60 results about "QSFP" patented technology

The invention provides an FPGA (Field Programmable Gate Array) accelerator card with a hard synchronization function, which comprises an FPGA chip used for processing a computing task issued by a universal processor system, the FPGA chip is provided with a storage module and a power supply module, and external interfaces comprise a PCIE (Peripheral Component Interface Express) interface, a QSFP (Quad Small Form-factor Pluggable) optical interface, an SMA (Shape Memory Alloy) interface and an RS422 interface. And the PCIE interface and the QSFP optical interface are respectively interconnected with the high-speed port of the FPGA module at a high speed. And the storage module, the SMA interface and the RS422 interface are all connected to a general I / O pin of the FPGA. According to the invention, the synchronization signal from the external device can be received, and the PCIE message interrupt is sent to the universal processor system end through the PCIE interface, so that the synchronization time base establishment between the universal processor system and the acceleration card external device is realized. And the message interruption of the PCIE is used as a strong real-time synchronization mode, so that the accurate control on the external equipment can be realized. Meanwhile, the PCIE module and the QSFP optical interface can achieve high-speed data transmission, and the acceleration card supporting strong real-time processing is formed by combining high-density parallel computing of the FPGA.

The invention relates to the technical field of computers, and discloses an AI server architecture system which comprises a case. The CPU module is installed on the lower layer of the case and comprises a mainboard, a first NVMe module, an IO board, a first PCIe module and an SATA module. The GPU module is installed on the upper layer of the case and comprises a UBB board card, a fixing frame and a plurality of AI board cards, the AI board cards are connected with slots in the UBB board card through golden finger dual-density connectors, and the adjacent AI board cards are in signal connection; the HIB module and the QSFP-56 module are installed on the upper layer of the case, the HIB module is connected with the UBB board card through the BTB connector, the HIB module is in signal connection with the mainboard, the second PCIe module and the second NVMe module, and the QSFP-56 module is in signal connection with the UBB board card. According to the invention, the computing and image processing capabilities of the server can be improved, the cost of switches and network cards is saved, the expansion is convenient, and the flexibility is good.

An optical connector holding two or more LC-type optical ferrules is provided. The optical connector includes an outer body, an inner front body accommodating the two or more LC-type optical ferrules, ferrule springs for urging the optical ferrules towards a mating receptacle, and a back body for supporting the ferrule springs. The outer body and the inner front body are configured such that four LC-type optical ferrules are accommodated in a small form-factor pluggable (SFP) transceiver footprint or eight LC-type optical ferrules are accommodated in a quad small form-factor pluggable (QSFP) transceiver footprint. A mating receptacle (transceiver or adapter) includes internal alignment slots configured to accept a corresponding alignment key on connector outer housing to ensure alignment and orientation for maximum signal transfer between opposing ferrule end faces.

The invention relates to a QSFP-DD packaging 400G optical module structure, and belongs to the technical field of optical modules. Comprising a module upper cover, a module base and a pull ring, the module upper cover and the module base form a containing cavity, an MPO optical fiber adapter and a module circuit board assembly are arranged in the containing cavity, and first cooling fins and second cooling fins are arranged on the module upper cover and the module base respectively; the module circuit board assembly comprises a PCB, a heat dissipation block is arranged on the PCB, and a heat dissipation table is arranged on the module upper cover. A module upper cover and a rubber coating area are arranged on the inner side of the pull ring, a pull ring handle is arranged at one end of the pull ring, and the pull ring handle is flush with the bottom of the module base. According to the QSFP-DD packaging 400G optical module structure provided by the invention, the heat dissipation efficiency is remarkably improved, the MPO jumper wire insertion space is optimized, more internal space of the PCB is provided, the signal loss is reduced, the connection stability of the light-transmitting assembly and the silicon optical assembly is enhanced, and the optical signal loss is reduced.

A cable assembly comprising a connector with a termination that enables high density and high signal integrity. Shields of cables are terminated to a paddle card via a conductive structure attached to a surface of the paddle card. The signal conductors of the cables are terminated to pads on the paddle card that are exposed within openings of the conductive structure. Such a structure creates a ground structure per cable that provides low insertion loss and low crosstalk, even when multiple cables are aligned side by side and terminated in one or more rows. The cables may be drainless, enabling a large number of cables, such as eight cables, to be packed within the width of a paddle card specified in high density standards such as QSFP-DD or OSFP. The cables may nonetheless have large diameter signal conductors, enabling 2.5 or 3 meter assemblies with less than 17 dB insertion loss.

The invention relates to the technical field of optical amplifiers, in particular to an optical amplifier based on QSFP-DD packaging. The optical amplifier comprises a packaging shell, a circuit board, an optical assembly and a heating piece. The circuit board is arranged in the packaging shell, and a connecting module is arranged at one end, penetrating out of the shell, of the circuit board; the optical assembly comprises an erbium-doped optical fiber which is located in the packaging shell and arranged on one side of the circuit board in the thickness direction; the heating element is arranged in the packaging shell and is positioned between the erbium-doped optical fiber and the circuit board; wherein the circuit board is electrically connected to the heating element, and the heating element acts on the Er-doped optical fiber so as to adjust the temperature of the Er-doped optical fiber. The optical amplifier based on QSFP-DD packaging is smaller in size, can meet the arrangement requirement of a high-density data center cabinet, and is more stable in transmission performance during working.

The utility model provides a novel QSFP-DD packaging optical module comprising a pedestal, the left side of the pedestal is detachably connected with a reset pull ring, and the interior of the pedestal is fixedly connected with a PCB device group. According to the novel QSFP-DD packaging optical module, the base, the reset pull ring, the upper cover, the heat dissipation teeth, the heat dissipation cover and other structures are arranged, the base serves as a core support, the PCB device set, the reset pull ring and the reset spring are accurately positioned and stably installed through a limiting groove, an installation cavity and a spring groove in the base, cooperative work is ensured, the reset pull ring is installed on the left side of the base, and the upper cover is arranged on the left side of the base. The state of the reset spring can be mastered in real time through the observation groove; the upper cover and the base are tightly connected through screws, internal components are covered and protected, external adverse factors are resisted; assembly and maintenance are also facilitated through screw connection; the heat dissipation teeth and the heat dissipation cover construct an efficient heat dissipation system, and heat dissipation is rapid; influence of over-high temperature on performance is avoided, and stability, reliability and service life of the optical module are improved.

A pluggable optical protection switch (OPS, 103) is capable of selecting between two fiber optic lines (109, 111), where the selected fiber optic line is an active fiber optic line and the unselected fiber optic line is a redundant spare fiber optic line. The pluggable OPS may be designed as a four-channel small pluggable (QSFP) package type, such as a QSFP-DD package type or a QSFP 28 package type.

The utility model discloses a QSFP-DDQSFP-DD800 module power supply protection circuit, which is characterized in that an input power supply is connected with a voltage input end of a load switch, a voltage output end of the load switch is connected with a power supply pin of a protected optical module, an enabling end of the load switch is electrically connected with a first end of a programmable device, and the first end of the programmable device drives the load switch to enable; the load switch detects the working current of the protected optical module and outputs the working current through the current output end of the load switch, and the current output end of the load switch is connected with the programmable device through the analog-to-digital conversion circuit to serve as the second end of the current detection pin; the ModPrsL pin of the protected optical module is connected with the third end of the programmable device, and the ModPrsL pin outputs a switching signal for protecting whether the test board exists in the optical module or not; and the IntL pin of the protected optical module is connected with the fourth end of the programmable device, and outputs a switching signal indicating whether the protected optical module is abnormal or not. According to the utility model, the power supply safety problem of the pluggable module to the communication interface board card is solved.

The utility model relates to a QSFP DD optical module test tool, which is characterized in that a limit block is fixed at the edge of a test plate, a tool block fixedly connected with the limit block is arranged on the side surface of the test plate, the limit block is made of nonmetal, the tool block is made of metal which is softer than zinc alloy, an assembly cavity is arranged on the end surface of the limit block close to the test plate, and the assembly cavity is provided with a through hole. The assembling cavity penetrates through the side face, close to the tool block, of the limiting block, an adapter which is electrically connected with the testing plate and used for being matched with the QSFP DD optical module to be tested in an inserted mode is arranged in the assembling cavity, and a testing cavity which is communicated with the assembling cavity and used for inserting the QSFP DD optical module is formed in the side face of the tool block in a penetrating mode. The beneficial effects are that the surface of a structural member in the optical module is not easy to scratch, the probability of causing the bad optical module is reduced, the limiting block and the tool block are easier to process and are not easy to damage, and the tool block is not fixed on the test board, so that the test board with a small size can be used to meet different test requirements.

The utility model discloses a portable optical module coding box which comprises an upper shell, the bottom of the upper shell is movably connected with a bottom shell, the top of the bottom shell is movably connected with a PCB, the top of the PCB is fixedly connected with a DC power supply, the top of the PCB is fixedly connected with a TYPE C, the top of the PCB is fixedly connected with a QSFP DD seat, the top of the PCB is fixedly connected with an XFP seat, and the top of the XFP seat is fixedly connected with an optical module. The top of the PCB is fixedly connected with an SFP + seat, through the design of the smaller upper shell and the smaller base, the optical module coding box is smaller in size and convenient to carry, through the TYPE C power supply and the TYPE DC power supply, the optical module coding box can achieve universality of a mobile phone power line and an optical module coding box power line, a cage corresponding to the optical module coding box is omitted, the cost is reduced, and the optical module coding box is convenient to use. Therefore, the optical module coding box is more attractive in appearance, solves the problem that secondary sale is affected due to the fact that the surface of a shell of a product is scratched in the coding process, and can be compatible with coding of three different series of products.

The invention discloses an ultra-wideband transient multi-electromagnetic physical quantity synchronous measurement method and system, and the method comprises the steps: designing an electric field sensor based on a monopole rod-shaped electrically small antenna principle, and designing a magnetic field sensor based on a Faraday's law of electromagnetic induction; designing a voltage sensor based on a self-integration mode, and designing a current sensor based on a broadband Rogowski coil; based on a digital sampling technology of an FPGA, a digital processor is designed, sampling data collected by an electric field sensor, a magnetic field sensor, a voltage sensor and a current sensor are collected through the digital processor, the sampling data are transmitted to an upper computer through a QSFP module, and the sampling data are processed and displayed through the upper computer. The scheme can be effectively applied to application scenes of transient electromagnetic environment online monitoring, fault diagnosis, radiation source accurate positioning and the like of high-voltage power equipment.

The utility model relates to the technical field of photoelectric communication, in particular to a QSFP (Quad Small Form-factor Pluggable) active optical cable assembly, which comprises a shell, a first mounting block and a second mounting block are symmetrically arranged on two sides of the shell respectively, one side of each of the first mounting block and the second mounting block is movably connected with a cap, a connector is movably connected in the first mounting block, and the connector is movably connected in the second mounting block. A QSFP connector is fixedly connected to one side of the connector, a limiting block is fixedly connected to the side, close to the connector, in the first mounting block, a silica gel pad is arranged in the first mounting block between the limiting block and the cap, and a pressing mechanism is rotationally connected to the interior of the shell; according to the device, the movement and swing of the connector, the wire core, the QSFP connector and the wire are effectively limited through the pressing mechanism, so that the stability of the active optical cable is improved, signal interference or connection faults possibly caused by looseness or swing are reduced, the possibility of faults is reduced, and the service life of equipment is prolonged.

The utility model relates to a kind of QSFP Bidi optical device for enterprise network, the transmission light wavelength range of TX end is different and not overlapped with the receiving light wavelength range of RX end;TX optical fiber between TX end and LC adapter is coupled with a narrowband filter, RX optical fiber between RX end and narrowband filter is coupled with a reflection prism, narrowband filter transmits the transmission light of TX end;Narrowband filter total reflection is received to the receiving light emitted from LC adapter, and let receiving light be coupled into the RX optical fiber of RX end by reflection prism reflection.A kind of enterprise network optical communication system, LC adapter in QSFP Bidi optical device is coupled with optical distribution unit by single-fiber bidirectional optical fiber, and optical distribution unit is coupled with multiple SFP optical devices respectively.Affirmative effect is that: cheap narrowband filter+reflection prism can be used to replace expensive optical circulator, effectively reduce cost, performance is promoted, it is easy to package into module, optical insertion loss is small.

Apparatus, systems, and methods are described for providing improved networked communication systems and related adapters. Example networked communication adapters include an adapter housing defining a first end and a second end opposite the first end. The first end is configured to engage an octal small form-factor pluggable (OSFP) connector, and the second end is configured to receive a quad small form-factor pluggable double density (QSFP-DD) transceiver therein. The networked communication adapter further includes an internal connector located within the adapter housing. In an operational configuration where the first end engages the OSFP connector and the second end receives the QSFP-DD transceiver, the internal connector is configured to operably connect the QSFP-DD transceiver to the OSFP connector such that signals can be transmitted therebetween.

An optical connector holding two or more LC-type optical ferrules is provided. The optical connector includes an outer body, an inner front body accommodating the two or more LC-type optical ferrules, ferrule springs for urging the optical ferrules towards a mating receptacle, and a back body for supporting the ferrule springs. The outer body and the inner front body are configured such that four LC-type optical ferrules are accommodated in a small form-factor pluggable (SFP) transceiver footprint or eight LC-type optical ferrules are accommodated in a quad small form-factor pluggable (QSFP) transceiver footprint. A mating receptacle (transceiver or adapter) includes a receptacle hook and a housing with an opening that accommodates the receptacle hook in a flexed position as the optical connector makes connection with the mating receptacle by introducing the receptacle hook into an optical receptacle hook recess.

The utility model discloses a QSFP + 40GPSM4 optical transceiver module meeting industrial grade temperature, which comprises a base, a circuit board, a coupling receiving amplifier and an upper cover, the top of the circuit board comprises a fixed seat, an FPC (Flexible Printed Circuit), an optical fiber connector, an interface, a laser transmitter, a receiving amplifier and a photoelectric detector, and the interface is arranged at the middle position of the circuit board; according to the utility model, after optical signals needing to be received pass through the optical fiber connector, light is received by the photoelectric detector and converted into electric signals, and then the signals are amplified by the amplifier, so that the problems of high-speed signal stability of the module and errors of received signals after the signals are converted into the optical signals in an outdoor severe high and low temperature environment are solved; practical functions of the industrial-grade temperature GPSM optical transceiver module are realized, power consumption is reduced, performance and stability are enhanced, a QSFP + module supporting high-speed industrial-grade temperature is realized, KM long-distance transmission is supported, power consumption is low, stability is high, and reliability is high.

The utility model discloses a kind of electromagnetic shielding box for optical module test, including shielding shell and test platform;The shielding shell is made of multiple metal material plate bodies and is sequentially enclosed and spliced, and electrically-conductive gasket is equipped at the joint between two adjacent plate bodies;Test port is provided on the shielding shell, and the outer end of the test port is connected with the optical module to be tested;The test platform is fixed in the shielding shell, and the test platform is connected with the inner end of the test port;The test port has two, and they are OSFP optical module test port and QSFP-DD optical module test port respectively.The utility model has the beneficial effects that: shielding shell is made of metal material, electrically-conductive gasket is equipped at the joint between shielding shell plate bodies, and they form integrated shielding, greatly improve electromagnetic shielding efficiency, reduce external electromagnetic interference, meet high-speed optical module test requirements.

Disclosed herein are optical amplifier devices, optical amplifier assembly, and optical amplifier systems. Example embodiments may include: a plurality of input optical ports, each being configured to receive one of a plurality of input optical signals; a plurality of output optical ports, each being configured to output one of a plurality of output optical signals; a plurality of tap photodiodes, each respectively being connected to one of the plurality of input optical ports and the plurality of output optical ports; a wavelength division multiplexer configured to receive the input optical signal from each of the plurality of input optical ports and an optical input from a laser pump device and output a plurality of pumped optical signals; a plurality of erbium-doped fiber coils, each having a first end configured to receive one of the plurality of pumped optical signals and a second end configured to output an amplified optical signal; and an optical isolator configured to receive, for each of the plurality of erbium-doped fiber coils, the amplified optical signal and output the plurality of output optical signals, wherein the plurality of output optical ports are configured to receive one of the plurality of output optical signals.

The invention relates to an optical receiving end, an RX optical fiber array is obliquely distributed, bare optical fibers, outside an optical port side, of all RX optical fibers in the RX optical fiber array are different in length, an array detector chip is horizontally arranged on the optical port side of the RX optical fiber array, and reflecting surfaces of all the bare optical fibers are aligned and coupled with a plurality of photosensitive surfaces of the array detector chip one by one. A QSFP 56 packaged 200G DR4 optical module is characterized in that a light emitting end and a light receiving end are fixed on a PCB side by side along the width direction of the PCB, a TX optical fiber array in the light emitting end is horizontally distributed, TX optical fibers of the TX optical fiber array in the light emitting end and RX optical fibers of an RX optical fiber array in the light receiving end respectively enter insertion cores which are arranged in the center relative to the PCB, the RX optical fiber array and the TX optical fiber array are distributed in a contracted manner, and the insertion cores are connected with the PCB. And the binding opening is close to the insertion core. The beneficial effects are that the bending included angle of the RX optical fiber at the root of the RX optical fiber array is reduced, and the RX optical fiber at the root of the RX optical fiber array is not easy to break.

The invention provides a device for assisting in testing an optical module and a high and low temperature hot and cold impact machine. The device comprises a gas circuit connecting piece and a base, the gas circuit connecting piece is provided with a gas inlet and a gas outlet; the air inlet is configured to be communicated with the cold / hot air output port; a test groove and an air outlet communicated with the test groove are formed in the end part of the bottom side of the air channel connecting piece, and the air outlet is communicated into the test groove; the base is arranged at the bottom of the gas circuit connecting piece; the upper surface of the base is configured to bear the optical module, and the test groove covers the optical module; the high and low temperature cold and hot impact machine comprises the device for assisting in testing the optical module and a heating head. The heating head is movably arranged and is provided with a cold / hot air outlet, and the cold / hot air outlet is detachably connected with the air inlet of the air path connecting piece; according to the application, the high and low temperature cold and hot impact test of the QSFP optical module product can be carried out, whether the tested QSFP optical module product has hidden dangers can be confirmed, and the reliability, the stability and the performance of the QSFP optical module product are ensured.

The present invention provides a multi-channel server device based on a single node. The interconnection board is respectively communicatively connected to the FIT signal interfaces of the QSFP boards in multiple nodes; the FIT signal interfaces of multiple CPUs inside the main board are respectively communicatively connected to the FIT signal interfaces of the QSFP boards. The first CPLD inside the main board is communicatively connected to the first CPLDs inside other nodes through the second CPLD in the CPLD board, and is used for synchronously starting the timers of all CPUs inside the main board; the second CTM signal interfaces of the last CPUs inside the main boards in multiple nodes are sequentially communicatively connected to the first CTM signal interfaces of the first CPUs inside the main boards in the next node, so as to realize multi-channel CPU interconnection communication, effectively solving the problem that in the prior art, servers with more than 8 channels cannot be realized due to the number of CPUs in the main board, and can be applicable to various application scenarios with relatively high performance requirements.

1. The name of the design product: hot plug optical module structure (QSFP-DD 400G SR4). 2. The use of the design product: suitable for QSFP-DD 400G SR4 optical module product, in line with QSFP-DD product packaging protocol. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to a QSFP-DD optical module rotary pull type unlocking structure, two side walls of a base are recessed inwards to form a connecting rod accommodating space, and the end parts of the two side walls of the base are continuously recessed inwards on the basis of the connecting rod accommodating space to form a pull ring accommodating space; the connecting rod is located in the connecting rod containing space and slidably connected with the base, one end of the connecting rod is provided with an unlocking protrusion, and the other end is provided with an oval groove. The pull ring is located in the pull ring containing space, a cylinder tangent to the oval groove is arranged on the outer side of the pull ring, and the inner side is rotationally connected with the base. In a locking state, the connecting arm is positioned on one side of the base in the height direction; the advantages are that the rotary pull ring design is adopted, and the pull ring, the connecting rod and other related unlocking structures are located in the edge of the module structure, so that the unlocking mechanism does not affect the plugging and unplugging of the optical fiber patch cord; the mounting structure of the spring enables the spring to be easily put in, so that the assembly efficiency is improved; the yield can be greatly improved, manpower is reduced, large-scale mass production is achieved, precision is high, and the requirements proposed by an application party are met.

A method of transmitting one or more radio data packets (40) by a first test device (11, 12, 13), the method comprising the steps of: obtaining, preferably repeatedly, by the first test device (11, 12, 13), a reference timestamp from a reference clock (RT), wherein the reference clock (RT) provides a reference time in a test system (1) comprising the first test device (11, 12, 13), wherein the reference timestamp indicates the reference time, transmitting, by the first test device (1), the one or more radio data packets, preferably sequentially, in accordance with a predetermined start time in the test system (1) on a communication interface (QSFP) for coupling the first test device (11, 12, 13) with a device under test, DUT (10).

A cable assembly comprising a connector with a termination that enables high density and high signal integrity. Shields of cables are terminated to a paddle card via a conductive structure attached to a surface of the paddle card. The signal conductors of the cables are terminated to pads on the paddle card that are exposed within openings of the conductive structure. Such a structure creates a ground structure per cable that provides low insertion loss and low crosstalk, even when multiple cables are aligned side by side and terminated in one or more rows. The cables may be drainless, enabling a large number of cables, such as eight cables, to be packed within the width of a paddle card specified in high density standards such as QSFP-DD or OSFP. The cables may nonetheless have large diameter signal conductors, enabling 2.5 or 3 meter assemblies with less than 17 dB insertion loss.

The invention relates to the technical field of QSFP (Quad Small Form-factor Pluggable) optical modules, in particular to a QSFP optical module device positioning device and a positioning method thereof.The QSFP optical module device positioning device comprises a first connecting module and a second connecting module, a plug connector is fixed to the end of the first connecting module, and a sleeving piece and a fixing plate are fixed to the second connecting module; the positioning and guiding assembly is arranged on the first connecting module, matched with the sleeving piece and used for guiding the sleeving piece to be arranged on the plug connector in a sleeving mode; the insertion guide assembly is arranged on the first connecting module, a follow-up rotating mechanism is arranged on the fixing plate, and the follow-up rotating mechanism comprises a movable rod; and the trigger locking mechanism is arranged on the fixing plate and connected with the follow-up rotating mechanism, the trigger locking mechanism can act when the follow-up rotating mechanism moves so as to execute reverse locking action on the movable rod, and through multi-directional locking of the movable rod, the accuracy and stability of connection are ensured.

The utility model provides a QSFP (Quad Small Form-factor Pluggable) optical module inspection tool, which comprises a positioning seat, an adjustable limiting block is fixedly arranged at the right end of the front surface of the positioning seat, and a fixed limiting block is fixedly arranged at the left end of the front surface of the positioning seat. According to the inspection tool for the QSFP optical module, the base, the adjustable limiting block, the fixed limiting block, the sliding groove channel and other structures are arranged, the adjustable limiting block can be flexibly adjusted according to the product size, the universality of the inspection tool is improved, the inspection tool is suitable for products of various specifications, the fixed limiting block is composed of the left block body and the right block body, and the formed sliding groove channel is convenient to maintain; the base placed at 45 degrees enables the product to automatically slide down for detection, thereby saving manpower, improving detection efficiency, unifying product slide down states, reducing man-made interference, and enabling detection results to be more reliable and accurate.

An optical connector holding two or more LC-type optical ferrules is provided. The optical connector includes an outer body, an inner front body accommodating the two or more LC-type optical ferrules, ferrule springs for urging the optical ferrules towards a mating receptacle, and a back body for supporting the ferrule springs. The outer body and the inner front body are configured such that four LC-type optical ferrules are accommodated in a small form-factor pluggable (SFP) transceiver footprint or eight LC-type optical ferrules are accommodated in a quad small form-factor pluggable (QSFP) transceiver footprint. A mating receptacle (transceiver or adapter) includes internal alignment slots configured to accept a corresponding alignment key on connector outer housing to ensure alignment and orientation for maximum signal transfer between opposing ferrule end faces.

The invention relates to the field of optical modules, in particular to an anti-loosening QSFP optical module, comprising a box body, a sealing cover, a pull handle, a plug, a tail plug and a circuit board, wherein the sealing cover is detachably arranged on the box body, the circuit board is arranged in the box body, the plug and the tail plug are respectively arranged at two ends of the circuit board, the pull handle is movably arranged on the box body, the QSFP optical module also comprises an anti-loosening component for increasing the connection tightness between the box body and a switch, the anti-loosening component is arranged on the box body and connected to the pull handle, and the anti-loosening component comprises a locking module, a driving module and a resistance unit; the device has a simple structure and is easy to operate, not only ensuring the anti-loosening function of the optical module, but also avoiding the phenomenon that the optical module is stuck in the switch and difficult to be pulled out due to the complex anti-loosening structure of the traditional optical module.