Optical receiving device, optical module, and signal amplification device

Abstract

The invention provides an optical receiving device, an optical assembly and a signal amplification device, which can be applied to a fiber to room (FTTR) scene. Wherein a signal amplification device in the light receiving device can be connected with two power supplies, and a module (such as a first module) with higher rated working voltage in the signal amplification device is connected with a power supply (such as a first power supply) with higher voltage. A module (e.g., a second module) with a lower rated operating voltage in the signal amplification device is connected with a power supply (e.g., a second power supply) with a lower voltage. Compared with a scheme that each module in the whole signal amplification device is connected with a power supply (such as a first power supply) with relatively high voltage in the prior art, the scheme of the embodiment reduces the power supply voltage provided for the second module, and the second module can normally work at relatively low voltage, so that the energy consumption of the signal amplification device is saved, and the power consumption of the signal amplification device is reduced. And the energy consumption of the light receiving device is further reduced.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of optical communication, and in particular, to an optical receiving device, an optical component, and a signal amplification device. Background Art

[0002] In a passive optical network (PON) system, optical communication devices communicate by exchanging optical signals. Each optical communication device is configured with an optical component (for example, a bi-directional optical sub-assembly (BOSA), a tri-directional optical sub-assembly (TRI-DIO SA), etc.) for realizing the transceiver and photoelectric conversion of optical signals. Taking the bi-directional optical component as an example, the bi-directional optical component mainly includes a transmitting optical sub-assembly (TOSA) and a receiving optical sub-assembly (ROSA). Among them, the TOSA is used to convert an electrical signal into an optical signal and input it into the optical fiber network for transmission; the ROSA is used to receive the optical signal and convert the received optical signal into an electrical signal.

[0003] Generally, an optical receiving device includes a signal amplification device (for example, a trans-impedance amplifier (TIA)), and the signal amplification device is generally connected to a DC power supply for supplying power to each functional module in the signal amplification device.

[0004] However, with the development of optical communication, the system rate is continuously increasing, resulting in a significant increase in the power consumption of optical components. Therefore, how to reduce the power consumption of the optical receiving device has become an urgent problem to be solved in the industry. Summary of the Invention

[0005] The present application provides an optical receiving device, an optical component, and a signal amplification device for reducing the power consumption of the optical receiving device, and further reducing the power consumption of the optical component.

[0006] In a first aspect, the present application provides an optical receiving device, which can be applied to a bi-directional optical component or a tri-directional optical component in a fiber to the room (FTTR) scenario. The optical receiving device includes a photoelectric detection device and a signal amplification device. The photoelectric detection device is configured to convert the received optical signal into a current signal; the signal amplification device is configured to convert the current signal into a voltage signal and perform an amplification process on the voltage signal to obtain a target voltage signal. Among them, the signal amplification device is connected to a first power supply and a second power supply. The first power supply is used to supply power to a first module in the signal amplification device, and the second power supply is used to supply power to a second module in the signal amplification device. The rated operating voltage of the first module is greater than the rated operating voltage of the second module, and the voltage of the second power supply is less than the voltage of the first power supply.

[0007] In this embodiment, the signal amplification device in the optical receiving device can be connected to two power supplies. The module with a higher rated operating voltage in the signal amplification device (for example, the first module) is connected to the power supply with a larger voltage (for example, the first power supply), and the module with a lower rated operating voltage in the signal amplification device (for example, the second module) is connected to the power supply with a smaller voltage (for example, the second power supply). Compared with the conventional solution in which each module in the entire signal amplification device is connected to the power supply with a larger voltage (for example, the first power supply), the solution of this embodiment reduces the power supply voltage provided to the second module, and the second module can operate normally at a lower voltage. Therefore, the power consumption of the signal amplification device is saved, and further the power consumption of the optical receiving device is reduced. Since the reduction of power consumption is accompanied by the reduction of heat generation, the optical receiving device is easier to dissipate heat, which is beneficial to reducing the difficulty of heat dissipation of the optical receiving device.

[0008] In a possible implementation manner, the optical receiving device further includes a first power supply pin and a second power supply pin; the first power supply pin is connected to a first power supply interface of the signal amplification device. The first power supply pin is used to connect to the first power supply, and the first power supply interface is used to connect to the first module; the second power supply pin is connected to a second power supply interface of the signal amplification device. The second power supply pin is used to connect to the second power supply, and the second power supply interface is used to connect to the second module.

[0009] In this implementation manner, the optical receiving device adds a pin (i.e., the pin of the second power supply), and the signal amplification device adds a power supply interface (i.e., the second power supply interface), so as to realize the connection of the newly added power supply (i.e., the second power supply) to the second module in the signal amplification device. The solution is simple and easy to implement.

[0010] In a possible implementation, the optical receiving device further includes a first power pin and a control pin; the first power pin is connected to the first power interface of the signal amplification device, the first power pin is used to connect to a first power source, and the first power interface is used to connect to a first module; the control pin is connected to the control interface of the signal amplification device, and the control pin is used to connect to a second power source.

[0011] In this implementation, the control pin is multiplexed as the pin for connecting to the second power source, without increasing the number of pins of the optical receiving device, thereby maintaining the original package form of the optical receiving device. Since the fewer the pins of the optical receiving device, the more beneficial it is for miniaturization of the package, therefore, this implementation not only achieves energy saving of the optical receiving device, but also is beneficial to the miniaturization of the optical receiving device.

[0012] In a possible implementation, the voltage magnitude of the second power source varies within a first preset range; the signal amplification device further includes a voltage stabilization module and a control module, the voltage stabilization module is connected to the second power source through the control interface, and the control module is connected to the second power source through the control interface; the voltage stabilization module is configured to process the output voltage of the second power source into a first voltage signal with a fixed magnitude, and the first voltage signal is used to supply power to the second module; the control module is configured to determine a second voltage signal based on the output voltage of the second power source, the second voltage signal is used to adjust the output swing of the target voltage signal, and the voltage magnitude of the second voltage signal varies within a second preset range, and the second preset range is different from the first preset range.

[0013] In a possible implementation, the optical receiving device further includes a first power pin, a first output pin, and a second output pin; the first power pin is connected to the first power interface of the signal amplification device, the first power pin is used to connect to a first power source, and the first power interface is used to connect to a first module; the first output pin is connected to the first output interface of the signal amplification device, the first output pin is connected to the second power source through a first inductor, the first output pin is further connected to a first capacitor, and the first capacitor is connected in parallel with the first inductor; the second output pin is connected to the second output interface of the signal amplification device, the second output pin is connected to the second power source through a second inductor, the second output pin is further connected to a second capacitor, and the second capacitor is connected in parallel with the second inductor.

[0014] In this implementation, the output pin is multiplexed as the pin for connecting to the second power source, without increasing the number of pins of the optical receiving device, thereby maintaining the original package form of the optical receiving device. Since the fewer the pins of the optical receiving device, the more beneficial it is for miniaturization of the package, therefore, this implementation not only achieves energy saving of the optical receiving device, but also is beneficial to the miniaturization of the optical receiving device.

[0015] In a possible implementation, the optical receiving device further includes a first output pin and a second output pin; the first output pin is connected to the first output interface of the signal amplification device, and the second output pin is connected to the second output interface of the signal amplification device. The first output interface and the second output interface are used to output a target voltage signal.

[0016] In a possible implementation, the optical receiving device further includes a control pin, and the control pin is connected to the control interface of the signal amplification device. The control interface is used to receive a control signal, and the control signal is used to adjust the output swing of the target voltage signal.

[0017] In a possible implementation, the optical receiving device further includes a third power supply pin, and the third power supply pin is connected to the photoelectric detection device. The third power supply pin is used to supply power to the photoelectric detection device.

[0018] In a possible implementation, the optical receiving device further includes a ground pin.

[0019] In a possible implementation, the optical receiving device uses a coaxial package.

[0020] In a possible implementation, the second module includes: a signal detection module, and / or, a gain control module.

[0021] In a second aspect, the present application provides an optical component, and the optical component includes the optical receiving device introduced in any one of the implementations in the first aspect. The optical receiving device is used to convert the received optical signal into an electrical signal.

[0022] In a possible implementation, the optical component further includes an optical transmitting device, and the optical transmitting device is used to convert the electrical signal into an optical signal.

[0023] In a possible implementation, the optical component can be a bidirectional optical component or a three-way optical component.

[0024] In a third aspect, the present application provides a signal amplification device, and the signal amplification device includes a first module and a second module. The rated operating voltage of the first module is greater than that of the second module; the first module is used to receive a current signal, convert the current signal into a voltage signal, and perform an amplification process on the voltage signal to obtain a target voltage signal; the second module is used to assist the first module in outputting the target voltage signal. Among them, the first module is powered by a first power supply, the second module is powered by a second power supply, and the voltage of the second power supply is less than the voltage of the first power supply.

[0025] In a possible implementation, the second module includes: a signal detection module, and / or, a gain control module.

[0026] In a possible implementation manner, the signal amplification device includes a first power interface; the first power interface is used to connect the first module and the first power supply.

[0027] In a possible implementation manner, the signal amplification device further includes a second power interface; the second power interface is used to connect the second module and the second power supply.

[0028] In a possible implementation manner, the signal amplification device further includes a control interface; the control interface is used to connect to the second power supply, and the voltage magnitude of the second power supply varies within a first preset range.

[0029] In a possible implementation manner, the signal amplification device further includes a voltage stabilization module and a control module. The voltage stabilization module is connected to the second power supply through the control interface, and the control module is connected to the second power supply through the control interface; the voltage stabilization module is used to process the voltage of the second power supply into a first voltage signal with a fixed magnitude, and the first voltage signal is used to supply power to the second module; the control module is used to determine a second voltage signal based on the output voltage of the second power supply, the second voltage signal is used to adjust the output swing of the target voltage signal, and the voltage magnitude of the second voltage signal varies within a second preset range, and the second preset range is different from the first preset range.

[0030] In a possible implementation manner, the signal amplification device further includes a first output interface and a second output interface; the first output interface and the second output interface are used to connect to the second power supply through an inductor.

[0031] In a possible implementation manner, the signal amplification device further includes an input interface, a first output interface and a second output interface. The input interface is used to receive a current signal, and the first output interface and the second output interface are used to output a target voltage signal, and the target voltage signal is an alternating voltage signal.

[0032] In a possible implementation manner, the signal amplification device further includes a control interface, and the control interface is used to receive a control signal, and the control signal is used to adjust the output swing of the target voltage signal.

[0033] In a fourth aspect, the present application provides an optical module, and the optical module includes the optical receiving device described in any one of the implementation manners in the first aspect. Description of the Drawings

[0034] Figure 1A It is an example diagram of an optical receiving device in the prior art;

[0035] Figure 1B It is another example diagram of an optical receiving device in the prior art;

[0036] Figure 2 It is an example diagram of the optical receiving device provided by the present application;

[0037] Figure 3A An exemplary diagram of the signal amplification device provided for this application;

[0038] Figure 3B Another exemplary diagram of the signal amplification device provided for this application;

[0039] Figure 3C Provided for this application Figure 3A An exemplary diagram of the optical receiving device corresponding to the signal amplification device shown;

[0040] Figure 4A Another exemplary diagram of the signal amplification device provided for this application;

[0041] Figure 4B Provided for this application Figure 4A An exemplary diagram of the optical receiving device corresponding to the signal amplification device shown;

[0042] Figure 5A Another exemplary diagram of the signal amplification device provided for this application;

[0043] Figure 5B Another exemplary diagram of the signal amplification device provided for this application;

[0044] Figure 5C Provided for this application Figure 5A An exemplary diagram of the optical receiving device corresponding to the signal amplification device shown. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments.

[0046] In each embodiment of this application, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0047] In the description, claims and the above-mentioned drawings of the present application, the terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order different from that shown or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0048] It should be understood that the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Here, A and B can be single or multiple. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after. In addition, the expression "at least one of the following" or a similar expression herein is used to represent any combination of the items listed; for example, at least one of A, B, and (or) C can represent the following situations: A exists alone, B exists alone, C exists alone, A and B exist simultaneously, B and C exist simultaneously, A and C exist simultaneously, and A, B, and C exist simultaneously. Here, A, B, and C can be single or multiple.

[0049] It should also be understood that in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. The embodiments or design solutions described as "exemplary" or "for example" should not be construed as being more preferred or having more advantages than other embodiments or design solutions. The use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner for easy understanding.

[0050] The optical receiving device and the optical component in this embodiment can be applied to an optical fiber network, which includes an optical line terminal (OLT), an optical distribution network (ODN), and an optical network unit (ONU) (or an optical network terminal (ONT)). Among them, the OLT is generally connected to the ONU (or ONT) through the ODN. The ODN includes a network composed of optical devices such as optical fibers, optical distribution frames (ODF), optical splitters (also known as optical dividers) (splitters), and combiners. In the downstream direction, the OLT broadcasts the downstream optical signal through the optical component, and distributes the downstream optical signal to each ONU (or ONT) through the ODN. In the upstream direction, in a time division multiple access (TDMA) manner, each ONU (or ONT) sends an upstream optical signal through the optical component in its respective upstream time slot allocated by the OLT.

[0051] Exemplarily, the optical receiving device and the optical component in this embodiment can be applied to a fiber to the room (FTTR) scenario. The FTTR scenario includes a master device and slave devices. The optical receiving device and the optical component provided in this embodiment can be located in the master device and / or the slave devices, which is beneficial to achieving energy saving of the master device and the slave devices. Optionally, the master device can be a main FTTR unit (MFU), a master gateway, or a main fiber unit (Main Fibre Unit, or, Main Fiber Unit), and the slave device can be a sub FTTR unit (SFU), a slave gateway, or a sub fiber unit (Sub Fibre Unit, or, Sub Fiber Unit). In one example, the slave device can be directly connected to a terminal device in a user's home. The terminal device can be a mobile phone or a tablet computer connected to the aforementioned router through wireless fidelity (Wi-Fi), and can also be an Internet of Things device (for example, an indoor temperature control device, an indoor monitoring device, and other artificial intelligence devices, etc.). In another example, there is another network (such as Ethernet, etc.) between the slave device and the terminal device in the user's home. The slave device is an optical network terminal provided by an operator, and the optical network terminal is then connected to devices such as an indoor router. With the development of optical communication technology, the optical receiving device may also be applied to other optical communication scenarios, and this embodiment does not limit.

[0052] For ease of understanding, the optical receiving device in the traditional technology will be introduced first as follows:

[0053] Figure 1A It is an example diagram of the optical receiving device in the traditional technology. As Figure 1A shown, the optical receiving device mainly includes a photoelectric detection device and a signal amplification device. The photoelectric detection device is used to detect optical signals and generate current signals based on the detected optical signals. The signal amplification device receives the current signal from the photoelectric detection device, converts the current signal into a voltage signal, and outputs the voltage signal after amplification processing.

[0054] Figure 1B It is another example diagram of the optical receiving device in the traditional technology. Figure 1B Taking the optical receiving device as a ROSA, the photoelectric detection device as an avalanche photodiode (APD), and the signal amplification device as a trans-impedance amplifier (TIA) as an example for introduction. As Figure 1B shown, the APD and TIA included in the ROSA are packaged in a coaxial package (Transistor Outline, TO-Can). This coaxial package contains multiple pins, and different pins have different functions. Generally, the coaxial package ROSA includes power pins (for example, Figure 1B the Vcc pin and Vapd pin shown) and signal output pins (for example, Figure 1B the TIAout+ pin and TIAout- pin shown). For example, in the Figure 1B shown example, the Vcc pin is connected to the Vcc interface of the TIA to provide power to the TIA. The Vapd pin is used to provide power to the APD, and the APD inputs the current signal determined based on the optical signal into the TIA through the TIAin interface. The TIAout+ pin and TIAout- pin are respectively connected to the two output interfaces of the TIA to output the voltage signal (for example, differential voltage signal) generated by the TIA. Optionally, some coaxial package ROSAs also include control pins (for example, Figure 1B the adjustable output amplitude VOA pin shown) for adjusting the swing of the output voltage of the TIA. In addition, the coaxial package ROSA also includes a ground pin (ground, GND), which refers to the zero-potential reference point in the circuit.

[0055] As Figure 1A and Figure 1BAs shown, a traditional optical receiving device powers a signal amplification device through a single power supply. For example, a TIA has only one power supply interface for connecting to the power supply pin of a ROSA (e.g., the Vcc pin), that is, there is only one power supply to supply power to each module inside the TIA, and each module inside the TIA uses the same magnitude of voltage signal. However, there are some modules inside the TIA that only support a relatively high rated operating voltage, and there are other modules that can not only operate normally at a relatively high operating voltage but also at a relatively low operating voltage. For example, a TIA is a multi-stage amplification device. In order to meet the requirements of the output signal of the TIA in terms of swing, bandwidth, noise, etc., it is generally required that the power supply to the amplification module in the TIA should not be lower than 3.3V. However, some auxiliary control function modules in the TIA (such as a direct current (DC) bias module, an automatic gain control (AGC) module, and a Peak-Peak detection module, etc.) can be powered by a relatively low voltage.

[0056] It can be seen from this that in the traditional solution, the scheme of using only one power supply pin to supply power to the TIA causes some additional power consumption (i.e., the additional power consumption of the auxiliary function module due to using a relatively high voltage), so it is not conducive to energy saving of the optical receiving device (such as a ROSA).

[0057] In response to this, the present application proposes an optical receiving device, an optical component, and a signal amplification device, which supply power to different modules inside the signal amplification device (such as a TIA) through two power supplies with different voltages, thereby reducing the power consumption of the optical receiving device and further reducing the power consumption of the optical component.

[0058] The following will combine Figure 2 to introduce the main structure of the optical receiving device provided by the present application:

[0059] As Figure 2 shown, the optical receiving device provided by the present application includes a signal amplification device 01 and a photoelectric detection device 02. Among them, the photoelectric detection device 02 is used to detect an optical signal and convert the received optical signal into an electrical current signal. The signal amplification device 01 is used to convert the electrical current signal into a voltage signal, amplify the voltage signal, and output a target voltage signal.

[0060] Different from the signal amplification device using a single power supply in the traditional technology, Figure 2The signal amplification device 01 shown is connected to two power supplies with different voltage magnitudes simultaneously, that is, two voltages with different magnitudes supply power to the signal amplification device 01 at the same time. Specifically, the signal amplification device 01 includes a first module 011 and a second module 012. Among them, the rated operating voltage of the first module 011 is greater than that of the second module 012. In addition, the two power supplies connected to the signal amplification device 01 are a first power supply 031 and a second power supply 032 respectively, and the voltage of the second power supply 032 is less than that of the first power supply 031. The first module 011 in the signal amplification device 01 is connected to the first power supply 031, that is, the first power supply 031 is used to supply power to the first module 011 in the signal amplification device 01. The second module 012 in the signal amplification device 01 is connected to the second power supply 032, that is, the second power supply 032 is used to supply power to the second module 012 in the signal amplification device 01.

[0061] In this embodiment, the signal amplification device 01 in the optical receiving device can be connected to two power supplies. The module with a higher rated operating voltage in the signal amplification device 01 (for example, the first module 011) is connected to the power supply with a larger voltage (for example, the first power supply 031), and the module with a lower rated operating voltage in the signal amplification device 01 (for example, the second module 012) is connected to the power supply with a smaller voltage (for example, the second power supply 032). Compared with the conventional technology where each module (for example, the first module 011 and the second module 012) in the entire signal amplification device 01 is connected to the power supply with a larger voltage (for example, the first power supply 031), the solution in this embodiment reduces the power supply voltage provided to the second module 012. Moreover, the second module 012 can operate normally at a lower voltage. Therefore, the energy consumption of the signal amplification device 01 is saved, and further the energy consumption of the optical receiving device is reduced. Since the reduction of energy consumption is accompanied by the reduction of heat generation, the optical receiving device is easier to dissipate heat, which is beneficial to reducing the difficulty of heat dissipation of the optical receiving device.

[0062] Exemplarily, taking the signal amplification device 01 as a TIA, the TIA is a multi-stage amplification device, and the swing of its output generally requires to be greater than 450 mV. Therefore, it is usually required that the power supply of the TIA cannot be lower than 3.3V. Thus, the voltage of the first power supply 031 connected to the first module 011 can be 3.3V. The voltage of the second power supply 032 connected to the second module 012 is less than 3.3V. For example, the voltage of the second power supply 032 is 1.8V, 1.6V or 2.2V, etc. It should be understood that different second modules can use second power supplies with different voltages. For example, the second module #1 uses a second power supply of 1.6V, the second module #2 uses a second power supply of 1.8V, and the second module #3 uses a second power supply of 2.2V. The size of the second power supply specifically used by the second module can be adjusted based on the actual circuit requirements under the condition that it is less than the size of the first power supply. The voltage size of the second power supply is not limited in this embodiment. Since a 1.8V power supply is commonly provided on a single board, in subsequent embodiments, the second power supply is mainly taken as an example of 1.8V for introduction.

[0063] In the traditional technology, the TIA amplifier has only one power supply (for example, a 3.3V power supply), and both the first module and the second module in the TIA operate at 3.3V. However, the second module can also operate at a lower voltage (for example, 1.8V, etc.). Therefore, the traditional solution is not conducive to energy conservation. In the solution provided by the embodiment of the present application, the TIA can be connected to two power supplies with different voltage sizes. Among them, the power supply with a higher voltage (for example, 3.3V) supplies power to the first module, and the power supply with a lower voltage (for example, 1.8V) supplies power to the second module. Therefore, it is beneficial to save the energy consumption of the signal amplification device, and further beneficial to reduce the energy consumption of the optical receiving device.

[0064] In a possible implementation manner, the photoelectric detection device 02 can be a photodiode (PD) or an avalanche photodiode (APD), which is not limited in this embodiment. Among them, the APD has a signal amplification function compared with the PD.

[0065] In a possible implementation manner, as Figure 3AAs shown, the first module 011 in the signal amplification device 01 can be an amplification module, that is, the core component in the signal amplification device 01 that realizes the conversion between a weak current signal and an amplified voltage signal. Its core function is to convert and amplify the input weak current signal into a voltage signal. Optionally, the amplification module is usually composed of components such as operational amplifiers, and can set the transimpedance gain through feedback resistors, etc., thereby determining the proportional relationship between the output voltage and the input current. Since the amplification module has high requirements for parameters such as output swing, bandwidth, and noise, generally, a relatively high rated operating voltage is used for the amplification module. For example, the power supply for the amplification module is the first power supply 031, and the voltage of the first power supply 031 can be 3.3V.

[0066] Optionally, the first module 011 further includes a DC bias module (for example, Figure 3A the DC bias module 1 shown) connected to the amplification module, which is used to provide a DC bias point (also called the DC operating point) to the amplification module to ensure that the device (such as the amplification module) operates in the linear region and avoid signal distortion.

[0067] Optionally, the first module 011 further includes a voltage stabilization module corresponding to the amplification module (for example, Figure 3A the voltage stabilization module 1 shown), which is used to stabilize the voltage input to the amplification module. For example, the voltage stabilization module can be a low dropout regulator (LDO), which is a linear voltage regulation component used to stably convert the input voltage into a lower output voltage. By setting the voltage stabilization module 1 between the DC bias module 1 and the first power supply, it is ensured that the DC bias module 1 obtains a stable DC power supply, which is beneficial to improving the stability of the DC bias point and further beneficial to ensuring the stability of the amplification module.

[0068] In a possible implementation manner, the second module 012 in the signal amplification device 01 includes a gain control module and / or a signal detection module. The gain control module and the signal detection module can operate at a relatively high voltage (for example, 3.3V), or can also operate at a relatively low voltage (for example, 1.8V, 1.6V, 2.2V, etc.). As Figure 3AAs shown, the gain control module is connected to the amplification module and is used to instruct the amplification module to adjust the gain of the output voltage. For example, the gain control module can determine how to adjust the gain of the amplification module according to the amplitude or intensity of the input signal, so that the signal amplitude of the output voltage of the amplification module remains within a reasonable range (for example, to prevent the amplification module from overloading or amplifying noise). Optionally, the gain control module can be an automatic gain control (AGC) module, or a module including a feedback loop such as a variable gain amplifier (VGA), a comparator, a controller, etc. The specific implementation form of the gain control module is not limited in this embodiment. As Figure 3A As shown, the signal detection module is used to detect the output signal of the amplification module. For example, it can detect the amplitude of the voltage signal output by the amplification module (such as the maximum value, minimum value, average value, etc. of the amplitude), the noise level, the signal integrity, etc. The signal detection module can provide the detected result (such as the signal amplitude) to the gain control module, so that the gain control module can determine whether to adjust the gain and how to adjust the gain. Optionally, the signal detection module can be a peak detection module (such as a Peak-Peak detection module), which can detect the difference (peak-to-peak value) between the maximum value and the minimum value in the input signal and is used to evaluate the signal amplitude, the noise level or judge the signal integrity, etc.

[0069] Optionally, the second module 012 further includes a DC bias module (such as Figure 3A the DC bias module 2 shown in the figure) connected to the gain control module, which is used to provide a DC bias point to the gain control module to ensure that the gain control module operates in the linear region. Optionally, the second module 012 further includes a DC bias module (such as Figure 3A the DC bias module 3 shown in the figure) connected to the signal detection module, which is used to provide a DC bias point to the signal detection module to ensure that the signal detection module operates in the linear region.

[0070] Optionally, the second module 012 further includes a voltage stabilizing module (such as Figure 3A the voltage stabilizing module 2 shown in the figure) corresponding to the gain control module or the signal detection module, which is used to stabilize the voltage input to the gain control module or the signal detection module. For example, the voltage stabilizing module can be a voltage stabilizing element such as an LDO. By setting the voltage stabilizing module 2 between the DC bias module 2 and the second power supply, it is ensured that the DC bias module 2 obtains a stable DC power supply, which is beneficial to improving the stability of the DC bias point and further beneficial to ensuring the stability of the gain control module. By setting the voltage stabilizing module 2 between the DC bias module 3 and the second power supply, it is ensured that the DC bias module 3 obtains a stable DC power supply, which is beneficial to improving the stability of the DC bias point and further beneficial to ensuring the stability of the signal detection module. It should be understood that Figure 3AIn the shown example, the gain control module and the signal detection module share the same voltage stabilizing module, that is, DC bias module 2 and DC bias module 3 are connected to the same voltage stabilizing module. In practical applications, the gain control module and the signal detection module can also be respectively connected to two different voltage stabilizing modules, that is, DC bias module 2 and DC bias module 3 are respectively connected to different voltage stabilizing modules, and both voltage stabilizing modules are connected to the second power supply.

[0071] It should be understood that the gain control module and the signal detection module can use the second power supply of the same size (for example, Figure 3A in the shown example, both use a 1.8V power supply), or can respectively use second power supplies of different sizes (for example, one module uses a 1.8V power supply and the other module uses a 1.6V power supply), which is not limited in this embodiment. When the gain control module and the signal detection module use second power supplies of different sizes, the gain control module and the signal detection module use different voltage stabilizing modules.

[0072] It should be noted that the second module may also include other modules with a rated operating voltage or an operating voltage lower than the rated operating voltage of the amplification module, and examples are not listed one by one here.

[0073] It should be understood that since the power supplies that the signal amplification device can be connected to increase, the signal amplification device needs to add a power supply interface, or reuse the existing interface of the signal amplification device to connect to the power supply. In addition, the optical receiving device also needs to add a power supply pin, or reuse the existing pin of the optical receiving device to connect to the power supply. Examples are introduced separately below:

[0074] In a possible implementation manner, the signal amplification device adds a power supply interface, and the optical receiving device adds a power supply pin.

[0075] Specifically, the signal amplification device includes a first power supply interface and a second power supply interface. Among them, the first power supply interface is a power supply interface existing in the prior art, and is used to connect the first module inside the signal amplification device and the first power supply outside the signal amplification device; the second power supply interface is the newly added power supply interface in this embodiment, and is used to connect the second module inside the signal amplification device and the second power supply outside the signal amplification device. For the explanations of the first module, the second module, the first power supply, and the second power supply, please refer to the previous introduction and will not be elaborated here.

[0076] Meanwhile, the optical receiving device includes a first power pin and a second power pin. Among them, the first power pin is a power pin existing in the prior art, which is used to connect to the first power interface of the signal amplification device and to connect to the first power source outside the optical receiving device. That is to say, the first power source is connected to the first power interface of the signal amplification device through the first power pin of the optical receiving device, so as to realize the connection between the first module in the signal amplification device and the first power source. In addition, the second power pin is a newly added power pin in this embodiment, which is used to connect to the second power interface of the signal amplification device and to connect to the second power source outside the optical receiving device. That is to say, the second power source is connected to the second power interface of the signal amplification device through the second power pin of the optical receiving device, so as to realize the connection between the second module in the signal amplification device and the second power source. Optionally, in order to reduce the noise of the power source (for example, ripple noise), a filter capacitor can be provided between the first power pin and the first power interface, and a filter capacitor can also be provided between the second power pin and the second power interface.

[0077] Exemplarily, Figure 3A is a schematic diagram of an example of the signal amplification device provided by this application. As Figure 3A shown, the first power source (for example, 3.3V power source) is used to supply power to the amplification module. Specifically, the DC voltage output by the first power source is provided to the voltage stabilization module 1, and the voltage stabilization module 1 processes the DC voltage into a stable DC voltage and provides the stable DC voltage to the DC bias module 1. Then, the DC bias module 1 determines the bias voltage based on the stable DC voltage and provides the bias voltage to the amplification module. The second power source (for example, 1.8V power source) is used to supply power to the signal detection module and the gain control module. Specifically, the DC voltage output by the second power source is provided to the voltage stabilization module 2, and the voltage stabilization module 2 processes the DC voltage into a stable DC voltage and provides the stable DC voltage to the DC bias module 2 and the DC bias module 3. Then, the DC bias module 2 provides the bias voltage to the gain control module based on the stable DC voltage, and the DC bias module 3 provides the bias voltage to the signal detection module based on the stable DC voltage. The amplification module receives the input current, converts the current signal into a voltage signal and outputs it, and at the same time feeds back the output voltage signal to the signal detection module and the gain control module, so as to form a feedback loop, that is, the signal detection module and the gain control module generate signals for adjusting the output voltage of the amplification module. For the specific adjustment principle, please refer to the introduction above and will not be elaborated here.

[0078] Exemplarily, Figure 3B is a schematic diagram of another example of the signal amplification device provided by this application. Figure 3B The difference between the example shown and Figure 3A the example shown is that Figure 3BThe DC bias module in [device] can select two different power supply voltages. Taking the DC bias module 2 as an example, in scenarios with high energy-saving requirements, the DC bias module 2 can be configured to use a power supply with a lower voltage (e.g., 1.8V) to save system energy consumption; in scenarios where energy-saving requirements are not sensitive, or when the 1.8V power supply of the single board fails, the DC bias module 2 can also be configured to use a power supply with a higher voltage (e.g., 3.3V) to improve the reliability and flexibility of the signal amplification device. It can be seen that different modules in the signal amplification device provided in this application can support different working voltages, which is not only beneficial to system energy saving, but also can meet the power management requirements of different scenarios or different systems, thus realizing flexible and reliable power management.

[0079] It should be understood that if the first power supply is a stable DC power supply, the first power supply can be directly connected to the DC bias module 1 without setting the voltage regulator module 1. Similarly, if the second power supply is a stable DC power supply, the second power supply can be directly connected to the DC bias module 2 and the DC bias module 3 without setting the voltage regulator module 2. Optionally, when the bias points of the signal detection module and the gain control module are close or the same, the signal detection module and the gain control module can also share the same DC bias module.

[0080] Exemplarily, Figure 3C For Figure 3A a schematic diagram of an example of the optical receiving device corresponding to the signal amplification device shown. Compared with Figure 1B the example shown, in Figure 3C the example shown, not only the Vcc pin originally used to supply power to the TIA (for connecting to the first power supply) is retained, but also a Vdd pin for supplying power to the TIA (for connecting to the second power supply) is added. Among them, the voltage of the second power supply (i.e., the Vdd voltage) is less than the voltage of the first power supply (i.e., the Vcc voltage). The remaining pins are the same as those in the example shown in Figure 1B above. For specific details, please refer to the relevant introduction in Figure 1B above and will not be elaborated here. In Figure 3CIn the example shown, it is assumed that the current Icc required by the TIA includes two parts, Icc1 (for example, the current required by the first module) and Icc2 (for example, the current required by the second module), that is, Icc = Icc1 + Icc2. And the voltage corresponding to Icc1 is Vcc (for example, 3.3V), and the voltage corresponding to Icc2 is Vdd (for example, 1.8V). For example, if Icc is fixed at 80 mA, Icc1 is 20 mA, and Icc2 is 60 mA, then the total power consumption P of the TIA in this example is P = Icc1×Vcc + Icc2×Vdd = 20 mA×3.3V + 60 mA×1.8V = 174 mW; in the traditional technology, the total power consumption P0 of the TIA is P0 = Icc×Vcc = 80 mA×3.3V = 264 mW. Therefore, compared with the traditional solution, this example saves 264 mW - 174 mW = 90 mW. Another example, if Icc is fixed at 60 mA, Icc1 is 30 mA, and Icc2 is 30 mA, then the total power consumption P of the TIA in this example is P = Icc1×Vcc + Icc2×Vdd = 30 mA×3.3V + 30 mA×1.8V = 153 mW; in the traditional technology, the total power consumption P0 of the TIA is P0 = Icc×Vcc = 60 mA×3.3V = 198 mW. Therefore, compared with the traditional solution, this example saves 198 mW - 153 mW = 45 mW, and the power consumption is reduced by more than 20%.

[0081] Thus, it can be seen that the optical receiving device is powered by dual power supplies, and the operating voltage corresponding to the second module in the signal amplifying device is reduced, thereby reducing the power consumption of the signal amplifying device and further reducing the power consumption of the entire optical receiving device. In addition, Vdd can use the 1.8V power supply on the single board without adding additional power supply types on the single board, making it easy to implement.

[0082] In this embodiment, the optical receiving device adds a pin (i.e., the pin of the second power supply), and the signal amplifying device adds a power supply interface (i.e., the second power supply interface), thereby realizing the connection of the newly added power supply (i.e., the second power supply) to the second module in the signal amplifying device. The solution is simple and easy to implement.

[0083] In another possible embodiment, the newly added power supply (i.e., the second power supply) multiplexes the control pin of the optical receiving device, and a voltage stabilizing module and a control module are newly added inside the signal amplifying device.

[0084] Specifically, the optical receiving device includes a first power pin and a control pin. Among them, the first power pin is the power pin existing in the prior art, which is used to connect to the first power interface of the signal amplification device and to connect to the first power source outside the optical receiving device. That is to say, the first power source is connected to the first power interface of the signal amplification device through the first power pin of the optical receiving device, so as to realize the connection between the first module in the signal amplification device and the first power source. In addition, the control pin is the power pin modified in this embodiment. The control pin in the prior art is used to receive a control signal, which can be a signal generated by a digital-to-analog converter (DAC) on the single board, and this control signal is used to adjust the output swing of the amplification module in the signal amplification device. In this embodiment, the control pin is used to connect to the second power source, and the control pin is then connected to the control interface of the signal amplification device, so as to input the second power source into the signal amplification device through the control interface.

[0085] Since the control signal for adjusting the output swing is a variable voltage signal rather than a fixed voltage signal, the second power source provided to the second module in this embodiment is a variable power source. For example, the voltage magnitude of the second power source varies within a first preset range, and the maximum value of the first preset range is less than the voltage magnitude of the first power source. For example, the voltage of the first power source is 3.3V, and the voltage of the second power source can vary within 1.6V to 1.8V. However, the second module needs to use a stable DC power source, so a voltage stabilizing module needs to be added inside the signal amplification device. Optionally, the voltage stabilizing module can be an LDO, and the LDO is used to stabilize the input small variable power source into a fixed regulated power source. In addition, even though the second power source is a variable power source, the voltage signal output by the second power source may not be directly used for controlling the output swing, so a control module needs to be added inside the signal amplification device. Optionally, the control module refers to a module or device that can realize the mapping from the input swing to the output swing. For example, the control module can be a swing amplifier, a comparator, or other modules or devices that can realize swing mapping, and this embodiment is not limited.

[0086] Inside the signal amplification device, the voltage stabilization module is connected to the second power supply through the control interface, and the control module is connected to the second power supply through the control interface. Among them, the voltage stabilization module is used to process the output voltage of the second power supply into a first voltage signal with a fixed size, and the first voltage signal is used to supply power to the second module, that is, to stably supply power to the second module through the first voltage signal, which is beneficial to improving the power supply stability of the second module. In addition, the control module is used to determine the second voltage signal based on the output voltage of the second power supply, and the second voltage signal is used to adjust the output swing of the target voltage signal. The voltage magnitude of the second voltage signal varies within a second preset range, and the second preset range is different from the first preset range. That is to say, in this embodiment, the control signal for adjusting the output swing of the output voltage of the amplification module is the second voltage signal generated by the control module based on the output voltage of the second power supply, rather than directly using the output voltage of the second power supply or an externally input signal, which is beneficial to improving the reliability of the control signal.

[0087] Exemplarily, Figure 4A is a schematic diagram of another example of the signal amplification device. As Figure 4A shown, the first power supply (for example, a 3.3V power supply) is used to supply power to the amplification module. Specifically, the DC voltage output by the first power supply is provided to the voltage stabilization module 1, and the voltage stabilization module 1 processes the DC voltage into a stable DC voltage and provides the stable DC voltage to the DC bias module 1. Then, the DC bias module 1 determines the bias voltage based on the stable DC voltage and provides the bias voltage to the amplification module. The second power supply is a variable power supply (for example, a power supply with a voltage value supporting a change between 1.6V and 1.8V), which is used to supply power to the signal detection module and the gain control module, and, to provide an input for the control module to generate a control signal. On the one hand, the variable DC voltage output by the second power supply is provided to the voltage stabilization module 2, and the voltage stabilization module 2 processes the variable DC voltage into a stable DC voltage, for example, processes the voltage changing between 1.6V and 1.8V into a stable DC voltage of 1.8V, and then provides the stable DC voltage to the subsequent modules (such as the DC bias module 2, the DC bias module 3, the signal detection module, and the gain control module, etc.). On the other hand, the variable DC voltage output by the second power supply is transmitted to the control module, and the control module generates a control signal (such as the second voltage signal introduced above) capable of controlling the output swing based on the variable DC voltage to achieve the control of the output swing of the output voltage of the amplification module. In addition, in this example, the functions of the DC bias module 2, the DC bias module 3, the signal detection module, the gain control module, and the amplification module are similar to those in the Figure 3A example shown above and will not be elaborated here.

[0088] It should be understood that if the first power supply is a stable DC power supply, the first power supply can be directly connected to the DC bias module 1 without setting the voltage regulator module 1. Since the second power supply is a variable DC power supply, the voltage regulator module 2 is required. Optionally, when the bias point of the signal detection module is close to or the same as the bias point of the gain control module, the signal detection module and the gain control module can also share the same DC bias module. It should also be understood that Figure 4A The DC bias module in the example shown can also be set to select one of two different power supply voltages. Figure 3B The examples shown are similar and are not repeated here.

[0089] For example, Figure 4B for Figure 4A Schematic diagram of an example of an optical receiving device corresponding to the signal amplifying device shown. Figure 1B The example shown, Figure 4B The example shown retains the Vcc pin originally used to power the TIA (for connecting the first power supply). The working principle of the Vcc pin is the same as Figure 1B The examples shown are similar, please refer to the previous article for details Figure 1B In the example shown, Figure 4B The example shown modifies the function of the control pin (i.e., the VOA pin). For example, the VOA pin adds the function of a Vdd pin (used to connect to a second power supply) for powering the TIA, where the voltage of the second power supply (i.e., the Vdd voltage) is less than the voltage of the first power supply (i.e., the Vcc voltage). The remaining pins are the same as those in the previous text. Figure 1B The examples shown are the same, please refer to the previous article for details Figure 1B The corresponding introduction will not be repeated here. Figure 4B The energy-saving principle of the example shown is similar to the energy-saving principle introduced above and will not be described in detail here.

[0090] In this embodiment, the VOA pin is reused as the pin for connecting the Vdd power supply, and the number of pins of the optical receiving device is not increased, thereby maintaining the original packaging form of the optical receiving device. Since the fewer the pins of the TO package, the more conducive to the miniaturization of the TO package, this embodiment not only achieves energy saving of the optical receiving device, but also facilitates the miniaturization of the optical receiving device.

[0091] In another possible implementation, a newly added power source (ie, a second power source) reuses the output pin of the optical receiving device, and a capacitor and an inductor are added to the outside of the signal amplifying device.

[0092] Specifically, the optical receiving device includes a first power pin, a first output pin, and a second output pin. Among them, the first power pin is a power pin existing in the prior art, which is used to connect to the first power interface of the signal amplification device and to connect to a first power source outside the optical receiving device. Specifically, it is similar to the foregoing embodiment and will not be elaborated here. In addition, the first output pin and the second output pin are pins with modified functions in this embodiment. The output pins in the prior art are used to output voltage signals. For example, the TIAout+ pin and the TIAout- pin are respectively connected to two output interfaces of the TIA and are used to output the voltage signals generated by the TIA (for example, differential voltage signals). However, the output pins (for example, the TIAout+ pin and the TIAout- pin) of the optical receiving device in this embodiment are used to connect to a second power source so that the voltage provided by the second power source can supply power to the TIA without affecting the output voltage of the TIA.

[0093] Exemplarily, as Figure 5A shown, since the voltage provided by the second power source is a DC voltage and the voltage output by the signal amplification device is an AC voltage, therefore, a capacitor and an inductor are connected to the output pins outside the signal amplification device, and the capacitor and the inductor are connected in parallel. Among them, the inductor has the characteristic of passing AC and blocking DC, and can conduct the DC signal provided by the second power source into the signal amplification device and block the AC signal output by the signal amplification device. The capacitor has the characteristic of passing DC and blocking AC, and can transmit the AC signal output by the signal amplification device through the capacitor and block the DC signal provided by the second power source from mixing in. In this example, the functions of the first power source, the DC bias module 2, the DC bias module 3, the signal detection module, the gain control module, and the amplification module are similar to those in the Figure 3A example shown above and will not be elaborated here.

[0094] Exemplarily, as Figure 5B shown, the first output pin (for example, the TIAout+ pin) of the optical receiving device is connected to the first output interface of the signal amplification device. The first output pin is connected to the second power source through a first inductor (for example, L1), and the first output pin is also connected to a first capacitor (for example, C1). The first capacitor is connected in parallel with the first inductor. In addition, the second output pin (for example, the TIAout- pin) of the optical receiving device is connected to the second output interface of the signal amplification device. The second output pin is connected to the second power source through a second inductor (for example, L2), and the second output pin is also connected to a second capacitor (for example, C2). The second capacitor is connected in parallel with the second inductor. Optionally, the capacitance values of the first capacitor and the second capacitor can be the same. Optionally, the inductance values of the first inductor and the second inductor can be the same.

[0095] Exemplarily, Figure 5C For Figure 5ASchematic diagram of an example of the optical receiving device corresponding to the signal amplification device shown. Compared with Figure 1B the example shown, Figure 5C the example shown retains the Vcc pin (for connecting the first power supply) originally used to supply power to the TIA. The working principle of the Vcc pin is similar to that of Figure 1B the example shown. For details, please refer to the relevant introduction in the example shown in Figure 1B the previous text. In addition, Figure 5C the example shown modifies the functions of the output pins (for example, the TIAout+ pin and the TIAout- pin). For example, the output pins are configured to be connected to the second power supply, where the voltage of the second power supply (i.e., the Vdd voltage) is less than the voltage of the first power supply (i.e., the Vcc voltage). The remaining pins are the same as those in Figure 1B the example shown in the previous text. For details, please refer to the relevant introduction in Figure 1B the corresponding previous text, which will not be elaborated here. In addition, Figure 5C the energy-saving principle of the example shown is similar to the energy-saving principle introduced in the previous text, which will not be elaborated here.

[0096] In this embodiment, the multiplexed output pins (for example, the TIAout+ pin and the TIAout- pin) are used as the pins connected to the Vdd power supply, without increasing the number of pins of the optical receiving device, thus maintaining the original package form of the optical receiving device. Since fewer pins in the TO package are more conducive to the miniaturization of the TO package, therefore, this embodiment not only achieves energy saving of the optical receiving device, but also is conducive to the miniaturization of the optical receiving device.

[0097] In addition, this application also provides a signal amplification device, which includes a first module and a second module. The rated operating voltage of the first module is greater than that of the second module. The first module is used to receive a current signal, convert the current signal into a voltage signal, and perform amplification processing on the voltage signal to obtain a target voltage signal; the second module is used to assist the first module in outputting the target voltage signal; wherein, the first module is powered by a first power supply, and the second module is powered by a second power supply, and the voltage of the second power supply is less than the voltage of the first power supply. For the explanations of the first module, the second module, the first power supply, and the second power supply, please refer to the relevant introduction in Figure 2 the corresponding embodiment in the previous text, which will not be elaborated here. Exemplarily, the signal amplification device is a TIA.

[0098] In this embodiment, the TIA can be connected to two power supplies of different magnitudes. Among them, the power supply with a higher voltage (for example, 3.3V) supplies power to the first module (for example, the amplification module), and the power supply with a lower voltage (for example, 1.8V) supplies power to the second module. Compared with the traditional technology where a power supply with a higher voltage (for example, 3.3V) is uniformly used, it is beneficial to save energy consumption.

[0099] In addition, the present application also provides an optical component, which includes Figure 2 the optical receiving device introduced above, which is used to convert the received optical signal into an electrical signal. Optionally, the optical component further includes an optical transmitting device, which is used to convert the electrical signal into an optical signal for transmission.

[0100] In one example, the optical component can be a bidirectional optical component, and the bidirectional optical component includes an optical transmitting device and an optical receiving device.

[0101] In another example, the optical component can be a three-way optical component, and the three-way optical component includes two optical transmitting devices and an optical receiving device.

[0102] In this embodiment, since the optical receiving device realizes energy saving by connecting two power supplies with different voltage magnitudes, the optical component including the optical receiving device also realizes energy saving to a certain extent.

[0103] In addition, the present application also provides an optical module, which includes Figure 2 the optical receiving device introduced above.

[0104] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. An optical receiving device, characterized in that, Including: A photoelectric detection device and a signal amplification device; The photoelectric detection device is used to convert the received optical signal into an electric current signal; The signal amplification device is used to convert the electric current signal into a voltage signal and perform amplification processing on the voltage signal to obtain a target voltage signal; Wherein, the signal amplification device is connected to a first power supply and a second power supply. The first power supply is used to supply power to a first module in the signal amplification device, and the second power supply is used to supply power to a second module in the signal amplification device. The rated operating voltage of the first module is greater than the rated operating voltage of the second module, and the voltage of the second power supply is less than the voltage of the first power supply.

2. The optical receiving device according to claim 1, characterized in that, The optical receiving device further includes a first power supply pin and a second power supply pin; The first power supply pin is connected to a first power supply interface of the signal amplification device. The first power supply pin is used to connect to the first power supply, and the first power supply interface is used to connect to the first module; The second power supply pin is connected to a second power supply interface of the signal amplification device. The second power supply pin is used to connect to the second power supply, and the second power supply interface is used to connect to the second module.

3. The optical receiving device according to claim 1, characterized in that, The optical receiving device further includes a first power supply pin and a control pin; The first power supply pin is connected to a first power supply interface of the signal amplification device. The first power supply pin is used to connect to the first power supply, and the first power supply interface is used to connect to the first module; The control pin is connected to a control interface of the signal amplification device. The control pin is used to connect to the second power supply.

4. The optical receiving device according to claim 3, characterized in that The voltage of the second power supply varies within a first preset range; The signal amplification device further includes a voltage stabilization module and a control module. The voltage stabilization module is connected to the second power supply through the control interface, and the control module is connected to the second power supply through the control interface; The voltage stabilization module is used to process the output voltage of the second power supply into a first voltage signal with a fixed magnitude, and the first voltage signal is used to supply power to the second module; The control module is used to determine a second voltage signal based on the output voltage of the second power supply. The second voltage signal is used to adjust the output swing of the target voltage signal. The voltage magnitude of the second voltage signal varies within a second preset range, and the second preset range is different from the first preset range.

5. The optical receiving device according to claim 1, wherein The optical receiving device further includes a first power supply pin, a first output pin, and a second output pin; The first power supply pin is connected to a first power supply interface of the signal amplification device. The first power supply pin is used to connect to the first power supply, and the first power supply interface is used to connect to the first module; The first output pin is connected to a first output interface of the signal amplification device. The first output pin is connected to the second power supply through a first inductor, and the first output pin is further connected to a first capacitor, and the first capacitor is connected in parallel with the first inductor; The second output pin is connected to the second output interface of the signal amplification device. The second output pin is connected to the second power supply through a second inductor. The second output pin is also connected to a second capacitor, and the second capacitor is connected in parallel with the second inductor.

6. The optical receiving device according to any one of claims 1 to 4, characterized in that The optical receiving device further includes a first output pin and a second output pin. The first output pin is connected to the first output interface of the signal amplification device, and the second output pin is connected to the second output interface of the signal amplification device. The first output interface and the second output interface are used to output the target voltage signal.

7. The optical receiving device according to any one of claims 1, 2 or 5, characterized in that The optical receiving device further includes a control pin. The control pin is connected to the control interface of the signal amplification device. The control interface is used to receive a control signal, and the control signal is used to adjust the output swing of the target voltage signal.

8. The optical receiving device according to any one of claims 1 to 5, characterized in that The optical receiving device further includes a third power pin. The third power pin is connected to the photoelectric detection device, and the third power pin is used to supply power to the photoelectric detection device.

9. The optical receiving device according to any one of claims 1 to 5, characterized in that The optical receiving device further includes a ground pin.

10. The optical receiving device according to any one of claims 1 to 5, characterized in that, The optical receiving device uses coaxial packaging.

11. The optical receiving device according to any one of claims 1 to 5, characterized in that, The second module includes: A signal detection module, and / or, a gain control module.

12. An optical component, characterized in that, Including: The optical receiving device according to any one of claims 1 to 11, wherein the optical receiving device is configured to convert a received optical signal into an electrical signal.

13. The optical component according to claim 12, characterized in that, The optical component further includes an optical transmitting device, and the optical transmitting device is configured to convert an electrical signal into an optical signal.

14. A signal amplification device, characterized in that, Including: A first module and a second module, wherein the rated operating voltage of the first module is greater than the rated operating voltage of the second module; The first module is configured to receive a current signal, convert the current signal into a voltage signal, and perform an amplification process on the voltage signal to obtain a target voltage signal; The second module is configured to assist the first module in outputting the target voltage signal; Wherein, the first module is powered by a first power supply, the second module is powered by a second power supply, and the voltage of the second power supply is less than the voltage of the first power supply.

15. The signal amplification device according to claim 14, characterized in that, The second module includes: A signal detection module, and / or, a gain control module.

16. The signal amplification device according to claim 14 or 15, characterized in that, The signal amplification device includes a first power interface; The first power interface is configured to connect the first module and the first power supply.

17. The signal amplification device according to claim 16, characterized in that, The signal amplification device further includes a second power interface; The second power interface is configured to connect the second module and the second power supply.

18. The signal amplification device according to claim 16, characterized in that The signal amplification device further includes a control interface; The control interface is configured to connect to the second power supply, and the magnitude of the voltage of the second power supply varies within a first preset range.

19. The signal amplification device according to claim 18, wherein The signal amplification device further includes a voltage stabilization module and a control module. The voltage stabilization module is connected to the second power supply through the control interface, and the control module is connected to the second power supply through the control interface; The voltage stabilization module is configured to process the voltage of the second power supply into a first voltage signal with a fixed magnitude, and the first voltage signal is used to supply power to the second module; The control module is configured to determine a second voltage signal based on the output voltage of the second power supply. The second voltage signal is used to adjust the output swing of the target voltage signal. The voltage magnitude of the second voltage signal varies within a second preset range, and the second preset range is different from the first preset range.

20. The signal amplification device according to claim 16, characterized in that, The signal amplification device further includes a first output interface and a second output interface; The first output interface and the second output interface are configured to connect to the second power supply through an inductor.

21. The signal amplification device according to claim 14 or 15, characterized in that, The signal amplification device further includes an input interface, a first output interface, and a second output interface. The input interface is configured to receive the current signal, and the first output interface and the second output interface are configured to output the target voltage signal, where the target voltage signal is an alternating voltage signal.

22. The signal amplification device according to claim 14 or 15, characterized in that The signal amplification device further includes a control interface, and the control interface is configured to receive a control signal, where the control signal is used to adjust the output swing of the target voltage signal.

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