WO2023020075A1 - 一种新的光模块 - Google Patents

一种新的光模块 Download PDF

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Publication number
WO2023020075A1
WO2023020075A1 PCT/CN2022/097126 CN2022097126W WO2023020075A1 WO 2023020075 A1 WO2023020075 A1 WO 2023020075A1 CN 2022097126 W CN2022097126 W CN 2022097126W WO 2023020075 A1 WO2023020075 A1 WO 2023020075A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
optical
circuit board
installation part
bracket
Prior art date
Application number
PCT/CN2022/097126
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English (en)
French (fr)
Inventor
潘红超
Original Assignee
青岛海信宽带多媒体技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202121974509.8U external-priority patent/CN215895034U/zh
Priority claimed from CN202110962735.2A external-priority patent/CN113687480B/zh
Application filed by 青岛海信宽带多媒体技术有限公司 filed Critical 青岛海信宽带多媒体技术有限公司
Publication of WO2023020075A1 publication Critical patent/WO2023020075A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements

Definitions

  • the present application relates to the technical field of communication, and in particular to a new optical module.
  • Optical communication technology will be used in new business and application modes such as cloud computing, mobile Internet, and video.
  • the optical module realizes the function of photoelectric conversion in the field of optical communication technology, and is one of the key components in optical communication equipment.
  • the intensity of the optical signal input by the optical module to the external optical fiber directly affects the quality of optical fiber communication.
  • the communication rate of the optical module multiple optical devices are integrated inside the CFP2 coherent optical module, and optical signals are transmitted between different optical devices through optical fibers.
  • the length of the optical fiber is much longer than the distance between the optical devices.
  • the optical fiber needs to be fixed inside the optical module.
  • the application provides an optical module, including:
  • the lower shell is closed with the upper shell to form a wrapping cavity
  • the circuit board is arranged inside the package cavity
  • An optical fiber bracket is arranged inside the enclosing cavity and between the circuit board and the upper case;
  • the periphery of the fiber optic bracket protrudes toward the upper casing to form a fixed wall
  • the middle part of the fiber optic bracket protrudes toward the upper casing to form a fiber winding part
  • the relatively concave area between the fixed wall and the fiber winding part An optical fiber fixing groove is formed, and the optical fiber fixing groove is arranged around the fiber winding part, and the optical fiber is wound on the outer wall of the fiber winding part, thereby being fixed in the fiber fixing groove.
  • FIG. 1 is a schematic diagram of the connection relationship of an optical communication terminal
  • Fig. 2 is a schematic structural diagram of an optical network terminal
  • FIG. 3 is a schematic structural diagram of an optical module provided by some embodiments of the present disclosure.
  • FIG. 4 is a schematic diagram of an exploded structure of an optical module provided by some embodiments of the present disclosure.
  • FIG. 5 is a first structural schematic diagram of an optical fiber bracket provided by some embodiments of the present disclosure.
  • FIG. 6 is a second structural schematic diagram of an optical fiber bracket provided by some embodiments of the present disclosure.
  • Fig. 7 is a schematic diagram of connection between an optical fiber bracket and a sub-circuit board provided by some embodiments of the present disclosure
  • FIG. 8 is an exploded schematic diagram of an optical fiber bracket and a sub-circuit board provided by some embodiments of the present disclosure
  • FIG. 9 is a schematic diagram of connection between a fiber optic bracket, a sub-circuit board, and a circuit board provided by some embodiments of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a circuit board provided by some embodiments of the present disclosure.
  • Fig. 11 is a schematic structural diagram of a lower casing provided by some embodiments of the present disclosure.
  • Fig. 12 is a schematic structural view of the optical port in Fig. 11;
  • FIG. 13 is a schematic diagram of a partial structure of a circuit board in some embodiments of the present disclosure.
  • Fig. 14 is a schematic structural diagram of a circuit board, a lower housing and an optical fiber bracket provided by some embodiments of the present disclosure
  • Fig. 15 is a schematic structural diagram of an upper case provided by some embodiments of the present disclosure.
  • One of the core links of optical fiber communication is the mutual conversion of optical and electrical signals.
  • Optical fiber communication uses optical signals carrying information to be transmitted in information transmission equipment such as optical fibers/optical waveguides, and the passive transmission characteristics of light in optical fibers/optical waveguides can be used to achieve low-cost, low-loss information transmission; and information processing equipment such as computers Electric signals are used.
  • information transmission equipment such as optical fibers/optical waveguides
  • information processing equipment such as computers Electric signals are used.
  • the optical module realizes the above-mentioned mutual conversion function of optical and electrical signals in the field of optical fiber communication technology, and the mutual conversion of optical signals and electrical signals is the core function of the optical module.
  • the optical module realizes the electrical connection with the external host computer through the gold finger on its internal circuit board.
  • the main electrical connection includes power supply, I2C signal, data information, and grounding; the electrical connection method using the gold finger has become an optical module.
  • the mainstream connection method in the industry, based on this, the definition of the pins on the golden finger has formed a variety of industry protocols/standards.
  • FIG. 1 is a schematic diagram of a connection relationship of an optical communication terminal.
  • the connection of the optical communication terminal mainly includes the interconnection among the optical network terminal 100 , the optical module 200 , the optical fiber 101 and the network cable 103 .
  • One end of the optical fiber 101 is connected to the remote server, and one end of the network cable 103 is connected to the local information processing equipment.
  • the connection between the local information processing equipment and the remote server is completed by the connection between the optical fiber 101 and the network cable 103;
  • the optical network terminal 100 having the optical module 200 is completed.
  • the optical port of the optical module 200 is externally connected to the optical fiber 101, and a bidirectional optical signal connection is established with the optical fiber 101;
  • the electrical port of the optical module 200 is externally connected to the optical network terminal 100, and a bidirectional electrical signal connection is established with the optical network terminal 100;
  • the optical module 200 internally implements mutual conversion between optical signals and electrical signals, so as to establish an information connection between the optical fiber and the optical network terminal 100 .
  • the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network terminal 100
  • the electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module 200 and input to the optical fiber.
  • the optical network terminal 100 has an optical module interface 102 for connecting to the optical module 200 and establishing a bidirectional electrical signal connection with the optical module 200; the optical network terminal 100 has a network cable interface 104 for connecting to the network cable 103 and establishing a bidirectional The electrical signal connection; the connection between the optical module 200 and the network cable 103 is established through the optical network terminal 100 .
  • the optical network terminal 100 transmits the signal from the optical module 200 to the network cable, and transmits the signal from the network cable to the optical module 200.
  • the optical network terminal 100 monitors the work of the optical module 200 as the upper computer of the optical module.
  • the remote server establishes a two-way signal transmission channel with the local information processing device through the optical fiber, the optical module, the optical network terminal 100 and the network cable.
  • Common information processing equipment includes routers, switches, electronic computers, etc.; the optical network terminal is the upper computer of the optical module, which provides data signals to the optical module and receives data signals from the optical module.
  • the common optical module upper computer also has optical lines terminal etc.
  • FIG. 2 is a schematic structural diagram of the optical network terminal 100 .
  • a circuit board 105 in the optical network terminal 100, and a cage 106 is provided on the surface of the main circuit board 105; an electrical connector is provided inside the cage 106, which is used to connect to the electrical port of an optical module such as a golden finger ;
  • a radiator 107 is provided on the cage 106, and the radiator 107 has raised portions such as fins that increase the heat dissipation area.
  • the optical module 200 is inserted into the optical network terminal 100 , specifically, the electrical port of the optical module 200 is inserted into the electrical connector inside the cage 106 , and the optical port of the optical module is connected to the optical fiber 101 .
  • the cage 106 is located on the circuit board, and the electrical connector on the circuit board is wrapped in the cage, so that the inside of the cage is provided with an electrical connector; the optical module 200 is inserted into the cage 106, and the optical module 200 is fixed by the cage 106, and the optical module 200 generates The heat is conducted to the cage 106 and then diffused through the heat sink 107 on the cage 106 .
  • FIG. 3 is a schematic structural diagram of an optical module provided by some embodiments of the present disclosure
  • FIG. 4 is a schematic diagram of a disassembled structure of an optical module provided by some embodiments of the present disclosure.
  • the optical module 200 provided by some embodiments of the present disclosure includes an upper housing 201 , a lower housing 202 , an unlocking component 203 , a circuit board 300 and an optical transceiver assembly.
  • the upper shell 201 is closed on the lower shell 202 to form a wrapping cavity with two openings; the outer contour of the wrapping cavity generally presents a cuboid shape.
  • the lower case 202 includes a main board and two side plates located on both sides of the main board and perpendicular to the main board; Wrap the cavity; the upper case 201 can also include two side walls located on both sides of the cover plate and perpendicular to the cover plate, and the two side walls are combined with the two side plates to realize that the upper case 201 is covered by the lower case body 202.
  • the two openings can be openings at both ends (204, 205) in the same direction, or two openings facing different directions; one of the openings is the electrical port 204, and the golden finger of the circuit board protrudes from the electrical port 204 , inserted into an upper computer such as an optical network terminal; the other opening is an optical port 205, which is used for external optical fiber access to connect the optical transceiver components inside the optical module; the circuit board 300, optical transceiver components and other optoelectronic devices are located in the package cavity.
  • the combination of the upper case and the lower case is used to facilitate the installation of the circuit board 300, optical transceiver components and other components into the case, and the upper case and the lower case form the outermost packaging protection case of the module; the upper part
  • the housing and the lower housing are generally made of metal materials, which are used to realize electromagnetic shielding and heat dissipation.
  • the housing of the optical module is not made into an integral part. In this way, when assembling components such as circuit boards, the positioning parts, heat dissipation and electromagnetic shielding parts cannot be used. Installation is also not conducive to production automation.
  • the unlocking component 203 is used to realize the fixed connection between the optical module and the upper computer, or release the fixed connection between the optical module and the upper computer.
  • the unlocking part 203 has a snapping part that matches the cage of the host computer; pulling the end of the unlocking part can make the unlocking part move relatively along the surface of the outer wall; the optical module is inserted into the cage of the host computer, and the optical module is fixed by the snapping part of the unlocking part In the cage of the upper computer; by pulling the unlocking part, the engaging part of the unlocking part moves accordingly, and then changes the connection relationship between the engaging part and the upper computer, so as to release the engaging relationship between the optical module and the upper computer, so that the optical The module is pulled out from the host computer's cage.
  • the circuit board 300 is provided with circuit traces, electronic components (such as capacitors, resistors, triodes, MOS tubes) and chips (such as MCU, laser driver chips, limiting amplifier chips, clock data recovery CDR, power management chips, data processing chips DSP) and so on.
  • electronic components such as capacitors, resistors, triodes, MOS tubes
  • chips such as MCU, laser driver chips, limiting amplifier chips, clock data recovery CDR, power management chips, data processing chips DSP) and so on.
  • the circuit board 300 connects the electrical devices in the optical module together according to the circuit design through circuit traces, so as to realize electrical functions such as power supply, electrical signal transmission, and grounding.
  • the circuit board is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize the bearing function. For example, the rigid circuit board can carry the chip smoothly; when the optical transceiver component is located on the circuit board, the rigid circuit board can also provide Stable bearing; the rigid circuit board can also be inserted into the electrical connector in the upper computer cage, specifically, metal pins/golden fingers are formed on the surface of one end of the rigid circuit board to connect with the electrical connector in the upper computer cage connections; these are not easy to achieve with flexible circuit boards.
  • the gold finger end of the circuit board is located at the electrical port, which is connected with the host computer to realize communication.
  • the golden finger is connected to each functional chip on the circuit board through circuit traces.
  • Some optical modules also use flexible circuit boards as a supplement to rigid circuit boards; flexible circuit boards are generally used in conjunction with rigid circuit boards, for example, flexible circuit boards can be used to connect rigid circuit boards and optical transceiver components.
  • the optical transceiver assembly includes two parts, an optical transmitting device and an optical receiving device, which are collectively referred to as OSA in this disclosure, and are respectively used to realize the transmission of optical signals and the reception of optical signals.
  • the light emitting device generally includes a light emitter, a lens and a light detector, and the lens and the light detector are respectively located on different sides of the light emitter, and the front and back sides of the light emitter emit light beams respectively, and the lens is used to converge the front of the light emitter
  • the emitted light beam makes the light beam emitted by the light emitter converging to facilitate coupling to an external optical fiber; the light detector is used to receive the light beam emitted from the opposite side of the light emitter to detect the optical power of the light emitter.
  • the light emitted by the light emitter enters the optical fiber after being converged by the lens, and at the same time, the light detector detects the luminous power of the light emitter, so as to ensure the constancy of the emitted light power of the light emitter.
  • the CFP2 coherent optical module integrates multiple OSAs inside, and different OSAs are connected through optical fibers, and are connected to the outside through the optical fiber adapter at the optical port, that is, between different OSAs, and between each OSA and the optical fiber adapter There are a large number of optical fibers in between.
  • the optical module further includes: an optical fiber bracket 400 , which is arranged inside the enclosing cavity formed by the cover of the upper case and the lower case.
  • the upper surface of the fiber holder 400 is provided with a fiber fixing groove 410 for fixing the fiber.
  • the fiber optic bracket 400 is provided with a plurality of connecting pieces, and these connecting pieces pass through the fixing holes 411 to fix the fiber optic bracket 400 with the upper housing 201 .
  • one end of the fiber optic bracket 400 is symmetrically provided with two fixing holes 411 , which are connected to the upper housing 201 by screws or other connectors. Corresponding positions of the upper housing 201 are provided with corresponding first through holes 2018 .
  • FIG. 5 is a first structural schematic diagram of an optical fiber bracket provided by some embodiments of the present disclosure.
  • FIG. 6 is a second structural schematic diagram of an optical fiber tray provided by some embodiments of the present disclosure.
  • Figure 5 and Figure 6 show the fiber optic tray from different angles.
  • the upper surface of the fiber holder 400 is provided with a fiber fixing groove 410 for fixing the fiber.
  • the fiber optic bracket 400 is provided with a plurality of fixing holes 411, and is fixedly connected with the upper housing 201 through a connecting piece.
  • the optical fiber bracket 400 has a rectangular structure, and a first relief through hole 401 and a second relief through hole 402 are provided in the center for the relief of related OSAs.
  • the fiber fixing groove 410 is arranged along the edges of the first relief hole 401 and the second relief hole 402 , and the optical fiber is wound around the first relief hole 401 and the second relief hole 402 along the fiber fixing groove 410 .
  • One end of the fiber optic bracket 400 is provided with a first positioning hole 4111 and a second positioning hole 4112, which are located at one end of the electrical port.
  • the connecting piece passes through the first positioning hole 4111 , the second positioning hole 4112 and the first through hole 2018 provided at the corresponding position of the upper housing 201 , thereby connecting the fiber optic bracket 400 and the upper housing 201 .
  • the connecting piece can be a screw, which is convenient for installation and disassembly.
  • the fiber optic bracket 400 is also provided with a plurality of relief holes, corresponding to the positions of the relief holes on the circuit board, for the relief of the fixing bolts of the upper housing 201 and the lower housing 202 .
  • the fixing bolt passes through the through hole of the upper case 201, and reaches the screw hole of the lower case 202 through the relief hole of the optical fiber bracket 400 and the relief hole of the circuit board, so as to realize the connection between the upper case 201 and the lower case 202, and at the same time
  • the fiber optic bracket 400 and the circuit board 300 are positioned.
  • the relief holes of the fiber tray 400 include a first relief hole 4161 , a second relief hole 4162 , a third relief hole 4163 and a third relief hole 4164 .
  • the first relief hole 4161 and the second relief hole 4162 are arranged on the side close to the electrical port
  • the third relief hole 4163 and the third relief hole 4164 are arranged on the side close to the optical port.
  • the first relief hole 4161 and the second relief hole 4162 are symmetrically arranged on both sides of the fiber optic bracket
  • the third relief hole 4163 and the third relief hole 4164 are arranged on both sides of the fiber optic bracket.
  • FIG. 7 is a schematic diagram of connection between an optical fiber bracket and a sub-circuit board provided by some embodiments of the present disclosure
  • FIG. 8 is an exploded schematic diagram of an optical fiber bracket and a sub-circuit board provided by some embodiments of the present disclosure
  • Fig. 9 is a schematic diagram of connection of an optical fiber bracket, a sub-circuit board and a circuit board according to some embodiments of the present disclosure
  • Fig. 10 is a schematic structural diagram of a circuit board provided by some embodiments of the present disclosure. As shown in Fig. 7, Fig. 8, Fig. 9 and Fig.
  • a plurality of OSAs are arranged inside the optical module for mutual conversion between optical signals and electrical signals, including a first OSA310, a second OSA320, a third OSA
  • the OSA330 and the fourth OSA340 wherein: the first OSA310, the second OSA320, the third OSA330 and the fourth OSA340 are arranged on the same side of the circuit board to facilitate the connection of optical fibers between different OSAs.
  • the first OSA310 is arranged on the circuit board, close to the optical port, and the second OSA320 is also arranged on the circuit board, and is located on the same side of the circuit board as the first OSA310.
  • the third OSA 330 and the fourth OSA 340 are disposed on the fiber tray 400 .
  • a sub-circuit board 420 is further arranged on the fiber optic bracket 400 , and the third OSA 330 and the fourth OSA 340 are electrically connected to the sub-circuit board 420 .
  • a first fiber optic adapter 500 and a second fiber optic adapter 600 are provided on the side of the circuit board 300 close to the optical port, respectively for transmitting optical signals from the external optical fiber to the internal optical fiber and for transmitting optical signals from the internal optical fiber to the external optical fiber.
  • first relief hole 401 and the second relief hole 402 in the fiber tray 400 can be connected as one relief hole, or the first relief hole 401 and the second relief hole Connecting parts are provided between the holes 402 to facilitate installation and positioning.
  • the optical fiber fixing groove 410 may be a circular structure, or an elliptical structure or a structure similar to an elliptical shape.
  • the optical fiber fixing groove 410 includes a first installation part 412 , a second installation part 413 , a third installation part 414 and a fourth installation part 415 which are connected in sequence. Adjacent mounting parts are connected by rounded corners.
  • the first installation part 412 and the third installation part 414 are located on the shorter side, and the second installation part 413 and the fourth installation part 415 are located on the longer side.
  • the sub-circuit board 420 is disposed in the groove of the fourth installation part 415 .
  • the third OSA 330 and the fourth OSA 340 are disposed on the sub-circuit board 420 and are electrically connected to the sub-circuit board 420 through pins.
  • the sub-circuit board 420 is electrically connected to the circuit board 300 .
  • a first connector is provided at one end of the sub-circuit board 420, and a second connector 350 is provided on the upper surface of the circuit board 300.
  • the first connector of the sub-circuit board 420 and the second connector 350 of the circuit board 300 are connected by a flexible board connection.
  • the flexible circuit board passes through the fiber optic bracket 400, one end is connected to the first connector, and the other end is connected to the second connector 350 to realize the electrical connection between the sub-circuit board 420 and the circuit board 300, that is, to realize the third OSA330 and the third OSA330.
  • Four OSA 340 are electrically connected to the circuit board 300 .
  • the bottom of the fourth mounting part 415 is provided with an opening 4151, which is a rectangular opening and is located on the lower side of the sub-circuit board 420.
  • the flexible circuit board passes through the opening 4151 through the fiber optic bracket 400 to realize the connection between the sub-circuit board 420 and the circuit board 300.
  • the electrical connection of the third OSA330 and the fourth OSA340 and the sub-circuit board 420 and the circuit board 300 are realized.
  • the optical fiber bracket 400 is provided with a plurality of relief through holes for the displacement of larger devices on the circuit board 300, including : the first relief through hole 401, located near the middle of the fiber optic bracket 400, for the relief of the second OSA320, the second relief through hole 402, located on one side of the first relief through hole 401, for Make way for the MCU.
  • the second OSA 320 passes through the first relief hole 401
  • the MCU passes through the second relief hole 402 , thereby being exposed in the sealed cavity between the upper housing 201 and the fiber optic bracket 400 .
  • the optical fiber bracket 400 is provided with an optical fiber fixing groove 410 for carrying optical fibers.
  • the periphery of the fiber optic bracket 400 protrudes to form a fixed wall, and the middle part of the fiber bracket 400 protrudes toward the upper casing to form a fiber winding part, and the relatively concave area between the fixed wall and the fiber winding part forms a fiber fixing groove 410, the optical fiber is wound in the optical fiber fixing groove located between the fiber winding part and the fixing wall.
  • the fiber winding part is formed by the upward protrusion of the fiber bracket at the corresponding area, and the central area of the fiber winding part is opened to form a first relief through hole 401 and a second relief through hole 402 .
  • the fiber fixing groove 410 is disposed around the first relief hole 401 and the second relief hole 402 for positioning the optical fiber.
  • the four corners of the optical fiber fixing groove 410 are rounded, so that the optical fiber transitions slowly at the corners, avoids hard bending, and effectively protects the optical fiber.
  • a first communication groove 417 is provided at the connection between the first installation part 412 and the second installation part 413 of the optical fiber fixing groove 410.
  • One end of the first communication groove 417 is an opening and is set toward the first OSA310; The other end of a communication slot 417 communicates with the first mounting portion 412 .
  • Part of the optical fiber of the first OSA310 is positioned by connecting the first communication groove 417 into the fiber fixing groove 410 to realize the connection with the fourth OSA340 or the third OSA330.
  • the opening of the first communication groove 417 is located on the same straight line as the optical fiber exit of the first OSA310, which helps to shorten the length of the optical fiber and reduce material loss; at the same time, it reduces the bending of the optical fiber and improves the stability of optical communication. sex.
  • One end of the fourth OSA340 is provided with a fourth optical fiber connector
  • one end of the third OSA330 is provided with a third optical fiber connector
  • both the third optical fiber connector and the fourth optical fiber connector are arranged facing the first OSA310 to facilitate optical fiber connection.
  • connection between the first installation part 412 and the fourth installation part 415 is provided with a second communication groove 418, one end of the second communication groove 418 is an opening, and is set toward the first OSA310; the other end of the second communication groove 418 is connected to the first installation part 412 connected.
  • Part of the optical fiber of the fourth OSA340 or the third OSA330 is led out of the optical fiber fixing groove 410 through the second communication groove 418 to realize the connection with the first OSA310 or external optical fiber.
  • the end of the second communication groove 418 is provided with a guide part, and the guide part is rounded and chamfered to facilitate the insertion and extraction of the optical fiber.
  • the guide part protrudes toward the optical port relative to the first installation part 412 to facilitate the installation of the optical fiber.
  • the first installation part 412 includes a first sub-installation part 4121 and a second sub-installation part 4122, and a spacer is provided between the first sub-installation part and the second sub-installation part to facilitate the first communication.
  • the separation and fixation of the optical fiber in the groove 417 and the second communication groove 418 prevents different optical fiber lines from mixing together, which affects the optical signal transmission efficiency.
  • multiple optical devices such as optical splitters, can also be arranged on the fiber bracket and connected to the OSA through optical fibers.
  • the sub-circuit board 420 when installing, the sub-circuit board 420 is first installed on the upper surface of the fiber optic bracket 400, one end of the flexible circuit board is connected to the sub-circuit board 420, and the other end passes through the fiber optic bracket 400, exposing on the lower surface of the fiber tray 400.
  • the third OSA 330 and the fourth OSA 340 are disposed on the sub-circuit board 420 , and are fixed on the upper surface of the fiber optic bracket 400 through the sub-circuit board 420 .
  • the optical fiber connected to the third OSA330 and the fourth OSA340 is installed in the fiber fixing groove 410, one end is connected to the third OSA330 or the fourth OSA340, and the other end is drawn out through the first communication groove 417 or the second communication groove 418, but not connected to the circuit
  • the first OSA310 and the second OSA320 are connected on the board. Then connect the fiber optic bracket 400 to the circuit board 300 and install it on the lower casing 202 .
  • An electrical connector 360 is provided at one end of the circuit board 300 to realize electrical connection with the outside.
  • the projection of the fiber optic bracket 400 on the circuit board covers the electrical connector 360 .
  • the surface of the electrical connector protrudes from the surface of the circuit board 300 .
  • the third mounting portion 414 is provided with a first stepped surface 4141 for the protrusion of the electrical connector 360 to give way.
  • the first stepped surface 4141 protrudes upward toward the housing.
  • FIG. 11 is a schematic structural diagram of a lower casing provided by some embodiments of the present disclosure
  • FIG. 12 is a schematic structural diagram of the optical port in FIG. 11
  • the lower case 202 includes a main board 2021 , a first side board 2022 and a second side board 2023 , and the first side board 2022 and the second side board 2023 are symmetrically arranged on both sides of the main board 2021 .
  • one end of the lower housing 202 is provided with an optical port 206 for accessing external optical fibers.
  • the optical port portion 206 is provided with a first fixing groove 2061 for fixing the first optical fiber adapter 500 .
  • the shape of the first fixing groove 2061 matches the shape of the first optical fiber adapter 500 .
  • the first optical fiber adapter 500 has a cylindrical structure, the first fixing groove 2061 is semicircular, and the first fixing groove 2061 covers part of the first optical fiber adapter 500 for carrying the first optical fiber adapter 500 .
  • the optical port portion 206 is further provided with a second fixing groove 2062 for fixing the second optical fiber adapter 600 .
  • the shape of the second fixing slot 2062 matches the shape of the second fiber optic adapter 600 .
  • the second optical fiber adapter 600 has a cylindrical structure, the second fixing groove 2062 is semicircular, and the second fixing groove 2062 covers part of the second optical fiber adapter 600 for carrying the second optical fiber adapter 600 .
  • first fixing groove 2061 and the second fixing groove 2062 which form the first connecting portion 2063 .
  • Both sides of the first connecting portion 2063 are respectively a first fixing groove 2061 and a second fixing groove 2062 , where the first optical fiber adapter 500 and the second optical fiber adapter 600 are respectively placed.
  • FIG. 13 is a schematic diagram of a partial structure of a circuit board in some embodiments of the present disclosure.
  • Fig. 14 is a partial structural diagram of a circuit board, a lower housing and an optical fiber bracket provided by some embodiments of the present disclosure.
  • the first optical fiber adapter 500 is provided with a first fastening portion 501 , and the first fastening portion 501 protrudes from the outer wall of the first optical fiber adapter 500 .
  • the first fixing groove 2061 is correspondingly recessed, so that the first fastening portion 501 is inserted into the first fixing groove 2061 , so as to realize the fixing of the first optical fiber adapter 500 and the lower housing 202 .
  • the second optical fiber adapter 600 is provided with a second fastening portion 601, the second fastening portion 601 protrudes from the outer wall of the second optical fiber adapter 600, and the second fixing groove 2062 is correspondingly recessed, so that the second fastening portion 601 is inserted into the first In the second fixing slot 2062 , the fixing of the second optical fiber adapter 600 and the lower casing 202 is realized.
  • the first fastening portion 501 and the second fastening portion 601 are arranged in circular shapes.
  • first fixing slot 2061 and the second fixing slot 2062 are a first connecting portion 2063 , which matches the connecting groove provided in the upper casing 201 .
  • the fiber optic bracket 400 is connected to the upper casing 201 , and the fiber optic bracket 400 is fixedly connected to the upper casing 201 by a connector. Then, the optical fiber connector led out from the optical fiber bracket 400 is connected to the corresponding OSA, and then the circuit board is connected to the optical fiber bracket 400 . Finally, the lower case 202 is connected with the upper case 201 .
  • FIG. 15 is a schematic structural view of an upper housing provided by some embodiments of the present disclosure.
  • the edge of the fiber fixing groove 410 in the fiber optic bracket 400 is relative to the inner upward housing.
  • the body 201 protrudes in the direction, and a fixing portion is provided on the end of the upper housing close to the electrical port for setting a connection through hole.
  • the connecting piece is connected with the upper casing 201 through the connecting through hole.
  • the specific fixing part includes: a first fixing part and a second fixing part, which are respectively arranged at the corners of the upper housing 201, and the first fixing part and the second fixing part are arranged symmetrically, which is convenient for installation.
  • the upper housing 201 in order to improve the utilization rate of the space between the fiber optic bracket 400 and the upper housing 201 and improve the miniaturization of the optical module, includes: a cover plate 2011 and a
  • the side walls 2012 on both sides and the inner wall of the cover plate are provided with a first escape portion 2013 , which is provided near the electrical port and is recessed relative to the inner wall of the cover plate for avoidance of the optical fiber bracket 400 .
  • the first avoiding portion 2013 can accommodate the outer wall of the fiber fixing groove 410 , and the fiber fixing groove 410 is embedded in the first avoiding portion 2013 to reduce the distance between the fiber bracket 400 and the upper housing 201 .
  • a heat conduction member 20131 is provided in the first escape portion 2013, and the heat conduction member 20131 protrudes toward the lower casing 202 relative to the first avoidance portion 2013, and the heat conduction member 20131 is embedded in the first escape through hole,
  • the second relief through hole is used for heat dissipation of devices in the first relief through hole and the second relief through hole.
  • the inner wall of the upper housing 201 is provided with a bracket mounting part, and a threaded hole is provided inside for connecting the connecting parts.
  • the inner wall of the cover plate of the upper housing 201 is provided with a first bracket installation part, which is provided at a corner of the end close to the electric port.
  • the first bracket installation part protrudes toward the housing downward compared with the first escape part 2013, and is fixedly connected with the first fixing part.
  • a second bracket installation part is also provided, which is arranged on the opposite side of the first bracket installation part, and is fixedly connected with the second fixing part.
  • the optical fiber bracket 400 after the fiber optic bracket 400 is connected to the upper housing 201, the optical fiber is led out from the first communication groove 417 and the second communication groove 418, and then connected to the circuit board;
  • the flexible circuit board is electrically connected with the connector 350 on the circuit board.
  • the second OSA 320 and the MCU on the circuit board are exposed to the space between the fiber optic bracket 400 and the upper housing 201 through the relief hole.
  • the optical fiber bracket 400 can be provided with recesses/openings at positions corresponding to other optoelectronic devices on the circuit board for avoidance of the optoelectronic devices.
  • cover plate is also provided with a second escape portion 2014, which is recessed relative to the plane of the inner wall of the cover plate, and is used for the relief installation of the first OSA310, which is beneficial to reduce the gap between the circuit board and the cover plate, increase the component density, and improve The degree of miniaturization.
  • an optical fiber fixing part is also provided on the cover plate for positioning and fixing the optical fiber adapter.
  • the fiber fixing part is arranged at one end close to the optical port, including a support platform 2015 and a card seat 2016.
  • the support platform 2015 protrudes toward the lower housing 202 for supporting the fiber optic adapter and reducing the distance between the fiber optic adapter and the upper housing 201 , to facilitate the optical connection between the optical fiber adapter and the outside after the upper casing 201 and the lower casing are covered.
  • the card holder 2016 is arranged perpendicular to the support platform, and includes a first connection protrusion 20161 and a second connection protrusion 20162, which are respectively engaged with the first optical fiber adapter 500 and the second optical fiber adapter 600 .
  • a connection groove is provided between the first connection protrusion 20161 and the second connection protrusion 20162 .
  • the first connecting protrusion 20161 forms a first supporting portion for supporting the first optical fiber adapter 500 .
  • the second connection protrusion 20162 forms a second support portion for supporting the second fiber optic adapter 600 .
  • the lower shell is provided with a first bolt positioning post 2031, a second bolt positioning post 2032, a third bolt positioning post 2033 and a second bolt positioning post 2033.
  • Four bolt positioning posts 2034 wherein the first bolt positioning post 2031, the second bolt positioning post 2032, the third bolt positioning post 2033 and the fourth bolt positioning post 2034 all protrude toward the inside of the package cavity relative to the side plate to reduce space occupation .
  • the first bolt positioning post 2031 and the second bolt positioning post 2032 are symmetrically arranged on the side close to the electric port, and the third bolt positioning post 2033 and the fourth bolt positioning post 2034 are arranged in the middle of the lower housing.
  • the height of the third bolt positioning post 2033 and the fourth bolt positioning post 2034 is greater than the height of the first bolt positioning post 2031 and the second bolt positioning post 2032 .
  • the upper shell is provided with the first bolt positioning hole 20171, the second bolt positioning hole 20172, the third bolt positioning hole 20173 and the fourth bolt positioning hole 20174.
  • the first bolt positioning hole 20171 and the second bolt positioning hole 20172 are disposed on the edge of the first avoiding portion 2013 and protrude toward the housing downward.
  • the third bolt positioning hole 20173 and the fourth bolt positioning hole 20174 are disposed on the cover plate of the upper casing.
  • the first relief hole 4161 and the second relief hole 4162 in the fiber optic tray 400 are semicircular relief holes, which are only used for the relief of the positioning bolts.
  • the fourth relief hole 4164 is a semi-circular columnar hole structure, and it is used for positioning the optical fiber bracket and a side plate of the lower housing against the outside of the fourth positioning bolt during installation.
  • the third relief hole 4163 has a fan-shaped structure, and it abuts against the outside of the third positioning bolt during installation, and is used for positioning the optical fiber bracket and the other side plate of the lower housing.
  • symmetrical positioning protrusions are provided near the electric port side of the first escape portion 2013, and the first bolt positioning holes 20171 and the second bolt positioning holes 20172 are disposed on the positioning protrusions.
  • the first positioning piece is arranged on the first relief hole 4161, and the first positioning piece is vertically arranged with the side wall of the first relief hole. Between a bolt positioning column and the first bolt positioning hole 20171.
  • the first positioning piece separates the first relief hole 4161 into a first relief step surface and a second relief step surface, and the first relief step surface faces the side of the upper housing, which is used for relief of the first bolt positioning hole 20171 Bit limited.
  • the first relief stepped surface is disposed on the outer wall of the positioning protrusion where the first bolt positioning hole 20171 is located.
  • the opposite side of the first relief step surface is provided with a second relief step surface, and the second relief step surface faces the side of the lower housing, and is used for the relief limitation of the first bolt positioning post 2031 .
  • the second relief hole 4162 is arranged symmetrically with the first relief hole 4161 , which will not be repeated here.
  • the first support portion and the second support portion formed by the first connection protrusion 20161 and the second connection protrusion 20162 may include a groove design, that is, respectively form the first groove and the second Grooved to match the shape of the fiber optic adapter.
  • the first support part and the second support part can also be a flat plate structure as shown in the figure, and only realize the support of the fiber optic adapter, and the first connection protrusion 20161 and the second connection protrusion 20162 are used to realize the positioning of the fiber optic adapter.
  • the outer shape of the fiber optic adapter can be square or cylindrical.
  • the first fiber optic adapter 500 is a cylindrical structure.
  • the first groove of the first support part adopts an arc shape, which matches the shape of the first optical fiber adapter 500, and the first optical fiber adapter 500 is inserted into the first groove to realize the positioning of the first optical fiber adapter .
  • the second fiber optic adapter 600 is a cylindrical structure.
  • the second groove of the second supporting part adopts an arc shape to match the shape of the second fiber optic adapter 600 , and the second fiber optic adapter 600 is inserted into the second groove to realize the positioning of the second fiber optic adapter.
  • the optical module of the present disclosure includes: an upper casing and a lower casing are covered to form a wrapping cavity.
  • the circuit board is arranged inside the package cavity to realize the conversion between optical signals and electrical signals; the first OSA and the second OSA are arranged on the circuit board.
  • the optical fiber bracket is arranged between the circuit board and the upper case, and is fixedly connected with the upper case to form an optical fiber fixing cavity.
  • the optical fiber bracket is provided with: an optical fiber fixing groove, which is recessed toward the lower housing relative to the plane of the optical fiber bracket, for fixing the optical fiber.
  • the sub-circuit board is arranged in the optical fiber fixing groove and has a flexible circuit board at one end; the flexible circuit board passes through the bottom of the optical fiber fixing groove and is electrically connected to the circuit board.
  • the third OSA and the fourth OSA are arranged on the sub-circuit board, and the third OSA and the fourth OSA are placed between the optical fiber bracket and the upper housing to realize the third OSA, the fourth OSA and the first OSA,
  • the physical separation of the second OSA facilitates the winding and fixing of the optical fiber during the assembly process.
  • the connection between the sub-circuit board and the optical fiber bracket is firstly completed, so as to realize the installation and positioning of some optical fibers in the optical fiber fixing groove. Then complete the fixation of the optical fiber on the circuit board and the connection and fixation between the optical fiber bracket and the circuit board to prevent the optical fibers from being entangled with each other, resulting in signal loss. Simplify the installation process of fiber optic winding, easy to install.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

本申请公开了一种光模块，包括：上壳体；下壳体，与所述上壳体盖合形成包裹腔体；电路板，设置于所述包裹腔体内部；光纤托架，设置于所述包裹腔体内部、并位于所述电路板与所述上壳体之间；其中，所述光纤托架的四周朝上壳体方向凸起形成固定壁，光纤托架的中部朝上壳体方向凸起形成绕纤部，固定壁和绕纤部之间的相对凹陷的区域形成光纤固定槽，所述光纤固定槽围绕所述绕纤部设置，光纤缠绕在绕纤部的外壁上、由此固定于光纤固定槽内。本申请通过设置光纤托架，方便了装配过程中光纤的缠绕固定，使得光模块内部的光纤实现物理分离，避免光纤相互缠绕，造成信号缺失。

Description

一种新的光模块
本申请要求2021年8月20日提交的名称为“一种光模块”的中国专利申请No.202121974509.8、以及2021年8月20日提交的名称为“一种光模块”的中国专利申请No.202110962735.2的优先权，其全部内容通过参引的方式结合入本文中。
技术领域
本申请涉及通信技术领域，尤其涉及一种新的光模块。
背景技术
在云计算、移动互联网、视频等新型业务和应用模式，均会用到光通信技术。光模块在光通信技术领域中实现光电转换的功能，是光通信设备中的关键器件之一，光模块向外部光纤中输入的光信号强度直接影响光纤通信的质量。
随着光模块通信速率的提升，CFP2相干光模块内部集成多个光器件，不同的光器件之间通过光纤实现光信号的传递。为了方便光纤的安装，光纤的长度远大于光器件之间的距离，为了提高光信号的稳定性，需要在光模块的内部进行光纤的固定。
发明内容
本申请提供了一种光模块，包括：
上壳体；
下壳体，与所述上壳体盖合形成包裹腔体；
电路板，设置于所述包裹腔体内部；
光纤托架，设置于所述包裹腔体内部、并位于所述电路板与所述上壳体之间；
其中，所述光纤托架的四周朝上壳体方向凸起形成固定壁，光纤托架的中部朝上壳体方向凸起形成绕纤部，固定壁和绕纤部之间的相对凹陷的区域形成光纤固定槽，所述光纤固定槽围绕所述绕纤部设置，光纤缠绕在绕纤部的外壁上、由此固定于光纤固定槽内。
附图说明
图1为光通信终端连接关系示意图；
图2为光网络终端结构示意图；
图3为本公开一些实施例提供的一种光模块的结构示意图；
图4为本公开一些实施例提供光模块的分解结构示意图；
图5为本公开一些实施例提供的一种光纤托架的结构示意图一；
图6为本公开一些实施例提供的一种光纤托架的结构示意图二；
图7为本公开一些实施例提供的一种光纤托架与子电路板的连接示意图；
图8为本公开一些实施例提供的一种光纤托架与子电路板的分解示意图；
图9为本公开一些实施例提供的一种光纤托架、子电路板与电路板的连接示意图；
图10为本公开一些实施例提供的一种电路板的结构示意图；
图11为本公开一些实施例提供的一种下壳体的结构示意图；
图12为图11中的光口部的结构示意图；
图13为本公开一些实施例中电路板的局部结构示意图；
图14为本公开一些实施例提供的一种电路板、下壳体与光纤托架的结构示意图；
图15为本公开一些实施例提供的一种上壳体的结构示意图。
具体实施方式
为便于对本公开进行解释，以下首先在对本公开所涉及到的一些概念进行说明。
在本说明书中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或暗示这些实体或操作之间存在任何这种实际的关系或顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的电路结构、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种电路结构、物品或者设备所固有的要素。在没有更多限制的情况下，有语句“包括一个……”限定的要素，并不排除在包括所述要素的电路结构、物品或者设备中还存在另外的相同要素。
为了使本技术领域的人员更好地理解本公开，下面将结合本公开实施例中的附图，对本公开一些实施例进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本公开保护的范围。
光纤通信的核心环节之一是光、电信号的相互转换。光纤通信使用携带信息的光信号在光纤/光波导等信息传输设备中传输，利用光在光纤/光波导中的无源传输特性可以实现低成本、低损耗的信息传输；而计算机等信息处理设备使用的是电信号，为了在光纤/光波导等信息传输设备与计算机等信息处理设备之间建立信息连接，就需要实现电信号与光信号的相互转换。
光模块在光纤通信技术领域中实现上述光、电信号的相互转换功能，光信号与电信号的相互转换是光模块的核心功能。光模块通过其内部电路板上的金手指实现与外部上位机之间的电连接，主要的电连接包括供电、I2C信号、数据信息以及接地等；采用金手指实现的电连接方式已经成为光模块行业的主流连接方式，以此为基础，金手指上引脚的定义形成了多种行业协议/规范。
图1为光通信终端连接关系示意图。如图1所示，光通信终端的连接主要包括光网络终端100、光模块200、光纤101及网线103之间的相互连接。
光纤101的一端连接远端服务器，网线103的一端连接本地信息处理设备，本地信息处理设备与远端服务器的连接由光纤101与网线103的连接完成；而光纤101与网线103之间的连接由具有光模块200的光网络终端100完成。
光模块200的光口对外接入光纤101，与光纤101建立双向的光信号连接；光模块200的电口对外接入光网络终端100中，与光网络终端100建立双向的电信号连接；在光模块200内部实现光信号与电信号的相互转换，从而实现在光纤与光网络终端100之间建立信息连接。具体地，来自光纤的光信号由光模块转换为电信号后输入至光网络终端100中，来自光网络终端100的电信号由光模块200转换为光信号输入至光纤中。
光网络终端100具有光模块接口102，用于接入光模块200，与光模块200建立双向的电信号连接；光网络终端100具有网线接口104，用于接入网线103，与网线103建立双向的电信号连接；光模块200与网线103之间通过光网络终端100建立连接。具体地，光网络终端100将来自光模块200的信号传递给网线，将来自网线的信号传递给光模块200，光网络终端 100作为光模块的上位机监控光模块200的工作。
至此，远端服务器通过光纤、光模块、光网络终端100及网线，与本地信息处理设备之间建立双向的信号传递通道。
常见的信息处理设备包括路由器、交换机、电子计算机等；光网络终端是光模块的上位机，向光模块提供数据信号，并接收来自光模块的数据信号，常见的光模块上位机还有光线路终端等。
图2为光网络终端100的结构示意图。如图2所示，在光网络终端100中具有电路板105，在主电路板105的表面设置笼子106；在笼子106内部设置有电连接器，用于接入金手指等光模块的电口；在笼子106上设置有散热器107，散热器107具有增大散热面积的翅片等凸起部。
光模块200插入光网络终端100中，具体为光模块200的电口插入笼子106内部的电连接器，光模块的光口与光纤101连接。
笼子106位于电路板上，将电路板上的电连接器包裹在笼子中，从而使笼子内部设置有电连接器；光模块200插入笼子106中，由笼子106固定光模块200，光模块200产生的热量传导给笼子106，然后通过笼子106上的散热器107进行扩散。
图3为本公开一些实施例提供的一种光模块结构示意图，图4为本公开一些实施例提供光模块分解结构示意图。如图3、图4所示，本公开一些实施例提供的光模块200包括上壳体201、下壳体202、解锁部件203、电路板300及光收发组件。
上壳体201盖合在下壳体202上，以形成具有两个开口的包裹腔体；包裹腔体的外轮廓一般呈现长方体形。具体地，下壳体202包括主板以及位于主板两侧、与主板垂直设置的两个侧板；上壳体201包括盖板，盖板盖合在下壳体202的两个侧板上，以形成包裹腔体；上壳体201还可以包括位于盖板两侧、与盖板垂直设置的两个侧壁，由两个侧壁与两个侧板结合，以实现上壳体201盖合在下壳体202上。
两个开口具体可以是在同一方向上的两端开口(204、205)，也可以是朝不同方向的两处开口；其中一个开口为电口204，电路板的金手指从电口204伸出，插入光网络终端等上位机中；另一个开口为光口205，用于外部光纤接入以连接光模块内部的光收发组件；电路板300、光收发组件等光电器件位于包裹腔体中。采用上壳体、下壳体结合的装配方式，便于将电路板300、光收发组件等器件安装到壳体中，由上壳体、下壳体形成模块最外层的封装保护壳体；上壳体及下壳体一般采用金属材料，利用实现电磁屏蔽以及散热，一般不会将光模块的壳体做成一体部件，这样在装配电路板等器件时，定位部件、散热以及电磁屏蔽部件无法安装，也不利于生产自动化。
解锁部件203用于实现光模块与上位机之间的固定连接，或解除光模块与上位机之间的固定连接。
解锁部件203具有与上位机笼子匹配的卡合部件；拉动解锁部件的末端可以使解锁部件沿外壁的表面相对移动；光模块插入上位机的笼子里，由解锁部件的卡合部件将光模块固定在上位机的笼子里；通过拉动解锁部件，解锁部件的卡合部件随之移动，进而改变卡合部件与上位机的连接关系，以解除光模块与上位机的卡合关系，从而可以将光模块从上位机的笼子里抽出。
电路板300上设置有电路走线、电子元件(如电容、电阻、三极管、MOS管)及芯片(如MCU、激光驱动芯片、限幅放大芯片、时钟数据恢复CDR、电源管理芯片、数据处理芯片DSP)等。
电路板300通过电路走线将光模块中的用电器件按照电路设计连接在一起，以实现供电、电信号传输及接地等电功能。
电路板一般为硬性电路板，硬性电路板由于其相对坚硬的材质，还可以实现承载作用，如硬性电路板可以平稳的承载芯片；当光收发组件位于电路板上时，硬性电路板也可以提供平稳的承载；硬性电路板还可以插入上位机笼子中的电连接器中，具体地，在硬性电路板一侧末端表面形成金属引脚/金手指，用于与上位机笼子中的电连接器连接；这些都是柔性电路板不便于实现的。
电路板的金手指端位于电口，其与上位机连接，实现通信。金手指通过电路走线与电路板上各功能芯片连接。
部分光模块中也会使用柔性电路板，作为硬性电路板的补充；柔性电路板一般与硬性电路板配合使用，如硬性电路板与光收发组件之间可以采用柔性电路板连接。
光收发组件包括光发射器件及光接收器件两部分，在本公开中统称为OSA，分别用于实现光信号的发射与光信号的接收。光发射器件一般包括光发射器、透镜与光探测器，且透镜与光探测器分别位于光发射器的不同侧，光发射器的正反两侧分别发射光束，透镜用于会聚光发射器正面发射的光束，使得光发射器射出的光束为会聚光，以方便耦合至外部光纤；光探测器用于接收光发射器反面发射的光束，以检测光发射器的光功率。具体地，光发射器发出的光经透镜会聚后进入光纤中，同时光探测器检测光发射器的发光功率，以保证光发射器发射光功率的恒定性。
本公开实施例提供的CFP2相干光模块内部集成多个OSA，不同的OSA之间通过光纤连接，且经光口处的光纤适配器与外部连接，即不同的OSA之间、以及各OSA与光纤适配器之间存在大量的光纤。为方便光纤在光模块内部的固定，光模块还包括：光纤托架400，设置于上壳体与下壳体盖合形成的包裹腔体内部。光纤托架400的上表面设置光纤固定槽410，用于固定光纤。光纤托架400设置多个连接件，这些连接件穿过固定孔411，将光纤托架400与上壳体201固定连接。
如图4中所，光纤托架400的一端对称设置有两个固定孔411，与上壳体201通过螺钉等连接件连接。上壳体201相应位置设置有与之对应的第一通孔2018。
图5为本公开一些实施例提供的一种光纤托架的结构示意图一。图6为本公开一些实施例提供的一种光纤托架的结构示意图二。图5和图6从不同的角度对光纤托架进行展示。
光纤托架400的上表面设置光纤固定槽410，用于固定光纤。光纤托架400设置多个固定孔411，通过连接件与上壳体201固定连接。
在本公开的一些实施例中，光纤托架400为长方形结构，中心部位设置第一让位通孔401和第二让位通孔402，用于相关OSA的让位。光纤固定槽410沿第一让位通孔401和第二让位通孔402的边缘设置，光纤沿光纤固定槽410围绕第一让位通孔401和第二让位通孔402进行缠绕。
光纤托架400的一端设置第一定位孔4111和第二定位孔4112，位于电口一端。连接件穿过第一定位孔4111和第二定位孔4112以及上壳体201相应位置设置的第一通孔2018，由此连接光纤托架400与上壳体201。连接件可以是螺钉，方便安装、拆卸。
光纤托架400还设置有多个让位孔，与电路板上的让位孔位置对应，用于上壳体201与下壳体202的固定螺栓的让位。固定螺栓通过上壳体201的通孔，经光纤托架400的让位孔、电路板的让位孔到达下壳体202的螺孔，实现上壳体201与下壳体202的连接，同时对光纤托架400和电路板300进行定位。
在本公开一些实施例中，光纤托架400的让位孔包括第一让位孔4161、第二让位孔4162、第三让位孔4163和第三让位孔4164。其中，第一让位孔4161和第二让位孔4162设置于靠近电口的一侧，第三让位孔4163和第三让位孔4164设置于靠近光口的一侧。第一让位孔4161与第二让位孔4162对称设置于光纤托架的两侧，第三让位孔4163和第三让位孔4164设置于光纤托架的两侧。
图7为本公开一些实施例提供的一种光纤托架与子电路板的连接示意图，图8为本公开一些实施例提供的一种光纤托架与子电路板的分解示意图。图9为本公开一些实施例提供的一种光纤托架、子电路板与电路板的连接示意图。图10为本公开一些实施例提供的一种电路板的结构示意图。如图7、图8、图9和图10所示，光模块内部设置多个OSA，以用于实现光信号与电信号之间的相互转换，包括，第一OSA310、第二OSA320、第三OSA330和第四OSA340，其中：第一OSA310、第二OSA320、第三OSA330和第四OSA340设置于电路板的同侧，方便不同OSA之间光纤的连接。第一OSA310设置于电路板上、靠近光口位置，第二OSA320也设置于电路板上，与第一OSA310位于电路板的同一侧。第三OSA330和第四OSA340设置于光纤托架400上。光纤托架400上还设置子电路板420，第三OSA330和第四OSA340与子电路板420电连接。
电路板300靠近光口的一侧设置第一光纤适配器500和第二光纤适配器600，分别用于将光信号由外部光纤传送至内部光纤、以及用于将光信号由内部光纤传送至外部光纤。
可选的，光纤托架400中的第一让位通孔401和第二让位通孔402可连通为一个让位通孔，也可在第一让位通孔401和第二让位通孔402之间设置连接部，方便安装定位。
光纤固定槽410可以是圆形结构，也可以是椭圆形结构或类似椭圆形的结构。在本公开中，光纤固定槽410包括依次连通的第一安装部412、第二安装部413、第三安装部414和第四安装部415。相邻的安装部之间通过圆角连接。第一安装部412与第三安装部414位于较短的一侧，第二安装部413与第四安装部415位于较长的一侧。且子电路板420设置在第四安装部415的凹槽内。第三OSA330和第四OSA340设置于子电路板420上，通过引脚与子电路板420电连接。
结合图8所示，子电路板420与电路板300电连接。具体的，子电路板420的一端设置第一连接器，电路板300上表面设置第二连接器350，子电路板420的第一连接器与电路板300的第二连接器350之间通过柔性电路板连接。柔性电路板穿过光纤托架400，一端与第一连接器连接，另一端与第二连接器350连接，实现子电路板420与电路板300之间的电连接，即实现第三OSA330和第四OSA340与电路板300的电连接。
第四安装部415底部设有一开口4151，为长方形开口设置，位于子电路板420的下侧，柔性电路板通过该开口4151穿过光纤托架400，实现子电路板420与电路板300之间的电连接，即实现第三OSA330和第四OSA340与子电路板420及电路板300的电连接。
为节约光纤托架400与电路板300之间的空间，实现光模块小型化，光纤托架400设置多个让位通孔，用于电路板300上体积较大的器件的让位，其中包括：第一让位通孔401，位于光纤托架400的靠近中间位置，用于第二OSA320的让位，第二让位通孔402，位于第一让位通孔401的一侧，用于MCU的让位。安装后，第二OSA320通过第一让位通孔401、MCU通过第二让位通孔402，由此暴露于上壳体201与光纤托架400之间的密封腔体内。
为方便光纤在光纤托架400上的安装，光纤托架400设置有光纤固定槽410，用于承载光纤。光纤托架400的四周凸起，形成固定壁，光纤托架400的中部朝上壳体方向凸起，形成绕纤部，固定壁和绕纤部之间的的相对凹陷的区域形成光纤固定槽410，光纤缠绕在位于 绕纤部与固定壁之间的光纤固定槽内。绕纤部通过光纤托架在对应区域处的向上凸起形成，绕纤部的中央区域开孔，形成第一让位通孔401、第二让位通孔402。光纤固定槽410围绕第一让位通孔401和第二让位通孔402设置，用于光纤的定位。为避免光纤在光纤固定槽410中的缠绕造成的损伤，光纤固定槽410的四角采用圆角，使得光纤在拐角位置缓慢过渡，避免出现硬性折弯，有效保护光纤。
为方便光纤的引出，在光纤固定槽410的第一安装部412与第二安装部413的连接处设置第一连通槽417，第一连通槽417的一端为开口，朝向第一OSA310设置；第一连通槽417的另一端与第一安装部412连通。第一OSA310的部分光纤通过连第一连通槽417进入光纤固定槽410进行定位，实现与第四OSA340或第三OSA330的连接。
在本公开的一些实施例中，第一连通槽417的开口与第一OSA310的光纤出口位于同一直线上，这有助于缩短光纤长度，减少原料损耗；同时减少光纤弯折，提高光通信稳定性。
第四OSA340的一端设置第四光纤接头，第三OSA330的一端设置第三光纤接头，第三光纤接头和第四光纤接头均朝向第一OSA310设置，方便光纤连接。
第一安装部412与第四安装部415的连接处设置第二连通槽418，第二连通槽418的一端为开口，朝向第一OSA310设置；第二连通槽418的另一端与第一安装部412连通。第四OSA340或第三OSA330的部分光纤通过连第二连通槽418引出光纤固定槽410，实现与第一OSA310或外部光纤的连接。
为方便光纤在第二连通槽418的进出，避免光纤出现弯折，第二连通槽418的端部设置导向部，导向部为圆滑倒角设置，方便光纤的接入与引出。导向部相对第一安装部412向光口位置伸出，便于光纤的安装。
在本公开的一些实施例中，第一安装部412包括第一子安装部4121和第二子安装部4122，第一子安装部和第二子安装部之间设置间隔板，方便第一连通槽417与第二连通槽418内光纤的分离固定，避免不同的光纤线路糅杂在一起，影响光信号传递效率。
在本公开的一些实施例中，光纤托架上还可设置多个光器件，通过光纤与OSA连接，如光分解器。
在本公开的一些实施例中，安装时，首先将子电路板420安装于光纤托架400的上表面，柔性电路板的一端与子电路板420连接，另一端穿过光纤托架400，暴露于光纤托架400的下表面。子电路板420上设置有第三OSA330和第四OSA340，通过子电路板420固定于光纤托架400的上表面。与第三OSA330和第四OSA340连接的光纤安装于光纤固定槽410内，一端与第三OSA330或第四OSA340连接，另一端通过第一连通槽417或第二连通槽418引出，但不与电路板上第一OSA310和第二OSA320连接。然后将光纤托架400与电路板300连接，安装于下壳体202上。
电路板300的一端设置电连接器360，与外部实现电连接。为保护电连接器360，光纤托架400在电路板上的投影覆盖电连接器360。电连接器的表面凸出于电路板300表面，为实现对电连接器的保护，第三安装部414设置第一台阶面4141，用于电连接器360的凸起部分的让位。第一台阶面4141向上壳体方向凸起。
在本公开一些实施例中，光纤适配器能够可靠地固定在光模块内，提高稳定性。图11为本公开一些实施例提供的一种下壳体的结构示意图，图12为图11中的光口部的结构示意图。结合图12和图11所示，下壳体202包括主板2021、第一侧板2022和第二侧板2023，第一侧板2022与第二侧板2023对称设置于主板2021的两侧。为方便第一光纤适配器500、第二光纤适配器600与下壳体202的固定，下壳体202的一端设置光口部206，用于外部光纤的 接入。进一步，光口部206设置第一固定槽2061，用于固定第一光纤适配器500。如图中所示，第一固定槽2061的形状与第一光纤适配器500的外形相匹配。在本公开中，第一光纤适配器500为圆柱形结构，第一固定槽2061呈半圆形，第一固定槽2061包覆部分的第一光纤适配器500，用于承载第一光纤适配器500。
同样的，光口部206还设置第二固定槽2062，用于固定第二光纤适配器600。如图中所示，第二固定槽2062的形状与第二光纤适配器600的外形相匹配。在本公开中，第二光纤适配器600为圆柱形结构，第二固定槽2062呈半圆形，第二固定槽2062包覆部分的第二光纤适配器600，用于承载第二光纤适配器600。
第一固定槽2061与第二固定槽2062之间存在一定的间隔，其形成第一连接部2063。第一连接部2063的两边分别为第一固定槽2061和第二固定槽2062，分别放置第一光纤适配器500和第二光纤适配器600。
图13为本公开一些实施例中电路板的局部结构示意图。图14为本公开一些实施例提供的一种电路板、下壳体与光纤托架的部分结构示意图。如图13和图14所示，第一光纤适配器500设有第一卡固部501，第一卡固部501凸出于第一光纤适配器500的外壁。第一固定槽2061相应地凹入，使得第一卡固部501嵌入第一固定槽2061内，实现第一光纤适配器500与下壳体202的固定。
第二光纤适配器600设有第二卡固部601，第二卡固部601凸出于第二光纤适配器600的外壁，第二固定槽2062相应地凹入，使得第二卡固部601嵌入第二固定槽2062内，实现第二光纤适配器600与下壳体202的固定。
在本公开一些实施例中，为方便第一光纤适配器500与第二光纤适配器600的安装固定，第一卡固部501、第二卡固部601为圆环形设置。
第一固定槽2061与第二固定槽2062之间为第一连接部2063，与设置在上壳体201中的连接凹槽相匹配。将光纤托架400与上壳体201连接，利用连接件将光纤托架400与上壳体201固定连接。而后，光纤托架400引出的光纤接头与相应的OSA连接，再将电路板与光纤托架400连接。最后将下壳体202与上壳体201连接。
图15为本公开一些实施例提供的一种上壳体的结构示意图，如图15所示，在本公开的一些实施例中，光纤托架400中光纤固定槽410的边缘相对于内部向上壳体201方向凸起，上壳体靠近电口的一端设置固定部，用于设置连接通孔。连接件穿过连接通孔与上壳体201连接。具体的固定部包括：第一固定部和第二固定部，分别设置于上壳体201的角部，且第一固定部与第二固定部对称设置，方便安装。
在本公开的一些实施例中，为提高光纤托架400与上壳体201之间的空间的利用率，提高光模块小型化程度，上壳体201包括：盖板2011和垂直设置于盖板两侧的侧壁2012，盖板的内壁设置第一避让部2013，第一避让部2013靠近电口设置，相对于盖板的内壁凹陷，用于光纤托架400的避让。具体的，第一避让部2013可容纳光纤固定槽410的外壁，光纤固定槽410嵌入第一避让部2013内，减少光纤托架400与上壳体201之间的距离。
在本公开的一些实施例中，第一避让部2013内设置导热件20131，导热件20131相对第一避让部2013向下壳体202方向凸起，且导热件20131嵌入第一让位通孔、第二让位通孔内，用于第一让位通孔、第二让位通孔内器件的散热。
在本公开的一些实施例中，上壳体201内壁设置有托架安装部，内设螺纹孔，用于连接件的连接。具体的，上壳体201盖板内壁设置第一托架安装部，设置于靠近电口的端部一角。第一托架安装部相较于第一避让部2013向下壳体方向凸起，与第一固定部固定连接。还设置 第二托架安装部，设置于第一托架安装部的对侧，与第二固定部固定连接。
在本公开提供的一些实施例中光纤托架400与上壳体201连接后，光纤从第一连通槽417、第二连通槽418引出，再与电路板连接；而与子电路板420连接的柔性电路板与电路板上的连接器350电连接。电路板上的第二OSA320、MCU通过让位孔暴露出于光纤托架400与上壳体201之间的空间。为进一步减少电路板与光纤托架400之间的空间，光纤托架400可在电路板上其他光电器件对应的位置处设置凹陷/开口，用于光电器件的避让。
进一步，盖板上还设置有第二避让部2014，相对盖板内壁平面凹陷，用于第一OSA310的让位安装，有利于减少电路板与盖板之间的间隙，提高部件密集度，提高小型化程度。
在本公开提供的一些实施例中，为方便电路板在上壳体201与下壳体2020之间的连接固定，盖板上还设置有光纤固定部，用于光纤适配器的定位与固定。光纤固定部设置于靠近光口的一端，包括支撑台2015和卡座2016，支撑台2015向下壳体202方向凸起，用于支撑光纤适配器，减少光纤适配器与上壳体201之间的距离，方便上壳体201与下壳体盖合后光纤适配器与外部的光连接。
卡座2016垂直于支撑台设置，包括第一连接凸起20161和第二连接凸起20162，分别与第一光纤适配器500和第二光纤适配器600卡接。第一连接凸起20161与第二连接凸起20162之间设置连接凹槽。第一连接凸起20161形成第一支撑部，用于支撑第一光纤适配器500。第二连接凸起20162形成第二支撑部，用于支撑第二光纤适配器600。
结合图5、图11和图15所示，为实现上壳体与下壳体的连接，下壳体设置第一螺栓定位柱2031、第二螺栓定位柱2032、第三螺栓定位柱2033和第四螺栓定位柱2034，其中第一螺栓定位柱2031、第二螺栓定位柱2032、第三螺栓定位柱2033和第四螺栓定位柱2034均相对侧板向包裹腔体内部凸起，以减少空间占用。第一螺栓定位柱2031、第二螺栓定位柱2032对称设置于靠近电口一侧，第三螺栓定位柱2033和第四螺栓定位柱2034设置于下壳体的中部。且，第三螺栓定位柱2033和第四螺栓定位柱2034的高度大于第一螺栓定位柱2031和第二螺栓定位柱2032的高度。为实现与下壳体的连接，上壳体相应设置第一螺栓定位孔20171、第二螺栓定位孔20172、第三螺栓定位孔20173和第四螺栓定位孔20174，与下壳体各定位柱位置一一对应。第一螺栓定位孔20171、第二螺栓定位孔20172设置于第一避让部2013的边缘，且向下壳体方向凸起。第三螺栓定位孔20173和第四螺栓定位孔20174设置于上壳体的盖板上。为方便光纤托架的连接，实现光模块小型化，光纤托架400中第一让位孔4161、第二让位孔4162为半圆形让位孔，仅用于定位螺栓的让位。第四让位孔4164为半圆形柱状孔结构，安装时抵于第四定位螺栓的外部，用于光纤托架与下壳体一个侧板的定位。第三让位孔4163为扇形结构，安装时抵于第三定位螺栓的外部，用于光纤托架与下壳体另一侧板的定位。在本公开一些实施例中，第一避让部2013的电口侧附近设置对称设置的定位凸起，第一螺栓定位孔20171和第二螺栓定位孔20172设置于定位凸起上。第一让位孔4161上设置第一定位片，第一定位片与第一让位孔侧壁垂直设置，第一定位片设置第一螺纹孔，第一定位片半圆形结构，设置于第一螺栓定位柱与第一螺栓定位孔20171之间。第一定位片将第一让位孔4161分离为第一让位台阶面和第二让位台阶面，第一让位台阶面朝向上壳体一侧，用于第一螺栓定位孔20171的让位限定。第一让位台阶面设置于第一螺栓定位孔20171所在的定位凸起的外壁。第一让位台阶面的相对侧设置第二让位台阶面，第二让位台阶面朝向下壳体一侧，用于第一螺栓定位柱2031的让位限定。第二让位孔4162与第一让位孔4161对称设置，在此不再一一赘述。
在本公开的一些实施例中，由第一连接凸起20161和第二连接凸起20162形成的第一支 撑部和第二支撑部可以包括凹槽设计，即分别形成第一凹槽和第二凹槽，与光纤适配器的外形相匹配。第一支撑部和第二支撑部也可如图所示为平板结构，仅实现光纤适配器的支撑，第一连接凸起20161与第二连接凸起20162用于实现光纤适配器的定位。
通常，光纤适配器的外部形状可以为方形，也可以为圆柱形。在本公开一些实施例中第一光纤适配器500为圆柱形结构。在本公开中，第一支撑部的第一凹槽采用圆弧形，与第一光纤适配器500的外形相匹配，第一光纤适配器500嵌入第一凹槽内，实现第一光纤适配的定位。第二光纤适配器600为圆柱形结构。在本公开中，第二支撑部的第二凹槽采用圆弧形，与第二光纤适配器600的外形相匹配，第二光纤适配器600嵌入第二凹槽内，实现第二光纤适配器的定位。
本公开的光模块包括：上壳体与下壳体盖合形成包裹腔体。电路板，设置于所述包裹腔体内部，实现光信号与电信号之间的转换；所述电路板上设置第一OSA和第二OSA。光纤托架，设置于所述电路板与所述上壳体之间，且与所述上壳体固定连接，形成光纤固定腔体。其中，所述光纤托架设有：光纤固定槽，相对于所述光纤托架的平面向下壳体方向凹陷，用于固定光纤。子电路板，设置于所述光纤固定槽内，一端设有柔性电路板；所述柔性电路板穿过所述光纤固定槽的槽底，与所述电路板电连接。第三OSA和第四OSA，设置于所述子电路板上，将第三OSA和第四OSA放置于光纤托架与上壳体之间，实现第三OSA、第四OSA与第一OSA、第二OSA的物理分离，方便装配过程中将光纤的缠绕固定。且安装过程中首先完成子电路板与光纤托架的连接，实现光纤固定槽内部分光纤的安装定位。然后完成电路板上光纤的固定及光纤托架与电路板之间的连接固定，避免光纤相互缠绕，造成信号缺失。简化光纤缠绕安装过程，便于安装。
由于以上实施方式均是在其他方式之上引用结合进行说明，不同实施例之间均具有相同的部分，本说明书中各个实施例之间相同、相似的部分互相参见即可。在此不再详细阐述。
需要说明的是，在本说明书中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或暗示这些实体或操作之间存在任何这种实际的关系或顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的电路结构、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种电路结构、物品或者设备所固有的要素。在没有更多限制的情况下，有语句“包括一个……”限定的要素，并不排除在包括所述要素的电路结构、物品或者设备中还存在另外的相同要素。
本领域技术人员在考虑说明书及实践本申请的公开后，将容易想到本申请的其他实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本申请的真正范围和精神由权利要求的内容指出。
以上所述的本申请实施方式并不构成对本申请保护范围的限定。

Claims (20)

  1. 一种光模块，包括：
    上壳体；
    下壳体，与所述上壳体盖合形成包裹腔体；
    电路板，设置于所述包裹腔体内部；
    光纤托架，设置于所述包裹腔体内部、并位于所述电路板与所述上壳体之间；
    其中，所述光纤托架的四周朝上壳体方向凸起形成固定壁，光纤托架的中部朝上壳体方向凸起形成绕纤部，固定壁和绕纤部之间的相对凹陷的区域形成光纤固定槽，所述光纤固定槽围绕所述绕纤部设置，光纤缠绕在绕纤部的外壁上、由此固定于光纤固定槽内。
  2. 根据权利要求1所述的光模块，其中，所述光纤固定槽包括：依次连通的第一安装部、第二安装部、第三安装部和第四安装部，
    其中，第一安装部包括第一子安装部和第二子安装部，所述第一安装部和所述第二子安装部之间设置间隔板，用于光纤的分离固定；
    所述第一安装部与所述第二安装部的连接处设有第一连通槽，所述第一连通槽的一端为开口，通往光纤固定槽的外部，另一端与所述第一子安装部、所述第二子安装部、所述第二安装部连通，使得光纤穿过所述第一连通槽进入所述光纤固定槽。
  3. 根据权利要求2所述的光模块，，所述第一安装部和所述第二子安装部为同心圆弧。
  4. 根据权利要求1所述的光模块，其中，
    所述光纤固定槽包括依次连通的第一安装部、第二安装部、第三安装部和第四安装部，
    其中，所述第一安装部与所述第四安装部的连接处设有第二连通槽，所述第二连通槽的一端为开口，通往光纤固定槽的外部，另一端与所述第一安装部、所述第四安装部连通，使得光纤穿过所述第二连通槽进入所述光纤固定槽。
  5. 根据权利要求4所述的光模块，，所述第二连通槽的开口设置导向部，所述导向部为弧形槽。
  6. 根据权利要求1所述的光模块，其中，所述电路板上设有：第一OSA，靠近光口位置设置，并位于所述光纤托架在所述电路板上的投影的外侧；所述第一连通槽的开口朝向所述第一OSA设置；
    第二OSA，设置于所述电路板的中部；
    所述绕纤部设置有让位通孔，用于所述第二OSA的让位。
  7. 根据权利要求1所述的光模块，其中，所述光纤托架还设置有开口，在所述光纤托架上布置有子电路板，子电路板通过柔性电路板与所述电路板电连接，
    其中，所述柔性电路板穿过所述开口与所述子电路板及电路板电连接，
    其中，所述子电路板上设有第三OSA和第四OSA。
  8. 根据权利要求1所述的光模块，还包括：光纤适配器，设置于所述电路板的光口侧，光纤适配器的一端与外部光纤连接，另一端与内部光纤连接。
  9. 根据权利要求8所述的光模块，其中，
    所述上壳体包括：
    盖板；
    第一侧板，垂直设置于所述盖板的一侧；
    第二侧板，垂直设置于所述盖板的另一侧，且位于所述第一侧板的对侧；
    其中，所述盖板朝向光纤托架的内壁设有：
    支撑台，用于支撑所述光纤适配器；
    卡座，垂直设置于所述支撑台上并向所述下壳体方向凸起，用于所述光纤适配器的限位。
  10. 根据权利要求9所述的光模块，其中，所述光纤适配器包括：
    第一光纤适配器，设置于所述电路板的光口侧，用于将光信号由外部光纤传送至内部光纤；
    第二光纤适配器，设置于所述电路板的光口侧、并临近所述第一光纤适配器设置，用于将光信号由内部光纤传送至外部光纤；
    所述卡座包括：第一连接凸起和第二连接凸起，连接凹槽形成在所述第一连接凸起和第二连接凸起之间。
  11. 根据权利要求1所述的光模块，其中，
    所述电路板的电口端设置电连接器；
    所述电连接器部分位于所述下壳体在所述电路板上的正投影的外侧；
    其中，所述光纤托架在所述电路板上的投影覆盖所述电连接器，且与所述上壳体的边缘平齐。
  12. 根据权利要求11所述的光模块，其中，
    所述光纤托架的一端的两侧边缘设置有第一固定孔，
    所述上壳体的一端设置第一通孔，与所述第一固定孔通过螺钉固定连接。
  13. 根据权利要求11所述的光模块，其中，所述光纤托架设置向上壳体方向凸起的第一台阶面，用于所述电连接器的让位。
  14. 根据权利要求11所述的光模块，其中，所述下壳体的端部设置第一螺栓定位柱；
    所述第一螺栓定位柱相对所述下壳体内壁向所述包裹腔体内部凸起；
    所述上壳体设置第一螺栓定位孔，与所述第一螺栓定位柱通过连接件连接；
    所述光纤托架设有第一让位孔，所述第一让位孔侧壁垂直设置第一定位片，所述定位片设有第一螺纹孔，与所述第一螺栓定位孔对应；
    所述第一定位片设置于所述第一螺栓定位柱和所述第一螺栓定位孔之间。
  15. 根据权利要求11所述的光模块，其中，所述上壳体设置第一避让部，用于所述光纤托架的避让安装。
  16. 根据权利要求14所述的光模块，其中，所述第一避让部的一侧设有定位凸起，且所述定位凸起上设有所述第一螺栓定位孔；所述第一定位片设置于所述第一螺栓定位柱和所述定位凸起之间。
  17. 根据权利要求16所述的光模块，其中，所述第一定位片的一侧为第一让位台阶面，与所述定位凸起的外壁连接；
    另一侧为第二让位台阶面，与所述第一螺栓定位柱的外壁连接。
  18. 根据权利要求11所述的光模块，，所述下壳体的中部设置第三螺栓定位柱，
    所述光纤托架设有第三让位孔，与所述第三螺栓定位柱的外壁连接，实现所述光纤托架与所述下壳体的定位。
  19. 根据权利要求18所述的光模块，，所述第三螺栓定位柱的高度高于所述第一螺栓定位柱的高度，所述上壳体设置第三螺栓定位孔，与所述第三螺栓定位柱通过连接件连接。
  20. 根据权利要求15所述的光模块，其中，所述绕纤部中设置有让位通孔，用于电路板上器件的让位，所述第一避让部中设置有向下壳体方向凸起的导热件，用于所述让位通孔内的器件的散热。
PCT/CN2022/097126 2021-08-20 2022-06-06 一种新的光模块 WO2023020075A1 (zh)

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