CN111751940A

CN111751940A - High-speed optical module

Info

Publication number: CN111751940A
Application number: CN202010595753.7A
Authority: CN
Inventors: 路绪刚
Original assignee: HEBEI HYMAX OPTOELECTRONIC Inc
Current assignee: HEBEI HYMAX OPTOELECTRONIC Inc
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-10-09

Abstract

The application discloses high-rate optical module includes: photoelectric part, the drain pan, upper cover and unlocking portion, photoelectric part holds and is fixed in the cavity that forms after drain pan and upper cover assembly, photoelectric part is equipped with the function circuit board, light emission part, light receiving part and optical fiber head, light emission part coupling encapsulates in the function circuit board and changes the signal of telecommunication of function circuit board into the light signal and launches through the optical fiber head, light receiving part coupling encapsulates in the function circuit board and changes the light signal that the optical fiber head received into the signal of telecommunication transmission in the function circuit board, unlocking portion can install in the accommodation space that forms after drain pan and upper cover assembly slidably, and can make the optical module unblock withdraw from host computer equipment when the pulling unlocking portion. According to the high-speed optical module, the photoelectric part, the bottom shell, the upper shell and the unlocking part are convenient to mount and dismount; the coupling packaging yield of the functional circuit board, the light emitting part and the light receiving part is high; the unlocking part can enable the optical module to be locked and unlocked smoothly in the host device.

Description

High-speed optical module

Technical Field

The application relates to the technical field of optical communication, in particular to a high-speed optical module.

Background

The steady development of the global telecommunication industry and the steady growth of broadband users lay a solid foundation for the development of the optical communication industry. With the continuous improvement of the global bandwidth demand and the expansion of the application fields of data centers and security monitoring optical communication industries, the optical fiber broadband access has become the mainstream communication mode. Under the promotion of popularization of terminals such as smart phones and the like and applications such as video and cloud computing, telecom operators continuously invest in building and upgrading mobile broadband networks and optical fiber broadband networks, and the investment scale of optical communication equipment is further enlarged.

The rapid development of the optical communication industry drives the updating of the optical module. Under the market competition environment where optical communication is increasingly intense at present, the demand of communication equipment for reducing the size of the equipment and increasing the interface density is also increasing. To meet this demand, optical modules are also being developed toward small packages with high integration and high speed. Such as XFP, QSFP (small Form-factor Pluggable optical module), QSFP +, CFP/CFP2/CFP4, QSFP28, etc., are all small-sized Pluggable high-density interface, high-speed optical modules, where QSFP28 is applicable to a 4 × 25GE access port, provides four high-band interconnection channels, and the highest transmission rate of each channel can achieve 40 Gbps. The QSFP28 optical module can be directly upgraded to 100G from 25G without passing through 406, so that the wiring system of the data center is greatly simplified, the cost and the cable density of the wiring system are reduced, and a more cost-effective solution is provided for enterprise upgrading and Ethernet connection. Therefore, a high-speed optical module is needed, wherein a light emitting part, a light receiving part, a functional circuit board, an optical fiber head and the like of the optical module are stably arranged in a cavity of the optical module, the optical module is combined with optical fiber communication equipment for use, an optical signal of the optical fiber communication equipment is converted into an electric signal through the light receiving part, the electric signal is transmitted to the functional circuit board, the electric signal received by the functional circuit board is communicated with a circuit board in a host device, otherwise, the electric signal of the circuit board in the host device is transmitted to the functional circuit board in the optical module, and the electric signal is converted into the optical signal through the light emitting; the optical module is stably locked in the host device by utilizing a metal cage in the host device, is smoothly unlocked and withdrawn from the host device through an unlocking component, and is coaxially aligned with an MPO (Multi-Fiber Push On) optical jumper connector through a coaxial device, so that optical signals are well transmitted.

Disclosure of Invention

An embodiment of the present invention is directed to provide a high-speed optical module, in which a light emitting unit, a light receiving unit, a functional circuit board, and an optical fiber head of the optical module are firmly fixed in a cavity of the optical module, the optical module is firmly locked in a host device by using a metal cage in the host device, the optical module is unlocked from the metal cage and then exits from the host device when an unlocking member is pulled, and the optical fiber head of the optical module is coaxially aligned with an MPO optical fiber jumper connector by a coaxial coupler, so that an optical signal is transmitted well.

In order to achieve the above object, an embodiment of the present invention provides a high-rate optical module, including: photoelectric part, the drain pan, upper cover and unlocking portion, photoelectric part holds and is fixed in the cavity that forms after drain pan and upper cover assembly, photoelectric part is equipped with the function circuit board, light emission part, light receiving part and optical fiber head, light emission part coupling encapsulates in the function circuit board and changes the signal of telecommunication of function circuit board into the light signal and launches through the optical fiber head, light receiving part coupling encapsulates in the function circuit board and changes the light signal that the optical fiber head received into the signal of telecommunication transmission in the function circuit board, unlocking portion can install in the accommodation space that forms after drain pan and upper cover assembly slidably, and can make the optical module unblock withdraw from host computer equipment when the pulling unlocking portion.

The photoelectric part is provided with a functional circuit board, a light emitting part, a light receiving part, a fiber head, a coaxial device, a heat sink, a protective cover and an adapter, the light emitting part is coupled and packaged on the functional circuit board and converts electric signals of the functional circuit board into optical signals to be emitted out through the fiber head, the light receiving part is also coupled and packaged on the functional circuit board and converts the optical signals received by the fiber head into electric signals to be transmitted to the functional circuit board, the fiber head is inserted and fixed in the adapter and coaxially aligned with an MPO fiber jumper connector inserted and locked in the adapter to transmit the optical signals, the coaxial device is provided with a base and a coaxial needle, the coaxial needle is clamped and fixed in the base and inserted through the fiber head and is inserted into a positioning hole of the MPO fiber jumper connector when the MPO fiber jumper connector is inserted into the adapter, the optical fiber head and the MPO optical fiber jumper connector are coaxially aligned well to perform optical signal transmission, the heat sink is pasted below the light emitting part, heat generated by the light emitting part during working is conducted to the heat sink and then conducted to the bottom shell and dissipated into the air, the protective cover is pasted and fixed at the positions of the light emitting part and the light receiving part to protect the light emitting part and the light receiving part, the adapter is provided with an optical fiber head port, an MPO optical fiber jumper port and a spring arm hook, the optical fiber head port is used for being plugged with the optical fiber head, the MPO optical fiber jumper port is used for being plugged with the MPO optical fiber jumper connector, and the spring arm hook is used for locking the MPO optical fiber jumper connector in the adapter;

the bottom shell is provided with a heat conduction platform inside the shell, a heat dissipation surface on the bottom surface outside the shell, a first accommodating space corresponding to the unlocking part on one side surface of the shell, wherein the heat conduction platform is in contact with the heat sink and conducts heat generated by the light emission part in work to the heat dissipation surface, and then the heat is dissipated to the air through a radiator tightly attached to the heat dissipation surface, the first accommodating space is provided with a locking surface, a sliding groove, a spring groove and an accommodating groove, the locking surface is used for being matched with a spring catch on a metal cage in a host device to lock the optical module in the metal cage, the sliding groove is used for providing a sliding path of the unlocking part, the spring groove is used for accommodating a reset spring to provide reset force of the unlocking part, an opening of the accommodating groove is arranged on the locking surface, the bottom shell is further provided with a blocking block and a part of mounting grooves, and the blocking block is used for clamping the coaxial device, the part mounting groove is used for mounting the adapter;

the side face of one end of the upper shell is provided with a second accommodating space corresponding to the first accommodating space, the accommodating space formed by matching the first accommodating space with the second accommodating space accommodates the unlocking part, the unlocking part slides in the accommodating space to unlock the optical module, the second accommodating space is provided with a stroke limiting groove for limiting the stroke of the unlocking part, one end of the upper shell is also provided with a partial mounting groove, and the partial mounting groove of the upper shell is matched with the partial mounting groove of the bottom shell to form a complete mounting groove for accommodating and fixing the adapter;

the unlocking part is provided with an unlocking rod and a handle, the unlocking rod is made of metal materials and is provided with a left sliding rod, a right sliding rod and a connecting cross beam, the left sliding rod and the right sliding rod are symmetrically arranged at two sides of the connecting cross beam, an unlocking wedge, a sliding block, a spring block, a stroke limiting block and a handle block are symmetrically arranged on the left sliding rod and the right sliding rod, the unlocking wedge is accommodated in the accommodating groove, the sliding block slides outwards during unlocking to jack up a spring sheet lock catch in a metal cage, the sliding block is accommodated in the sliding groove and slides in the sliding groove during unlocking to provide a sliding route for the unlocking part, the spring block is accommodated in the spring groove and abuts against one end of a reset spring, the stroke limiting block is accommodated in the stroke limiting groove and is matched with the stroke limiting groove to limit the sliding stroke of the unlocking part during unlocking, and the handle block is provided with a through hole, the handle is made of rubber materials and is provided with a handheld surface and two symmetrical pull arms, one end of each pull arm and the corresponding handle block are processed into a whole, so that the unlocking rod and the handle form an integral component to form the unlocking part, the handheld surface is arranged at the other end of each pull arm and provides external tension, and the unlocking part is pulled to unlock the optical module.

In the high-speed optical module, the first accommodating spaces are symmetrically arranged on two side surfaces of the bottom shell at one end, correspondingly, the second accommodating spaces are symmetrically arranged on two side surfaces of the upper shell at one end, and the first accommodating spaces and the second accommodating spaces are matched to form symmetrical accommodating spaces for accommodating the left slide bar and the right slide bar.

In the high-speed optical module, the main bodies of the left sliding rod and the right sliding rod are in a flat strip shape; the unlocking wedge body is arranged on the end face of one end of the main body and corresponds to the containing groove; the handle block is arranged at the other end of the main body and corresponds to the pull arm; the sliding block is arranged on the lower side of the main body and corresponds to the sliding groove; the stroke limiting block is arranged on the upper side of the main body and corresponds to the stroke limiting groove; the spring block is arranged on the inner side of the main body and corresponds to the spring groove.

According to the high-speed optical module, the photoelectric part, the bottom shell, the upper shell and the unlocking part are convenient to mount and dismount; the coupling packaging yield of the functional circuit board, the light emitting part and the light receiving part is high; the unlocking part can enable the optical module to be locked and unlocked smoothly in the host device.

Drawings

Fig. 1 is an exploded view of an embodiment of a high-speed optical module according to the present application;

fig. 2 is an exploded view of an embodiment of a high-speed optical module according to the present application;

FIG. 3 is a first assembly diagram of an embodiment of a high-speed optical module according to the present application;

FIG. 4 is a second assembled view of an embodiment of a high-speed optical module according to the present application;

FIG. 5 is a third assembly diagram (unlocked state) of an embodiment of a high-speed optical module according to the present application;

FIG. 6 is a fourth assembled view of an embodiment of a high-speed optical module of the present application (with an MPO fiber jumper connector latched);

fig. 7 is an exploded view of an optoelectronic element structure of a high-speed optical module according to the present application;

FIG. 8 is a schematic view of a coaxial connector and a fiber head assembly of a high-speed optical module according to the present application;

FIG. 9 is a schematic diagram of a coaxial cable of a high-speed optical module according to the present application;

FIG. 10 is a first schematic diagram of an adapter of a high-speed optical module according to the present application;

FIG. 11 is a second schematic diagram of an adapter of a high-speed optical module according to the present application;

FIG. 12 is a schematic view of a high-speed optical module according to the present application with the fiber stub connected to an MPO fiber jumper connector in a coaxial butt joint (with the adapter removed);

fig. 13 is a first schematic diagram of a bottom case of a high-speed optical module according to the present application;

fig. 14 is a second schematic diagram of a bottom case of a high-speed optical module according to the present application;

FIG. 15 is a first schematic diagram of an upper housing of a high-speed optical module according to the present application;

FIG. 16 is a schematic diagram of an unlocking portion of a high-speed optical module according to the present application;

FIG. 17 is a schematic view of an unlocking lever in an unlocking portion of a high-speed optical module according to the present application;

fig. 18 is a schematic diagram of a pull handle in an unlocking portion of a high-speed optical module according to the present application;

fig. 19 is a schematic diagram of a metal cage in a host device that is used in cooperation with an embodiment of a high-rate optical module according to the present application.

The reference numerals are explained below:

100 photoelectric part

110 light emitting part 130 light receiving part 140 fiber head 150 coaxial machine 151 seat 152 coaxial needle 160 heat sink 170 protection cover 180 adapter 181 fiber head port 182MPO fiber jumper port 183 spring arm hook 190 optical ribbon fiber

200 bottom shell

210 heat conducting table 220 first accommodation space 221 locking surface 222, slide 223 spring groove 224, groove 230, part of mounting groove 240 stopper 250 heat radiating surface

300 upper case

310 second accommodation space 311 limit slot 320 part mounting slot

400 unlocking part

The 410 unlocking rod 411, the left sliding rod 411-1 unlocking wedge 411-2 sliding block 411-3 spring block 411-4 stroke limiting block 411-5 handle block 412 is connected with the handheld surface of the beam 413, the right sliding rod 420 handle 421 and the pull arm 422

510 return spring 520 screw 530 dust plug

600MPO optical fiber jumper connector

700 metal cage 710 spring catch 720 heat sink 730 latch

Detailed Description

Specific embodiments of the present application will be described in detail below. It should be noted that the embodiments described herein are only for illustration and are not intended to limit the present application.

As shown in fig. 1 to 6, a cavity formed by connecting and assembling bottom case 200 and upper case 300 with screws 520 is used for accommodating fixed photoelectric portion 100, and an accommodating space formed at two sides of the assembly is used for accommodating unlocking portion 400.

Referring to fig. 7 to 12, the optoelectronic component 100 includes a functional circuit board 110, a light emitting component 120, a light receiving component 130, a fiber head 140, a coaxial connector 150, a heat sink 160, a protective cover 170, and an adapter 180, where the light emitting component 120 is coupled and packaged on the functional circuit board 110 to convert an electrical signal of the functional circuit board 110 into an optical signal, and transmits the optical signal to the MPO optical fiber jumper connector 600 through the fiber head 140, the light receiving component 130 is also coupled and packaged on the functional circuit board 110 to convert an optical signal received by the fiber head 140 from the MPO optical fiber jumper connector 600 into an electrical signal, and transmits the electrical signal to the functional circuit board 110, the fiber head 140 is inserted into the adapter 180 and coaxially aligned with the MPO optical fiber jumper connector 600 inserted into the adapter 180 to transmit the optical signal, the fiber head 140 is connected with the light emitting component 120 and the light receiving component 130 by using, the coaxial pin 152 is clamped in the holder 151 (as shown in fig. 9), inserted through the fiber head 140 (as shown in fig. 8), inserted into the positioning hole of the MPO fiber jumper connector 600 when the MPO fiber jumper connector 600 is inserted into the adapter 180, so that the fiber head 140 and the MPO fiber jumper connector 600 are aligned well coaxially for optical signal transmission (as shown in fig. 12 with the adapter removed), the heat sink 160 is adhered below the light emitting part 120, so that heat generated during the operation of the light emitting part 120 is conducted to the heat sink 160, and further conducted to the bottom case 200 and dissipated in the air, the protective cover 170 is adhered and fixed at the positions of the light emitting part 120 and the light receiving part 130, so as to protect the light emitting part 120 and the light receiving part 130, the adapter 180 is provided with a fiber head port 181, an MPO fiber jumper port 182 and an elastic arm hook 183, the fiber head port 181 is used for inserting the fiber head 140, the MPO, the latch arm hook 183 is used to secure the MPO fiber jumper connector 600 within the adapter 180.

Referring to fig. 13 and 14 in combination, the bottom chassis 200 is provided with a heat conducting platform 210 inside the housing, a heat dissipating surface 250 on the bottom surface outside the housing, a first accommodating space 220 corresponding to the unlocking portion 400 is provided on one side surface of the housing, the heat conducting platform 210 contacts with the heat sink 160 and conducts heat generated by the light emitting portion 120 during operation to the heat dissipating surface 250, and then dissipates the heat to the air through a heat sink 720 closely attached to the heat dissipating surface 250, the first accommodating space 220 has a locking surface 221, a sliding groove 222, a spring groove 223 and an accommodating groove 224, the locking surface 221 is used for cooperating with a spring catch 710 on a metal cage 700 in the host device to lock the optical module in the metal cage 700, the sliding groove 222 is used for providing a sliding path of the unlocking portion 400, the spring groove 223 is used for accommodating a return spring 510 to provide a return force of the unlocking portion 400, an opening of the accommodating groove 224 is provided on the locking surface 221, the bottom chassis 200 is further provided with a stopper 240 and a portion mounting groove, the stop 240 is used for clamping the coaxial connector 150, and part of the mounting groove 230 is used for mounting the adapter 180.

Referring to fig. 15, the upper case 300 is provided with a second receiving space 310 corresponding to the first receiving space 220 on one side surface, the receiving space formed by the first receiving space 220 and the second receiving space 310 in a matching manner receives the unlocking unit 400, the unlocking unit 400 performs optical module unlocking in the receiving space in a sliding manner, the second receiving space 310 is provided with a stroke limiting groove 311 for limiting the stroke of the unlocking unit 400, the upper case 300 is also provided with a partial mounting groove 320 on one end, and the partial mounting groove 320 of the upper case 300 is matched with the partial mounting groove 230 of the bottom case 200 to form a complete mounting groove for receiving the fixing adapter 180;

referring to fig. 16 to 18, the unlocking part 400 is provided with an unlocking rod 410 and a handle 420, the unlocking rod 410 is made of metal material, and is provided with a left sliding rod 411, a right sliding rod 413 and a connecting beam 412, the left sliding rod 411 and the right sliding rod 413 are symmetrically arranged at two sides of the connecting beam 412, an unlocking wedge 411-1, a sliding block 411-2, a spring block 411-3, a limit block 411-4 and a handle block 411-5 are symmetrically arranged on the left sliding rod 411 and the right sliding rod 413, the unlocking wedge 411-1 is accommodated in the accommodating slot 224, the outward sliding motion jacks up a spring sheet lock 710 in the metal cage 700 during unlocking, the sliding block 411-2 is accommodated in the sliding slot 222 during unlocking, a sliding path is provided for the unlocking part 400, the spring block 411-3 is accommodated in the spring slot 223 and abutted against one end of the return spring 510, the limit block 411-4 is accommodated in the limit slot 311, when unlocking, the sliding stroke of the unlocking part 400 is limited by matching with the stroke limiting groove 311, the handle block 411-5 is provided with a through hole and is integrally processed with the handle 420, the handle 420 is made of rubber materials and is provided with a handheld surface 422 and two symmetrical pull arms 421, one end of each pull arm 421 is integrally processed with the handle block 411-5, the unlocking part 410 and the handle 420 form an integral part to form the unlocking part 400, the handheld surface 422 is arranged at the other end of the pull arm 421 to provide external tension, and the unlocking part 400 is pulled to unlock the optical module and withdraw from the metal cage 700.

As shown in fig. 13 to 15, the first receiving spaces 220 formed on two sides of one end of the bottom case 200 are symmetrical, and correspondingly, the second receiving spaces 310 formed on two sides of one end of the upper case 300 are also symmetrical, and the first receiving spaces 220 and the second receiving spaces 310 cooperate to form symmetrical receiving spaces for receiving the left sliding rod 411 and the right sliding rod 413.

As shown in fig. 16 to 17, the main bodies of the left sliding rod 411 and the right sliding rod 413 are flat strips, and the unlocking wedge 411-1 is disposed on an end surface of one end of the main body and corresponds to the accommodating groove 224; the handle block 411-5 is arranged on the end surface of the other end of the main body and is processed into a whole with the pull arm 421; the sliding block 411-2 is arranged at the lower side of the main body and corresponds to the sliding groove 222; the spring block 411-3 is provided at the inner side of the body corresponding to the spring groove 223, and the stroke limiting block 411-4 is provided at the upper side of the body corresponding to the stroke limiting groove 311.

As shown in fig. 19, the heat sink 720 is fixed to the metal cage 700 by a latch 730 and tightly attached to the heat dissipation surface 250 of the bottom chassis 200, and heat generated by the optical module during operation is conducted to the heat sink 720 and dissipated to the air to protect the optical module from normal operation.

The following describes the operation, unlocking and recovery processes of an embodiment of the high-speed optical module according to the present invention with reference to fig. 3 and 19. The high-speed optical module is inserted into the metal cage 700 shown in fig. 19, and the locking surface 221 on the side surface of the bottom case 200 is locked by the elastic sheet lock 710 on the metal cage 700, so that the high-speed optical module is locked in the metal cage 700, at this time, the functional circuit board 110 is connected with the host device, and then the MPO optical fiber jumper connector 600 connected with the remote communication device is inserted and locked in the adapter 180 to coaxially butt the optical fiber head 140, so that the high-speed optical module starts to work.

When the high-speed optical module needs to be finished, the MPO optical fiber jumper connector 600 is pulled to be separated from the locking of the elastic arm hook 180 of the adapter 180, the MPO optical fiber jumper connector 600 is pulled out from the adapter 180, then a pulling force is applied on the hand-held surface 422 to pull the unlocking part 400, the unlocking part 400 compresses the return spring 510 to slide outwards, the unlocking wedge 411-1 is driven to slide outwards, the unlocking wedge 411-1 jacks up the spring sheet lock catch 710 locked on the locking surface 221 to be separated from the locking surface 221, further unlocking the optical module, meanwhile, the stroke limiting block 411-4 slides to one end of the stroke limiting groove 311 in the stroke limiting groove 311 and stops sliding, then, the unlocking part 400 stops sliding relative to the optical module, at this time, the unlocking part 400 is pulled outwards, the unlocking part 400 drives the whole optical module to exit from the metal cage 700, and thus, the actions of unlocking the optical module and exiting from the metal cage 700 are completed.

After the optical module is unlocked and pulled out of the metal cage 700, the external force applied to the handheld surface 422 disappears, the return spring 510 in the compressed state in the spring groove 223 starts to release the recovery elastic force due to the external force, the spring block 411-3 is pushed to slide backwards to return from the pushing unlocking part 400, and then the dust plug 530 is inserted into the MPO optical fiber jumper port 182 of the adapter 180 to protect the optical fiber head 140.

The foregoing is considered as illustrative and exemplary only and is not intended to be limiting, and it is to be understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A high-rate optical module, comprising: the photoelectric part is accommodated and fixed in a cavity formed after the bottom shell and the upper shell are assembled, the photoelectric part is provided with a functional circuit board, a light emitting part, a light receiving part and an optical fiber head, the light emitting part is coupled and packaged on the functional circuit board and converts an electric signal of the functional circuit board into an optical signal and emits the optical signal through the optical fiber head, the light receiving part is coupled and packaged on the functional circuit board and converts the optical signal received by the optical fiber head into an electric signal and transmits the electric signal to the functional circuit board, the unlocking part can be slidably installed in an accommodating space formed after the bottom shell and the upper shell are assembled, and the optical module can be unlocked and withdrawn from the host device when the unlocking part is pulled,

2. The high-speed optical module according to claim 1, wherein the bottom shell is symmetrically provided with the first receiving space at two sides of one end, and correspondingly, the top shell is also symmetrically provided with the second receiving space at two sides of one end, and the first receiving space and the second receiving space cooperate to form a symmetrical receiving space for receiving the left sliding rod and the right sliding rod.

3. The high-speed optical module as claimed in claim 1, wherein the bodies of said left and right sliding rods are flat strips; the unlocking wedge body is arranged on the end face of one end of the main body and corresponds to the containing groove; the handle block is arranged at the other end of the main body and corresponds to the pull arm; the sliding block is arranged on the lower side of the main body and corresponds to the sliding groove; the stroke limiting block is arranged on the upper side of the main body and corresponds to the stroke limiting groove; the spring block is arranged on the inner side of the main body and corresponds to the spring groove.