Figure 2 The high-speed signal electrode shown in the figure, the electrical signal is loaded onto the modulator through the high-speed signal electrode, the modulator performs electrical-optical conversion according to the electrical signal, modulates the light, and outputs the first signal light carrying the information. Subsequently, the signal light is transmitted to the optical power management module.

[0136] The optical power management module is used to control the optical power of the first signal light and output the second signal light after the optical power control; wherein the first signal light is subjected to optical power amplification processing or attenuation processing by the optical power amplifier and the adjustable optical attenuator (the order of the two can be reversed) in the optical power management module, and is filtered by the optical filter, and the second signal light is output through the optical output port.

[0137] Among them, the optical power amplifier OA has the function of optical power amplification, and the adjustable attenuator VOA realizes the ability to adjust the optical power attenuation to any value. Optionally, an optical power sensor MPD for monitoring the output optical power is provided at the optical output port. The output optical power can be monitored by collecting the photocurrent value of MPD. If the output optical power is lower than the preset value, the amplification factor of OA can be adjusted to increase the output optical power to the preset value, such as the above-mentioned target power or within the target power range. If the output optical power is lower than the preset value, VOA can be adjusted to attenuate the output optical power to the preset value to achieve stable output optical power.

[0138] Optionally, for detectors with high light damage resistance, the optical amplifier OA can be placed before the modulator, that is, the optical power can be amplified before entering the modulator, which can also achieve similar functions and is also within the scope of protection requested by the present application.

[0139] By introducing the adjustable optical attenuator VOA, optical power amplifier OA and optical filter into the optical transmitter chip, the modulator output optical power is actively controlled, which improves the consistency of the output optical power, greatly reduces the high requirements on the receiving end, reduces or avoids the degradation of the signal-to-noise ratio, and reduces the bit error rate.

[0140] The optical transmitter chip can output one signal light or multiple signal lights. In the case of outputting multiple signal lights, the optical transmitter chip has multiple optical output channels, each of which includes a modulator, an optical module, and an optical input port. The modulator of each optical output channel is respectively connected to the corresponding high-speed signal electrode. Each optical output channel can be connected to an optical input line respectively, and these optical input lines can share the same optical input port or be connected to different optical input ports respectively. The embodiment of the present application does not limit this.

[0141] like Figure 5As shown, it exemplarily shows a schematic diagram of the structural layout of a four-channel transmitter silicon photonic chip provided by an embodiment of the present application. This embodiment is an external light source type, which includes an optical input port, an optical output port, a modulator unit, an optical amplifier OA, an optical filter, an adjustable optical attenuator VOA, and high-speed and low-speed electrodes. The light emitted by the external light source enters the silicon photonic chip through the optical input port, and is divided into four light paths through the beam splitter, and enters channel 1 (Ch1), channel 2 (Ch2), channel 3 (Ch3) and channel 4 (Ch4) respectively. The high-speed electrical signal enters the silicon photonic chip through the high-speed electrode and is loaded on the modulator to modulate the light of the four channels respectively. The output signal light then enters the optical amplifier OA and the adjustable optical attenuator VOA. Both OA and VOA are connected to the low-speed electrodes, and the external control circuit controls both through the low-speed electrodes. Finally, 4 signal lights carrying different information are transmitted outward simultaneously via 4 optical output ports.

[0142] Optionally

[0143] For more information about optical receiver chips, please refer to Figure 3 The optical receiver chip includes an optical input port, an optical module provided in any of the above embodiments, a detector and a second electrode. Optionally, the optical transmitter chip is a silicon photonic chip, which is suitable for the field of high-speed optical communication.

[0144] The optical input port is used to receive and transmit the first signal light to the optical module; in the embodiment of the optical receiver chip, the first signal light can be the signal light emitted by the optical transmitter, which is transmitted in the optical fiber, enters the silicon photonic chip through the optical input port of the optical receiver chip, and passes through the optical power management module. The optical power amplifier, adjustable optical attenuator, and optical filter in the optical power management module can also be placed in the optical receiver chip, or exist in both the optical transmitter and the optical receiver, which is not limited in the embodiment of the present application.

[0145] The optical power management module is used to control the optical power of the first signal light and output the second signal light after optical power control to the detector; after the first signal light enters the silicon photonic chip through the optical input port, it passes through the adjustable optical attenuator VOA, OA and optical filter (or OA, VOA and optical filter) in sequence for optical power control, and enters the detector after the optical power is stabilized at the target power or target power range.

[0146] The detector converts the second signal light into a photocurrent carrying information and outputs it to the outside through the second electrode. The second electrode can be Figure 3 A high-speed signal electrode connected to a detector is shown.

[0147] Optionally, a detector (as an optical power sensor) can be used to monitor the incident optical power value, or an MPD can be set before the detector to implement the optical power monitoring function. When the optical power value of the signal light is detected to be lower than a preset value, the OA can be controlled by the low-speed electrode to amplify the signal light; when the optical power of the signal light is detected to be higher than the preset value, the VOA can be controlled by the low-speed electrode to attenuate the signal light, and finally the optical power value received by the detector is stabilized at a certain value or range.

[0148] The solution provided in this embodiment introduces an adjustable optical attenuator, an optical power amplifier and an optical filter in the receiver, so that the optical signal power can be managed before the signal light enters the detector photoelectric conversion chip, so that the detector does not need to consider the extreme conditions mentioned above, avoiding performance waste, while improving sensitivity, reducing or avoiding signal-to-noise ratio degradation, and reducing bit error rate. In addition, due to the active optical power management function in the transmitter or receiver, the compatibility is improved, and the optical interconnection scenarios to which this technical solution can be applied are greatly expanded.

[0149] The optical receiver chip can receive one signal light or multiple signal lights at the same time. When receiving multiple signal lights at the same time, the optical receiver chip has multiple light receiving channels, each of which includes an optical module, a detector and a high-speed signal electrode.

[0150] like Figure 6 As shown, it exemplarily shows a schematic diagram of the structural layout of a four-channel receiver silicon photonic chip provided by an embodiment of the present application. This embodiment includes an optical input port, an adjustable optical attenuator VOA, an optical amplifier OA, an optical filter, a detector, and high-speed and low-speed electrodes. The optical signal enters the silicon photonic chip through the optical input port, and then enters the VOA and OA, which are connected to the external control circuit (chip) via low-speed electrodes, adjust the input optical signal power, and then filter it through the optical filter to ensure that the optical power entering the detector is within a preset value or preset range, and the signal-to-noise ratio is excellent. The detector converts the optical signal into a photocurrent and transmits it to the next level through a high-speed electrode, such as a TIA (Trans Impendance Amplifier) ​​chip.

[0151] The above parts are multiple embodiments of optical transmitter chips and optical receiver chips provided by the embodiments of the present application. The silicon photonic chip solutions provided by the above embodiments can be used to construct an optical transceiver module. Therefore, the embodiments of the present application also provide an optical transceiver module including the above optical transmitter chip and optical receiver chip.

[0152] The optical transceiver module comprises an optical transmitter chip as claimed in claim 10, an optical receiver chip as claimed in claim 11, an optical signal processor, a transimpedance amplifier and a plurality of conductive contacts.

[0153] Among them, the multiple conductive contacts are used to receive and transmit electrical signals from the host computer to the optical signal processor. Optionally, the host computer is an information sending device such as a switch or a server. The electrical signal of the host computer can enter the optical transceiver module through the above-mentioned multiple conductive contacts (commonly known as gold fingers), and then enter the optical signal processor.

[0154] The optical signal processor processes the electrical signal of the host computer and transmits it to the optical transmitter chip. The optical signal processor may process the electrical signal of the host computer by equalization, amplification and other signal processing. The processed electrical signal may enter the optical transmitter chip through the line of the printed circuit board (PCB) in the optical transceiver module.

[0155] The optical transmitter chip modulates the optical signal and controls the optical power according to the input signal, and outputs it from the optical transceiver module. The electrical signal entering the optical transmitter chip is loaded onto the modulator through the high-speed signal electrode of the optical transmitter to achieve signal modulation of the input light.

[0156] The optical receiver chip is used to perform optical power control and photoelectric conversion on the optical signal received by the optical transceiver module, and then output the photocurrent carrying information to the transimpedance amplifier.

[0157] The transimpedance amplifier converts the photocurrent into an electrical signal for output.

[0158] Optionally, the optical signal processor is an optical digital signal processor (oDSP) or a laser driver chip.

[0159] In a possible implementation, the optical signal processor is an optical digital signal processor; accordingly, when the optical signal processor is an optical digital signal processor, the optical transceiver module further includes a microcontroller.

[0160] The optical digital signal processor processes the electrical signal of the host computer and transmits it to the second electrode in the optical transmitter chip. The modulator performs optical signal modulation processing according to the electrical signal transmitted by the second electrode. The modulated optical signal is output from the optical transceiver module after optical power control by the optical module. The optical power amplifier and the adjustable optical attenuator in the optical transmitter chip are controlled based on a microcontroller; the optical power amplifier and the adjustable optical attenuator in the optical receiver chip are controlled based on a microcontroller or a transimpedance amplifier; the optical digital signal processor also performs equalization processing on the electrical signal output by the transimpedance amplifier and outputs it to multiple conductive contacts.

[0161] like Figure 7 As shown, it exemplarily shows a structural schematic diagram of an optical transceiver module based on an optical digital signal processing solution provided by an embodiment of the present application. The electrical signal of the host computer (such as a switch or server, etc.) enters the optical transceiver module through multiple conductive contacts, and then enters the optical digital signal processor (oDSP). After equalization, amplification and other signal processing, it enters the transmitter silicon photonic chip SiPho-Tx (SiPho refers to SiPhotonics silicon photonics) through the line on the printed circuit board of the optical transceiver module, and is loaded onto the modulator through the high-speed signal electrode of the silicon photonic chip to realize signal modulation of the input light. The power management function of the transmitter silicon photonic chip is controlled by the microcontroller (Micro Control Unit, MCU) chip of the optical transceiver module. The signal light that has undergone active power management enters the optical fiber from the silicon photonic chip and is output through the optical port of the optical transceiver module.

[0162] The optical signal received by the optical transceiver module enters the receiver silicon photonic chip SiPho-Rx through the internal optical fiber of the module. The detector converts the optical signal into a photocurrent carrying information, and outputs it to the transimpedance amplifier TIA chip through the high-speed signal electrode. The TIA chip amplifies the photocurrent and converts it into a voltage signal and transmits it to the oDSP. After being equalized by the oDSP, it is output and transmitted to the host computer from multiple conductive contacts of the optical module. It is worth mentioning that the VOA and OA of the receiver silicon photonic chip can also be controlled by the MCU.

[0163] In another possible implementation, the optical transceiver module may be a linear direct-drive optical transceiver module, and correspondingly, the optical signal processor is a laser driver chip.

[0164] When the optical signal processor is a laser driver chip, the optical power amplifier and the adjustable optical attenuator in the optical transmitter chip are controlled based on the laser driver chip, or based on an independent microcontroller; the optical power amplifier and the adjustable optical attenuator in the optical receiver chip are controlled based on a transimpedance amplifier, or based on an independent microcontroller.

[0165] like Figure 8 As shown, it exemplarily shows a schematic diagram of the structure of a linear direct-drive optical transceiver module provided by an embodiment of the present application. For a linear direct-drive optical transceiver module, after the oDSP is cancelled, the transmitter requires a separate laser driver (Driver) chip, and the VOA and OA of the optical transmitter chip SiPho-Tx can be controlled by the Driver chip or by the MCU. Similarly, the VOA and OA of the optical receiver silicon photonic chip can be controlled by the transimpedance amplifier TIA chip or by a separate MCU.

[0166] The optical module or optical transceiver module can be used to build an optical interconnection system with active power control capability. Therefore, the embodiment of the present application also provides an optical interconnection system provided with the optical module, the optical interconnection system includes an optical transmitter, an optical fiber link and an optical receiver, and the optical transmitter and the optical receiver are connected via an optical fiber link;

[0167] Wherein, at least one of the optical transmitter, the optical fiber link and the optical receiver is provided with an optical module as provided in any of the above embodiments.

[0168] In one possible implementation, please refer to Fig. 9 , which exemplarily shows a schematic diagram of an optical interconnection system provided by an embodiment of the present application, in which both the optical transmitter and the optical receiver have active power control capabilities. Fig. 9 As shown, the optical transmitter and the optical receiver are both provided with the optical power management module, and both have active control capabilities. For different light source solutions and packaging solutions, after the optical transmitter is provided with the optical power management module, the output optical power of the optical transmitter can be stabilized at a preset value or a preset range to ensure the consistency of the output optical power, which will make the optical transmitter more compatible with chip solutions and packaging solutions, improve production and production yield, and reduce product costs.

[0169] In actual operation, due to the influence of environmental dust, vibration, etc., the loss of optical fiber links often increases, causing the optical power received by the receiver to exceed the sensitivity point, resulting in an increase in the bit error rate of optical interconnection and affecting data transmission. At this time, the active power control capability of the receiver can be used to compensate for the additional optical power attenuation, so that the optical power actually received by the detector is still within the optimal working range, indirectly improving sensitivity and ensuring stable data transmission.

[0170] In another possible implementation, please refer to Fig.10 , which exemplarily shows a schematic diagram of an optical interconnection system in which an optical transmitter has active power control capability provided by an embodiment of the present application. Fig.10 As shown, the above optical transmitter is provided with the above optical power management module. The optical transmitter outputs an optical signal for transmission in the optical fiber link. The reasons for the continuous decrease in optical power include the transmission loss of the optical fiber itself and the loss of the optical connector, and the decrease is greater with the increase of the transmission distance and the number of optical connectors. For some scenarios such as structured cabling, since the transmission distance range and the number of optical connectors are foreseeable, the overall loss of the optical fiber link and the optical connector can be predicted to a certain extent. By pre-raising the output optical power value in the transmitter for compensation, the optical receiver end does not need to set the above optical power management module, thereby reducing the deployment cost of the optical interconnection system in some structured cabling scenarios.

[0171] In another possible implementation, please refer to Fig.11 , which exemplarily shows a schematic diagram of an optical interconnection system in which an optical receiver has active power control capability provided by an embodiment of the present application. Fig.11 As shown, the above-mentioned optical receiver is provided with the above-mentioned optical power management module, which can actively control the optical power of the received signal light and compensate for the additional optical power attenuation, so that the optical power actually received by the detector is still within the optimal working range, indirectly improving the sensitivity and ensuring stable data transmission.

[0172] compared to Fig. 9 , Fig.10 and Fig.11 The optical interconnection solution shown has slightly weaker adaptability because it only has active power control capability at one end, but it has relative cost advantages.

[0173] The above optical module can also be placed in the optical fiber link as an additional independent device, so that the optical amplifier OA, the variable optical attenuator VOA, and the optical filter can be placed in the optical fiber link, and active management of the optical signal power can also be achieved.

[0174] Overall, this application proposes an optical module, an optical transmitter chip, an optical receiver chip, an optical transceiver module, and an optical interconnection system solution. By actively managing the power of optical signals, the consistency of the transmitter output or the detector received optical power is improved, the difficulty of receiver design is reduced, and the compatibility is enhanced. It has the advantages of high sensitivity and high robustness, and can be used in high-speed optical interconnection scenarios in data centers, as well as more and more complex optical interconnection scenarios.

[0175] In an exemplary embodiment, the present application provides a computer device, which includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the above-mentioned optical power control method.

[0176] In an exemplary embodiment, the present application also provides a computer-readable storage medium, wherein the storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set, when executed by a processor, implements the above-mentioned optical power control method.

[0177] Optionally, the computer readable storage medium may include: ROM (Read Only Memory), RAM (Random Access Memory), SSD (Solid State Drives) or optical disks, etc. Among them, the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0178] In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or the computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the above optical power control method.

[0179] It should be understood that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. In addition, the step numbers described in this article only illustrate a possible execution sequence between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order to the diagram. The embodiments of the present application are not limited to this.

[0180] Figure 1-4 In 9-11, the dotted connecting line part is the electrical signal transmission path, and the solid connecting line part is the optical signal transmission path.

[0181] In addition, in the specific implementation of this application, related data such as user information is involved. When the above embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions.

[0182] The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An optical module, characterized in that: The optical module includes an optical power management module, which is used to perform optical power control on a first signal light input to the optical power management module and output a second signal light after optical power control, wherein the optical power of the second signal light is stabilized within a target power or a target power range; The optical power management module at least includes an optical power amplifier, an optical filter and an adjustable optical attenuator, and the first signal light is optically power controlled based on at least one of the optical power amplifier, the optical filter and the adjustable optical attenuator; Wherein, the optical power amplifier is used to perform optical power amplification processing on the signal light input to the optical power amplifier; The optical filter is used to perform noise filtering on the signal light after amplification by the optical power amplifier; The adjustable optical attenuator is used to perform optical power attenuation processing on the signal light input into the adjustable optical attenuator.

2. The optical module according to claim 1, characterized in that: The optical module further includes a first electrode and a controller, wherein the first electrode is connected to the optical power amplifier and the adjustable optical attenuator respectively, and the controller is connected to the first electrode, and the controller controls the optical power amplifier and the adjustable optical attenuator through the first electrode.

3. The optical module according to claim 2, characterized in that: The optical module further includes an optical power sensor, the controller is connected to the optical power sensor, and the optical power sensor is used to detect the optical power of the target signal light; Wherein, the target signal light is the first signal light or the second signal light.

4. The optical module according to claim 3, characterized in that: The optical power sensor is arranged at the optical output port of the optical power management module, and the target signal light is the second signal light; or, The optical power sensor is arranged at the optical input port of the optical power management module, and the target signal light is the first signal light.

5. The optical module according to claim 3, characterized in that: The controller is configured to perform the following method: When it is detected that the optical power of the target signal light is less than the optical power threshold, controlling the optical power amplifier to perform optical power amplification processing on the signal light input to the optical power amplifier; When it is detected that the optical power of the target signal light is greater than the optical power threshold, the adjustable optical attenuator is controlled to perform optical power attenuation processing on the signal light input to the adjustable optical attenuator.

6. The optical module according to claim 2, characterized in that: The optical module also includes a wavelength detector, which is used to detect the wavelength information of the signal light; The controller is also connected to the optical filter, and is further used to control filtering of the optical filter according to the signal light wavelength information.

7. The optical module according to claim 6, characterized in that: The controller is configured to perform the following method: receiving the signal light wavelength information; Determine wavelength offset information based on the signal light wavelength information; The passband range of the optical filter is adjusted according to the wavelength shift information to control the optical filter to perform noise filtering on the signal light amplified by the optical power amplifier.

8. The optical module according to any one of claims 1 to 7, characterized in that: The optical power amplifier is connected to the adjustable optical attenuator to form an optical power control channel, and the optical filter is connected to the optical power control channel after the output port of the optical power amplifier; Among them, in the optical power control channel, the optical power amplifier, the optical filter and the adjustable optical attenuator are connected in sequence, or the optical power amplifier, the adjustable optical attenuator and the optical filter are connected in sequence, or the adjustable optical attenuator, the optical power amplifier and the optical filter are connected in sequence.

9. The optical module according to any one of claims 1 to 7, characterized in that: The optical module further includes a gating switch, and the optical power amplifier and the adjustable optical attenuator are respectively connected to the gating switch; The optical power amplifier is connected to the gate switch to form an optical power amplification channel, and the optical filter is connected to the optical power amplification channel after the output port of the optical power amplifier; the adjustable optical attenuator is connected to the gate switch to form an optical power attenuation channel; The strobe switch is configured as: When the optical power of the target signal light is less than the optical power threshold, the optical power amplification channel is turned on to allow the first signal light to enter the optical power amplification channel for the optical power amplification process and the noise filtering process; When the optical power of the target signal light is greater than the optical power threshold, the optical power attenuation channel is turned on, so that the first signal light enters the optical power attenuation channel for the optical power attenuation process.

10. An optical transmitter chip, characterized in that: The optical transmitter chip comprises an optical input port, a second electrode, a modulator, an optical module as claimed in any one of claims 1 to 9, and an optical output port; Wherein, the optical input port is used to receive and transmit a third signal light to the modulator; The modulator is connected to the second electrode, and the modulator is configured to modulate the third signal light according to the electrical signal transmitted by the second electrode, and output the first signal light carrying information; The optical power management module is used to perform optical power control on the first signal light and output a second signal light after optical power control; The optical output port outputs the second signal light.

11. An optical receiver chip, characterized in that: The optical receiver chip comprises an optical input port, an optical module as claimed in any one of claims 1 to 9, a detector and a second electrode; wherein, The optical input port is used to receive and transmit the first signal light to the optical module; The optical power management module is used to perform optical power control on the first signal light, and output the second signal light after optical power control to the detector; The detector converts the second signal light into a photocurrent carrying information, and outputs it to the outside through the second electrode.

12. An optical transceiver module, characterized in that: The optical transceiver module comprises the optical transmitter chip as claimed in claim 10, the optical receiver chip as claimed in claim 11, an optical signal processor, a transimpedance amplifier and a plurality of conductive contacts; The plurality of conductive contacts are used to receive and transmit electrical signals from a host computer to the optical signal processor; The optical signal processor processes the electrical signal of the host computer and transmits it to the optical transmitter chip; The optical transmitter chip performs optical signal modulation and optical power control according to the input signal, and outputs it from the optical transceiver module; The optical receiver chip is used to perform optical power control and photoelectric conversion processing on the optical signal received by the optical transceiver module, and then output a photocurrent carrying information to the transimpedance amplifier; The transimpedance amplifier converts the photocurrent into an electrical signal and then outputs it.

13. The optical transceiver module according to claim 12, characterized in that: The optical signal processor is an optical digital signal processor or a laser driver chip; In the case where the optical signal processor is the optical digital signal processor, the optical transceiver module also includes a microcontroller; the optical digital signal processor processes the electrical signal of the host computer and transmits it to the second electrode in the optical transmitter chip, the modulator performs optical signal modulation processing according to the electrical signal transmitted by the second electrode, and the modulated optical signal is output from the optical transceiver module after optical power control by the optical module; wherein the optical power amplifier and the adjustable optical attenuator in the optical transmitter chip are controlled based on the microcontroller; the optical power amplifier and the adjustable optical attenuator in the optical receiver chip are controlled based on the microcontroller or the transimpedance amplifier; the optical digital signal processor also performs equalization processing on the electrical signal output by the transimpedance amplifier and outputs it to the multiple conductive contacts; In the case where the optical signal processor is a laser driver chip, the optical power amplifier and the adjustable optical attenuator in the optical transmitter chip are controlled based on the laser driver chip, or based on an independent microcontroller; the optical power amplifier and the adjustable optical attenuator in the optical receiver chip are controlled based on the transimpedance amplifier, or based on the independent microcontroller.

14. An optical interconnection system, characterized in that: The optical interconnection system comprises an optical transmitter, an optical fiber link and an optical receiver, wherein the optical transmitter and the optical receiver are connected via the optical fiber link; At least one of the optical transmitter, the optical fiber link and the optical receiver is provided with the optical module according to any one of claims 1 to 9.

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