Linear pluggable optical module, and method for realizing high stability and low power consumption of linear pluggable optical module

Abstract

The embodiments of the present application relate to the technical field of linear pluggable optical modules. Provided are a linear pluggable optical module, and a method for realizing high stability and low power consumption of a linear pluggable optical module. By means of a Buck-Boost DC-DC conversion module arranged at a power-supply input port of a linear pluggable optical module, the system power supply on a host side and the power supply of the linear pluggable optical module can be isolated from each other, so as to achieve the effect of isolating the power-supply noise on a system side, thereby improving the application stability of the linear pluggable optical module. A DC-DC conversion module is configured to directly provide a current to a high-power laser device, so as to eliminate the headroom of a current-mode digital-to-analog converter, thereby reducing the power consumption of the linear pluggable optical module.

Description

Linear pluggable optical module and high-stability low-power consumption implementation method for linear pluggable optical module

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202410530499.0, filed on April 29, 2024, and entitled "High-stability low-power consumption implementation method for linear pluggable optical module", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of linear pluggable optical modules, in particular to a linear pluggable optical module and a high-stability low-power consumption implementation method for the linear pluggable optical module. BACKGROUND

[0004] High-speed linear pluggable optical modules (LPOs) are widely used in large data centers. The emergence of supercomputing and artificial intelligence applications has driven the demand for bandwidth, prompting large data center operators to explore high-density, low-latency, and low-power consumption solutions. LPOs, which do not have digital signal processor (DSP) components, naturally have low power consumption, low cost, and low latency compared to conventional pluggable optical transceivers, and can be widely used in AI and super-large data centers.

[0005] In a large data center or a large AI application scenario, the number of high-speed transceivers used can be as high as hundreds of thousands. In such a scenario, the transceivers will affect each other, which may in turn affect the power supply of the system, thereby causing noise in the power supply of the system. In addition, when some external environmental factors change, such as temperature, humidity, lightning, etc., the power supply of the system may also generate noise. Conventional high-speed optical modules use a direct current converter (DC-DC) to isolate each power supply when a DSP chip is used. LPO modules do not have a DSP chip and cannot isolate power supply noise, so system noise will be directly loaded to the power supply of the LPO module, affecting its performance, and in severe cases, the entire system may not work properly.

[0006] SUMMARY

[0007] The present application aims to provide a linear pluggable optical module and a high-stability low-power consumption implementation method for the linear pluggable optical module, which can save energy, reduce noise, and improve stability.

[0008] The embodiments of the present application are implemented by the following technical solutions:

[0009] In an aspect of the embodiments of the present application, a high-stability and low-power-consumption implementation method for a linear pluggable optical module is provided, including: arranging a Buck-Boost type DC-DC conversion module at a power supply input port of the linear pluggable optical module, the Buck-Boost type DC-DC conversion module isolating system power supply at a Host side and power supply of the linear pluggable optical module; arranging at least one DC-DC conversion module at an output end of the Buck-Boost type DC-DC conversion module, the DC-DC conversion module supplying power for a high-power laser.

[0010] Optionally, the DC-DC conversion modules arranged at the output end of the Buck-Boost type DC-DC conversion module include three, the three DC-DC conversion modules respectively supplying power for a silicon optical MZ modulator, a photoelectric conversion module and the high-power laser.

[0011] Optionally, a power output end of a gold finger module of the linear pluggable optical module is connected to an input end of a slow start module, an output end of the slow start module is connected to a power supply end of a Host module and an input end of the Buck-Boost type DC-DC conversion module, an output end of the Buck-Boost type DC-DC conversion module is connected to an input end of a first DC-DC conversion module, an input end of a second DC-DC conversion module, an input end of a third DC-DC conversion module, a power supply end of a linear driver and a power supply end of a linear TIA module, output ends of the first DC-DC conversion module, the second DC-DC conversion module and the third DC-DC conversion module are respectively connected to power supply ends of the high-power laser, the silicon optical MZ modulator and the photoelectric conversion module, an RF signal output end of the gold finger module of the linear pluggable optical module is connected to an RF signal input end of the linear driver, an output end of the linear driver is connected to an RF signal input end of the silicon optical MZ modulator, an RF signal output end of the photoelectric conversion module is connected to an RF signal input end of the linear TIA module, an RF signal output end of the linear TIA module is connected to an RF signal input end of the gold finger module of the linear pluggable optical module, a low-frequency signal output end of the Host module is connected to a low-frequency signal input end of the Buck-Boost type DC-DC conversion module and a low-frequency signal input end of the first DC-DC conversion module, and a low-frequency signal output end of the high-power laser is connected to a low-frequency signal input end of the silicon optical MZ modulator.

[0012] Optionally, the linear driver has a shut down function, and the Buck-Boost type DC-DC conversion module supplies power for the linear TIA module and the linear driver.

[0013] Optionally, in the implementation method of the embodiment of the application, the linear pluggable optical module is further provided with a fourth DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the input end of the fourth DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the power supply end of the linear driver, the linear driver is connected to the power supply end of the linear TIA module through a first switch, and the output end of the fourth DC-DC conversion module is connected to the power supply end of the linear TIA module through a second switch; the low-frequency signal output end of the master control module is further connected to the low-frequency signal input end of the fourth DC-DC conversion module.

[0014] Optionally, the first switch and the second switch are not closed or opened at the same time; when the first switch is closed and the second switch is opened, the linear TIA module is powered by the fourth DC-DC conversion module, or when the first switch is opened and the second switch is closed, the linear TIA module is powered by the Buck-Boost type DC-DC conversion module.

[0015] Optionally, the DC-DC conversion module powers the high-power laser through a first operational amplifier; the first operational amplifier adjusts the current flowing through the high-power laser according to the set voltage.

[0016] In another aspect of the embodiment of the application, a linear pluggable optical module configured to work according to any one of the above-mentioned high-stability and low-power-consumption implementation methods for linear pluggable optical modules is provided.

[0017] In still another aspect of the embodiment of the application, another high-stability and low-power-consumption implementation method for linear pluggable optical modules is provided, which includes: arranging a Buck-Boost type DC-DC conversion module at the power supply input port of the linear pluggable optical module, so as to isolate the system power supply on the Host side and the power supply of the linear pluggable optical module; and arranging at least one DC-DC conversion module at the power supply input port of the linear pluggable optical module, so as to power the high-power laser.

[0018] Optionally, the DC-DC conversion module includes three, three DC-DC conversion modules respectively power the silicon optical MZ modulator, power the photoelectric conversion module and power the high-power laser.

[0019] Optionally, the power output end of the gold finger module of the linear pluggable optical module is connected to the input end of the soft start module, the output end of the soft start module is connected to the power end of the main control module, the input end of the Buck-Boost type DC-DC conversion module, the input end of the first DC-DC conversion module, the input end of the second DC-DC conversion module and the input end of the third DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the power end of the linear driver and the power end of the linear TIA module; the output end of the first DC-DC conversion module, the output end of the second DC-DC conversion module and the output end of the third DC-DC conversion module are respectively connected to the power end of the high-power laser, the silicon optical MZ modulator and the photoelectric conversion module; the RF signal output end of the gold finger module of the linear pluggable optical module is connected to the RF signal input end of the linear driver, and the output end of the linear driver is connected to the RF signal input end of the silicon optical MZ modulator; the RF signal output end of the photoelectric conversion module is connected to the RF signal input end of the linear TIA module, and the RF signal output end of the linear TIA module is connected to the RF signal input end of the gold finger module of the linear pluggable optical module; the low-frequency signal output end of the main control module is connected to the low-frequency signal input end of the Buck-Boost type DC-DC conversion module and the low-frequency signal input end of the first DC-DC conversion module, and the low-frequency signal output end of the high-power laser is connected to the low-frequency signal input end of the silicon optical MZ modulator.

[0020] Optionally, the linear driver has a shut down function, and the Buck-Boost type DC-DC conversion module supplies power to the linear TIA module and the linear driver.

[0021] Optionally, in the implementation method of the embodiment, a fourth DC-DC conversion module is further arranged in the linear pluggable optical module; the output end of the soft start module is further connected to the input end of the fourth DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the power end of the linear driver and the power end of the linear TIA module through a first switch, and the output end of the fourth DC-DC conversion module is connected to the power end of the linear TIA module through a second switch; the low-frequency signal output end of the main control module is further connected to the low-frequency signal input end of the fourth DC-DC conversion module.

[0022] Optionally, the first switch and the second switch are not closed or opened at the same time; when the first switch is closed and the second switch is opened, the linear TIA module is powered by the fourth DC-DC conversion module, or when the first switch is opened and the second switch is closed, the linear TIA module is powered by the Buck-Boost type DC-DC conversion module.

[0023] In another aspect of the embodiments of the present application, another linearly pluggable optical module is provided, which is configured to work with the another high-stability and low-power-consumption implementation method for the linearly pluggable optical module.

[0024] The technical solutions of the embodiments of the present application have at least the following advantages and beneficial effects:

[0025] In the implementation method of the linearly pluggable optical module, the Buck-Boost type DC-DC conversion module arranged at the power supply input port of the linearly pluggable optical module can isolate the system power supply at the Host side and the power supply of the linearly pluggable optical module, realize the function of isolating the system end power supply noise, and further improve the stability of the application of the linearly pluggable optical module. The DC-DC conversion module directly provides current for the high-power laser, eliminates the headroom of the current type digital-to-analog converter, and reduces the power consumption of the linearly pluggable optical module. The micro-control work is performed by the master control module, only the digital low-level voltage needs to be ensured in the range of 0 to 0.8V, and the digital high-level voltage needs to be ensured in the range of VCC-0.8V to VCC, so that the MCU can work normally. Therefore, the MCU is not affected by the noise, and the system stability is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a schematic diagram of the Buck-Boost type DC-DC conversion module and the DC-DC conversion module connected to the linearly pluggable optical module according to the embodiments of the present application;

[0027] Fig. 2 is another schematic diagram of the Buck-Boost type DC-DC conversion module and the DC-DC conversion module connected to the linearly pluggable optical module according to the embodiments of the present application;

[0028] Fig. 3 is a schematic diagram of the Buck-Boost type DC-DC conversion module and the DC-DC conversion module connected to the linearly pluggable optical module according to the embodiments of the present application;

[0029] Fig. 4 is a schematic diagram of the Buck-Boost type DC-DC conversion module and the DC-DC conversion module connected to the linearly pluggable optical module according to the embodiments of the present application;

[0030] Fig. 5 is a schematic diagram of the 5-angle test TDECQ performance result according to the embodiments of the present application;

[0031] Fig. 6 is a schematic diagram of the circuit for supplying power to the high-power laser by the DC-DC conversion module according to the embodiments of the present application.

[0032] Icon: R1-first resistor, R2-second resistor, R3-third resistor, R4-fourth resistor, R5-fifth resistor, R6-sixth resistor, R7-seventh resistor, R8-eighth resistor, C1-first capacitor, C2-second capacitor, C3-third capacitor, C4-fourth capacitor, C5-fifth capacitor, A1-first operational amplifier, L1-first inductor, U1-DC-DC conversion module. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and superiorities of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0034] The embodiments of the present application provide a high-stability and low-power-consumption implementation method for a linear pluggable optical module. The method includes setting a Buck-Boost type DC-DC conversion module at a power supply input port of the linear pluggable optical module. The Buck-Boost type DC-DC conversion module isolates the system power supply at the Host side and the power supply of the linear pluggable optical module. The power supply output by the golden finger module of the linear pluggable optical module is modulated by the slow start to realize the slow power-on. The power supply is sent to the corresponding optical devices at the transmitting end or the receiving end after passing through the Buck-Boost type DC-DC conversion module. On the one hand, the power supply voltage is stabilized after passing through the Buck-Boost type DC-DC conversion module. On the other hand, the system noise brought by the golden finger module supply is isolated on one side due to the isolation of the Buck-Boost type DC-DC conversion module, which reduces the interference of the noise brought by the power supply and enhances the stability of the system. At least one DC-DC conversion module is set at the output end of the Buck-Boost type DC-DC conversion module, and the DC-DC conversion module supplies power for the high-power laser. The method of using the DC-DC conversion module to supply power for the high-power laser can eliminate the headroom of the current digital-to-analog converter (IDAC) and save power consumption.

[0035] In some embodiments, an example can set three DC-DC conversion modules at the power supply input side of the linear pluggable optical module of the embodiments of the present application. The three DC-DC conversion modules supply power for the silicon optical MZ modulator, the photoelectric conversion module, and the high-power laser, respectively. The DC-DC conversion module can adopt a buck type DC-DC conversion module or a boost type DC-DC conversion module, etc., which is selected according to the requirements of the functions of the devices accessed by the DC-DC conversion module.

[0036] In the present example, the DC-DC conversion module for powering the photoelectric conversion module of the receiving end adopts a boost type DC-DC conversion module, which can provide better performance support for the photoelectric conversion module. The DC-DC conversion module for powering the silicon optical MZ modulator and the high-power laser of the transmitting end adopts a buck type DC-DC conversion module. Since the voltage required for powering the silicon optical MZ modulator and the high-power laser is low, and the voltage of the system power supply of the pluggable optical module is high, which remains high even after passing through the Buck-Boost type DC-DC conversion module, therefore, the system power supply is reduced in voltage through the buck type DC-DC conversion module, and then powers the silicon optical MZ modulator and the high-power laser respectively, which reduces power consumption loss while ensuring the stable operation of the silicon optical MZ modulator and the high-power laser.

[0037] Specifically, the following further describes the specific connection and function implementation process of the system.

[0038] Referring to FIG. 1, the power output end of the gold finger module of the linear pluggable optical module is connected to the input end of the slow start module, the output end of the slow start module is connected to the power supply end of the main control module and the input end of the Buck-Boost type DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the input end of the first DC-DC conversion module, the input end of the second DC-DC conversion module, the input end of the third DC-DC conversion module, the power supply end of the linear driver and the power supply end of the linear TIA module; the output end of the first DC-DC conversion module, the output end of the second DC-DC conversion module and the output end of the third DC-DC conversion module are respectively connected to the power supply end of the high-power laser, the silicon optical MZ modulator and the photoelectric conversion module.

[0039] The RF signal output end of the gold finger module of the linear pluggable optical module is connected to the RF signal input end of the linear driver, and the output end of the linear driver is connected to the RF signal input end of the silicon optical MZ modulator.

[0040] The RF signal output end of the photoelectric conversion module is connected to the RF signal input end of the linear TIA module, and the RF signal output end of the linear TIA module is connected to the RF signal input end of the gold finger module of the linear pluggable optical module.

[0041] The low-frequency signal output end of the main control module is connected to the low-frequency signal input end of the Buck-Boost type DC-DC conversion module and the low-frequency signal input end of the DC-DC conversion module, and the low-frequency signal output end of the high-power laser is connected to the low-frequency signal input end of the silicon optical MZ modulator.

[0042] In the embodiment, when the system power supply is disturbed, the noise will come to the gold finger of the LPO along with the system power supply line, and the soft start module is a MOS chip for realizing the soft start effect of the subsequent device. The soft start module itself cannot isolate the noise, so the noise will come to the input stage of the Buck-Boost type DC-DC conversion module along with the soft start module. The main control module part is for micro control work, and only needs to ensure that the digital low voltage is in the range of 0 to 0.8V and the digital high voltage is in the range of VCC-0.8V to VCC, so that the main control module can work normally. Therefore, the main control module is not affected by the noise and can be directly powered by the power supply after the soft start module. Since the working principle of the DC / DC conversion module is mainly based on the energy storage and release principle of the inductor and the switching control of the switching tube, and a sufficient filter capacitor is provided at the output stage, the input noise will be converted into energy and stored during the charging stage. At this time, the noise disappears. When the switching tube is in the off state, the input voltage and the inductor charge the output capacitor together. At this time, the inductor releases the energy absorbed before, thereby maintaining the stability of the output voltage. Based on this working principle, the output end of the DC-DC conversion module is not affected by the noise of the input end, which is equivalent to that the DC-DC conversion module isolates the input noise. Therefore, the power supply of each component of the DC-DC conversion module output is clean, and the noise of the system power supply cannot affect the working state of each component in the LPO, thereby improving the stability of the LPO and enhancing the performance of the LPO.

[0043] Since the power supply voltage required by many components in the LPO module is 3.3V, if a Buck type DC-DC conversion module is used, the input power supply may be lower than or equal to 3.3V, at which time the Buck type DC-DC conversion module cannot work normally. Therefore, in order to ensure that the LPO still has the ability of noise isolation and can work normally when the input voltage is lower than or equal to 3.3V, a Buck-Boost type DC-DC conversion module is used in the embodiment.

[0044] On the other hand, the modulator used in the embodiment is a silicon optical MZ modulator, also known as a silicon optical Mach-Zehnder modulator. Since the linearity of the module is an important indicator for evaluating the overall performance of the LPO, the currently widely used modulator on the market is still an electro-absorption modulator (EML), the linearity range of which is greatly affected by the negative voltage. The change of the environmental temperature will also affect the linearity of the EML modulator. In comparison, the silicon optical MZ modulator has very good linearity in the entire working range. Therefore, using the silicon optical MZ modulator can significantly improve the performance of the module.

[0045] In addition, the embodiment uses a high-power laser to provide a light source for a silicon optical MZ modulator, and the silicon optical MZ modulator can convert an RF electrical signal into an optical signal. The high-power laser needs to provide sufficient current to make the output optical power meet the requirements. The conventional way to provide the current is to use a dedicated IDAC device, but the IDAC device has a headroom, which will make part of the energy consumed by the IDAC device. For example, an IDAC device commonly used in some prior art has a headroom of 0.3V at a current output of 150mA, which means that the LPO module has 4x0.3x0.15=0.18W of power wasted on the IDAC device. When the module works in a high-temperature environment, more current is needed, and more power is consumed by the headroom. Therefore, the embodiment directly uses a DC-DC conversion module to output current to the high-power laser, and the output of the DC-DC conversion module is directly and completely loaded to the high-power laser, which can completely eliminate the headroom and save power consumption.

[0046] In an implementable embodiment of the embodiment of the present application, referring to FIG. 2, a fourth DC-DC conversion module is further arranged in the pluggable optical module, and the linear TIA module is powered by the fourth DC-DC conversion module or the Buck-Boost type DC-DC conversion module. If all components are powered by the Buck-Boost type DC-DC converter, the overall power consumption of the LPO may be increased. Because the DC-DC conversion module itself has a certain conversion efficiency, all components supplied by the DC-DC conversion module output will be affected by the conversion efficiency, and the reduced power consumption may not be outstanding, therefore, optimization can be made based on the target of further reducing power consumption.

[0047] For example, when the linear driver has a shut down function, the linear TIA module is powered by the Buck-Boost type DC-DC conversion module, and if the linear driver does not have a shut down function, the linear TIA module is powered by the fourth DC-DC conversion module.

[0048] Please refer to Fig. 2, when the fourth DC-DC conversion module is arranged in the pluggable optical module of the embodiment of the application, the power output end of the gold finger module of the linear pluggable optical module is connected to the input end of the slow start module, the output end of the slow start module is connected to the input end of the Buck-Boost type DC-DC conversion module and the power end of the master control module, the output end of the Buck-Boost type DC-DC conversion module is respectively connected to the input end of the first DC-DC conversion module, the input end of the second DC-DC conversion module, the input end of the third DC-DC conversion module, the input end of the fourth DC-DC conversion module and the power end of the linear driver, the output end of the Buck-Boost type DC-DC conversion module is also connected to the power end of the linear TIA module through the first switch, the output end of the fourth DC-DC conversion module is connected to the power end of the linear TIA module through the second switch; the output end of the first DC-DC conversion module, the output end of the second DC-DC conversion module and the output end of the third DC-DC conversion module are respectively connected to the power end of the high-power laser, the power end of the silicon optical MZ modulator and the power end of the photoelectric conversion module. The RF signal output end of the gold finger module of the linear pluggable optical module is connected to the RF signal input end of the linear driver, the output end of the linear driver is connected to the RF signal input end of the silicon optical MZ modulator. The RF signal output end of the photoelectric conversion module is connected to the RF signal input end of the linear TIA module, the RF signal output end of the linear TIA module is connected to the RF signal input end of the gold finger module of the linear pluggable optical module. The low-frequency signal output end of the master control module is connected to the low-frequency signal input end of the Buck-Boost type DC-DC conversion module, the low-frequency signal input end of the fourth DC-DC conversion module and the low-frequency signal input end of the first DC-DC conversion module, the low-frequency signal output end of the high-power laser is connected to the low-frequency signal input end of the silicon optical MZ modulator.

[0049] In some possible embodiments, referring to FIG. 3, the embodiments of the present application can also provide a high-stability and low-power-consumption implementation method for a linear pluggable optical module, which comprises a Buck-Boost type DC-DC conversion module arranged at a power supply input port of the linear pluggable optical module, the Buck-Boost type DC-DC conversion module isolates the system power supply at the Host side from the power supply of the linear pluggable optical module, and at least one DC-DC conversion module is further arranged at the power supply input port of the linear pluggable optical module, the DC-DC conversion module supplies power for a high-power laser. The power supply output by the golden finger module of the linear pluggable optical module is modulated by the slow start to realize slow power-on, and then is sent to the linear driver at the transmitting end and the linear TIA module at the receiving end for power supply after passing through the Buck-Boost type DC-DC conversion module. The power supply for the high-power laser at the transmitting end or the device at the receiving end is output by the DC-DC conversion module. On the one hand, the power supply voltage is stabilized after passing through the Buck-Boost type DC-DC conversion module, and on the other hand, the system noise brought by the golden finger module supply is isolated on one side due to the isolation of the Buck-Boost type DC-DC conversion module, the noise interference brought by the power supply is reduced, and the stability of the system is enhanced. At least one DC-DC conversion module is further arranged at the power supply input port of the linear pluggable optical module after the slow start to supply power for the high-power laser. The power supply for the high-power laser by the DC-DC conversion module can stabilize the voltage and eliminate the headroom of the current-mode digital-to-analog converter (IDAC), thereby saving the power consumption.

[0050] In some embodiments, for example, the at least one DC-DC conversion module arranged at the power supply input port of the linear pluggable optical module after the slow start specifically comprises three DC-DC conversion modules, which respectively supply power for a silicon optical MZ modulator, an optoelectronic conversion module and a high-power laser.

[0051] Specifically, the following further describes the specific connection and function implementation process of the system.

[0052] Referring to Fig. 3, the power output end of the gold finger module of the linear pluggable optical module is connected to the input end of the slow start module, the output end of the slow start module is connected to the power end of the main control module, the input end of the Buck-Boost type DC-DC conversion module, the input end of the first DC-DC conversion module, the input end of the second DC-DC conversion module and the input end of the third DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the power end of the linear driver and the power end of the linear TIA module; the output end of the first DC-DC conversion module, the output end of the second DC-DC conversion module and the output end of the third DC-DC conversion module are respectively connected to the power end of the high-power laser, the power end of the silicon optical MZ modulator and the power end of the photoelectric conversion module.

[0053] The RF signal output end of the gold finger module of the linear pluggable optical module is connected to the RF signal input end of the linear driver, and the output end of the linear driver is connected to the RF signal input end of the silicon optical MZ modulator. The RF signal output end of the photoelectric conversion module is connected to the RF signal input end of the linear TIA module, and the RF signal output end of the linear TIA module is connected to the RF signal input end of the gold finger module of the linear pluggable optical module.

[0054] The low-frequency signal output end of the main control module is connected to the low-frequency signal input end of the Buck-Boost type DC-DC conversion module and the low-frequency signal input end of the first DC-DC conversion module, and the low-frequency signal output end of the high-power laser is connected to the low-frequency signal input end of the silicon optical MZ modulator.

[0055] When the system power supply is disturbed, the noise will come to the gold finger of the LPO along with the system power line, and the noise will come to the input stage of the Buck-Boost type DC-DC conversion module along with the soft start module. Since the working principle of the DC / DC conversion module is mainly based on the energy storage and release principle of the inductor, and the switching control of the switching tube, and sufficient filter capacitor is provided at the output stage, the input stage noise will also be converted into energy storage during the charging stage, at which time the noise disappears. When the switching tube is in the off state, the input voltage and the inductor together charge the output capacitor, at which time the inductor releases the energy absorbed before, thereby maintaining the stability of the output voltage. Based on this working principle, the output end of the DC-DC conversion module is not affected by the noise of the input end, which is equivalent to that the DC-DC conversion module isolates the input noise. Therefore, the output power supply of the DC-DC conversion module is a clean power supply, and the system power supply noise cannot affect the working state of each component in the LPO, thereby improving the stability of the LPO and improving the performance of the LPO. It can be seen that the device connected to the output end of the Buck-Boost type DC-DC conversion module can effectively isolate the noise through the Buck-Boost type DC-DC conversion module, and the DC-DC conversion module can also stabilize the voltage of the transmitting end or receiving end device connected to its output end.

[0056] Referring to FIG. 4, in an implementable embodiment of the embodiment of the present application, a fourth DC-DC conversion module is further arranged in the pluggable optical module, and the linear TIA module is powered by the fourth DC-DC conversion module or the Buck-Boost type DC-DC conversion module.

[0057] For example, when the linear driver has a shut down function, the linear TIA module is powered by the Buck-Boost type DC-DC conversion module, and if the linear driver does not have a shut down function, the linear TIA module is powered by the fourth DC-DC conversion module.

[0058] Referring to FIG. 4, in the pluggable optical module of the embodiment of the present application, when the fourth DC-DC conversion module is arranged, the output end of the soft start module is connected to the input end of the fourth DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the linear driver, the power end of the linear TIA module is connected through the first switch, and the power end of the linear TIA module is connected through the second switch. The low-frequency signal output end of the main control module is also connected to the low-frequency signal input end of the fourth DC-DC conversion module. In this way, the linear TIA module can also be selectively powered by the Buck-Boost type DC-DC conversion module or the fourth DC-DC conversion module.

[0059] The difference between the connection mode as shown in FIG. 1 and the connection mode as shown in FIG. 3 is that, in the case of using the connection mode as shown in FIG. 1, the rest of the components except the master control module are isolated from the power supply by DC-DC conversion modules, in which the third DC-DC conversion module used for the power supply of the photoelectric conversion module is a Boost type voltage converter. The fourth DC-DC conversion module for the power supply of the linear TIA module has two types of converters, Buck type and Buck-Boost type, which correspond to the following two cases respectively:

[0060] 1. When the linear driver used has a shut down function, the Buck-Boost type DC-DC conversion module is selected to supply power to the linear TIA module, that is, the first switch A is closed and the second switch B is opened. Since the linear driver and the linear TIA module are the most energy-consuming parts of the LPO module, the energy consumption of these two components accounts for 70% of the power consumption of the LPO whole machine. In this case, the method to reduce the power consumption of the LPO whole machine is to reduce the output voltage of the Buck-Boost type DC-DC conversion module to the limit at which the linear driver and the linear TIA module can work normally.

[0061] The linear driver and linear TIA module data in Table 1 shows the voltage range in which the linear driver and linear TIA module can work normally as recorded in the manual of the commonly used linear driver and linear TIA module in actual application.

[0062] Linear driver and linear TIA module data in Table 1

[0063] As can be seen from the above table, the output voltage of the Buck-Boost type DC-DC conversion module can be set to at least 3.135V. However, when the chip manufacturer formulates the data manual, a margin is generally left, and the ultimate working capacity of the DC-DC conversion module can be finally selected by experiment. For example, in the LPO module shown in Table 1, the working voltage of the DC-DC conversion module is finally selected to be 2.97V, compared with the normal power supply voltage, this method can reduce the power consumption of the LPO whole machine by 10%.

[0064] 2. When the linear driver used does not have a shut down function, the Buck type DC-DC conversion module should be selected to supply power to the linear TIA module, that is, the first switch A is open and the second switch B is closed. The purpose of this is to improve the responsivity and reduce the reflection during the packaging coupling process. Because when the photoelectric conversion module is coupled, the PCB board temperature cannot be effectively cooled, if the linear TIA module and the linear driver work at the same time, the temperature of the PCB board will rise rapidly, which will cause the PCB board and the optical components placed on the PCB board to deform slightly. The best optical position obtained under the condition of deformation is not the best optical position during normal work, so it will cause the RX end responsivity to change, the reflection to increase and other problems. The only solution is to reduce the power consumption of the whole machine during the coupling process of the photoelectric conversion module, and reduce the temperature of the PCB board. Therefore, in this case, the power supply of the linear TIA module and the linear driver needs to be separated, and the power supply of the linear driver is turned off when the photoelectric conversion module is coupled, so that the linear driver does not work, and the power consumption and the temperature of the PCB board are reduced. In addition, in other specific working scenarios, the minimum limit working voltage of the linear TIA module and the linear driver can also be found according to the needs of the experiment, and the power consumption of the whole machine is reduced.

[0065] And in the case of the connection mode shown in Figure 3, the connection mode of the system can be more flexible. If all components are not powered through the Buck-Boost type DC-DC converter, some transmitter or receiver devices may also need to be powered through the Buck-Boost type DC-DC converter and DC-DC converter in turn, resulting in an increase in the power consumption of the LPO to some extent. This way can flexibly connect the device to the Buck-Boost type DC-DC converter or DC-DC converter according to the needs, further reducing the power consumption of the system. In addition, the connection mode of the embodiment of the application is not limited to the above examples. In fact, other reasonable modification schemes according to the foregoing working ideas according to the actual needs of those skilled in the art are within the scope of the present application.

[0066] In addition to the advantages of isolating system noise and reducing LPO overall power consumption, the pluggable optical module of the embodiment has another important advantage that the LPO module works very stably and does not change in performance with changes in system power supply voltage. If the LPO module is not powered by the power supply method of the embodiment, the following situation may occur in the application process: the system power supply of manufacturer A equipment is 3.3V, at this time, the operating points of each component of the LPO module are adjusted to the optimum according to 3.3V; but the system power supply of manufacturer B equipment is 3.15V, at this time, the optimum operating points of some components of the LPO module change, resulting in the performance of the LPO being affected. For example, when the LPO module uses a silicon light solution, 3.3V and 3.15V power supply will make the heater point of the modulator at different operating points, which shows that the linearity of the eye diagram changes and the transmitter dispersion eye diagram closure cost (TDECQ) changes, thereby affecting the performance of the LPO.

[0067] However, when the method in the embodiment is used, the operating voltage of all key components is constant and does not change with changes in system power supply voltage, thereby greatly improving the stability of the LPO module. Figure 5 is the 5-angle test TDECQ performance result after the optimization embodiment is used, showing the TDECQ performance of the LPO module in the 5-angle test, which can be seen to be very stable and almost not affected by the power supply voltage.

[0068] In the foregoing description of the implementation method of the linear pluggable optical module of the embodiment, the related circuit of the DC-DC conversion module for powering the high-power laser is further described.

[0069] In some possible implementations, the DC-DC conversion module powers the high-power laser through a first operational amplifier. The first operational amplifier adjusts the current flowing through the high-power laser according to the set voltage.

[0070] As a specific implementation case, in the embodiment, referring to Figure 6, the circuit used by the DC-DC conversion module to power the high-power laser includes an output voltage adjustment module, a plurality of resistors, a plurality of capacitors, an inductor, and a first operational amplifier A1.

[0071] One end of the first capacitor C1, one end of the first resistor R1, the PVIN end and the AVIN end of the DC-DC conversion module U1 are connected to a direct current source; the other end of the first resistor R1 is connected to the MODE / PG end of the DC-DC conversion module U1, one end of the second resistor R2 is connected to the EN end of the DC-DC conversion module U1, the other end of the second resistor R2, the other end of the first capacitor C1, and the GND end, the AGNG end, and the PGND end of the DC-DC conversion module U1 are grounded.

[0072] The SW end of the DC-DC conversion module is connected to one end of the first inductor L1, the other end of the first inductor L1 is connected to one end of the fifth resistor R5, one end of the second capacitor C2, one end of the third capacitor C3, one end of the fourth capacitor C4, one end of the sixth resistor R6, one end of the seventh resistor R7 and the inverting input end of the first operational amplifier A1, the other end of the fifth resistor R5, the other end of the second capacitor C2, one end of the third resistor R3 and one end of the fourth resistor R4 are connected to the FB end of the DC-DC conversion module, the other end of the fourth resistor R4 is connected to the output voltage regulation module, the other end of the third capacitor C3, the other end of the fourth capacitor C4 and the other end of the third resistor R3 are grounded, one end of the fifth capacitor C5, the other end of the sixth resistor R6 and the other end of the seventh resistor R7 are connected to the non-inverting input end of the DC-DC module U1, and the other end of the fifth capacitor C5 is grounded.

[0073] The output end of the first operational amplifier A1 outputs a voltage through the eighth resistor R8 and is connected to the high-power laser.

[0074] For example, the model of the DC-DC conversion module U1 can adopt TPS62065.

[0075] In an implementable embodiment of the application, the voltage output by the DC-DC conversion module U1 is directly supplied to the anode of the high-power laser, and the cathode of the laser is grounded. The sixth resistor R6 and the seventh resistor R7 are connected to the first operational amplifier A1 together, the voltage difference between the sixth resistor R6 and the seventh resistor R7 is amplified by 50 times through the first operational amplifier A1, the microcontroller collects the amplified voltage, and through certain operation, the current flowing through the high-power laser can be detected. By setting different output voltages through the voltage regulation module DAC_SET, the current flowing through the high-power laser can be adjusted.

[0076] The above is only a preferred embodiment of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A high stability low power consumption implementation method for linear pluggable optical modules, characterized in that, The application relates to a linearly pluggable optical module. A Buck-Boost type DC-DC conversion module is arranged at a power supply input port of the linearly pluggable optical module, the Buck-Boost type DC-DC conversion module isolates system power supply on a Host side and power supply of the linearly pluggable optical module; At least one DC-DC conversion module is arranged at an output end of the Buck-Boost type DC-DC conversion module, and the DC-DC conversion module supplies power for a high-power laser.

2. The method for realizing high stability and low power consumption of a linear pluggable optical module according to claim 1, characterized in that, The DC-DC conversion module arranged at the output end of the Buck-Boost type DC-DC conversion module comprises three DC-DC conversion modules, the three DC-DC conversion modules supply power for a silicon light MZ modulator, supply power for an optoelectronic conversion module and supply power for the high-power laser.

3. The method for realizing high stability and low power consumption of linearly pluggable optical module according to claim 1 or 2, characterized in that, A power output end of a golden finger module of the linearly pluggable optical module is connected with an input end of a slow start module, an output end of the slow start module is connected with a power supply end of a master control module and an input end of the Buck-Boost type DC-DC conversion module, an output end of the Buck-Boost type DC-DC conversion module is connected with an input end of a first DC-DC conversion module, an input end of a second DC-DC conversion module, an input end of a third DC-DC conversion module, a power supply end of a linear driver and a power supply end of a linear TIA module; An output end of the first DC-DC conversion module, an output end of the second DC-DC conversion module and an output end of the third DC-DC conversion module are respectively connected with a power supply end of the high-power laser, a power supply end of the silicon light MZ modulator and a power supply end of the optoelectronic conversion module; An RF signal output end of the golden finger module of the linearly pluggable optical module is connected with an RF signal input end of the linear driver, and an output end of the linear driver is connected with an RF signal input end of the silicon light MZ modulator; An RF signal output end of the optoelectronic conversion module is connected with an RF signal input end of the linear TIA module, and an RF signal output end of the linear TIA module is connected with an RF signal input end of the golden finger module of the linearly pluggable optical module; A low-frequency signal output end of the master control module is connected with a low-frequency signal input end of the Buck-Boost type DC-DC conversion module and a low-frequency signal input end of the first DC-DC conversion module, and a low-frequency signal output end of the high-power laser is connected with a low-frequency signal input end of the silicon light MZ modulator.

4. The method for realizing high stability and low power consumption of linear pluggable optical module according to claim 2 or 3, characterized in that, The linear driver has a shut down function, and the Buck-Boost type DC-DC conversion module supplies power for the linear TIA module and the linear driver.

5. The method for high stability and low power consumption of linear pluggable optical module according to claim 3 or 4, characterized in that, A fourth DC-DC conversion module is further arranged. The output end of the Buck-Boost type DC-DC conversion module is also connected to the input end of a fourth DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the power supply end of a linear driver, the linear driver is connected to the power supply end of a linear TIA module through a first switch, and the output end of the fourth DC-DC conversion module is connected to the power supply end of the linear TIA module through a second switch. The low-frequency signal output end of the main control module is also connected to the low-frequency signal input end of the fourth DC-DC conversion module.

6. The method of claim 5, wherein the high stability and low power consumption of the linear pluggable optical module is achieved by, The first switch and the second switch are not closed or opened at the same time; when the first switch is closed and the second switch is opened, the linear TIA module is powered by the fourth DC-DC conversion module, or when the first switch is opened and the second switch is closed, the linear TIA module is powered by the Buck-Boost type DC-DC conversion module.

7. The method for realizing high stability and low power consumption of linear pluggable optical module according to any one of claims 1-6, characterized in that, The DC-DC conversion module powers the high-power laser through a first operational amplifier; the first operational amplifier adjusts the current flowing through the high-power laser according to the set voltage.

8. A linear pluggable optical module, characterized by, Configured to work in the high stability and low power consumption implementation method for the linear pluggable optical module as claimed in any one of claims 1-7.

9. A high stability low power consumption implementation method for linear pluggable optical modules, characterized in that, Comprising: A Buck-Boost type DC-DC conversion module is arranged at the power supply input port of the linear pluggable optical module, which isolates the system power supply on the Host side from the power supply of the linear pluggable optical module; At least one DC-DC conversion module is also arranged at the power supply input port of the linear pluggable optical module, which powers the high-power laser.

10. The method of claim 9, wherein the high stability and low power consumption of the linear pluggable optical module is achieved by, The DC-DC conversion module includes three, and the three DC-DC conversion modules respectively power the silicon optical MZ modulator, the photoelectric conversion module, and the high-power laser.

11. The method for realizing high stability and low power consumption of a linearly pluggable optical module according to claim 9 or 10, characterized in that, The power supply output end of the gold finger module of the linear pluggable optical module is connected to the input end of a slow start module, the output end of the slow start module is connected to the power supply end of a main control module, the input end of a Buck-Boost type DC-DC conversion module, the input end of a first DC-DC conversion module, the input end of a second DC-DC conversion module, and the input end of a third DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the power supply end of a linear driver and a linear TIA module; The output end of the first DC-DC conversion module, the output end of the second DC-DC conversion module, and the output end of the third DC-DC conversion module are respectively connected to the power supply end of the high-power laser, the silicon optical MZ modulator, and the photoelectric conversion module; The RF signal output end of the gold finger module of the linear pluggable optical module is connected to the RF signal input end of the linear driver, and the output end of the linear driver is connected to the RF signal input end of the silicon optical MZ modulator; The RF signal output end of the photoelectric conversion module is connected to the RF signal input end of the linear TIA module, and the RF signal output end of the linear TIA module is connected to the RF signal input end of the gold finger module of the linear pluggable optical module. The low-frequency signal output end of the main control module is connected to the low-frequency signal input end of the Buck-Boost type DC-DC conversion module and the low-frequency signal input end of the first DC-DC conversion module, and the low-frequency signal output end of the high-power laser is connected to the low-frequency signal input end of the silicon optical MZ modulator.

12. The method for high stability and low power consumption implementation of linear pluggable optical module according to claim 10 or 11, characterized in that, The linear driver has a shut down function, and the Buck-Boost type DC-DC conversion module supplies power to the linear TIA module and the linear driver respectively.

13. The method for high stability and low power consumption implementation of linear pluggable optical module according to claim 11 or 12, characterized in that, A fourth DC-DC conversion module is further provided; the output end of the slow start module is further connected to the input end of the fourth DC-DC conversion module, the output end of the Buck-Boost type DC-DC conversion module is connected to the power supply end of the linear driver, and the power supply end of the linear TIA module is connected through a first switch, and the power supply end of the linear TIA module is connected through a second switch; The low-frequency signal output end of the main control module is further connected to the low-frequency signal input end of the fourth DC-DC conversion module.

14. The method of claim 13, wherein the high stability and low power consumption of the linear pluggable optical module is achieved by, The first switch and the second switch are not closed or opened at the same time; when the first switch is closed and the second switch is opened, the linear TIA module is powered by the fourth DC-DC conversion module, or when the first switch is opened and the second switch is closed, the linear TIA module is powered by the Buck-Boost type DC-DC conversion module.

15. A linear pluggable optical module, characterized by, The linear pluggable optical module is configured to work in the high-stability and low-power consumption implementation method according to any one of claims 9-14.

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