WO2024040967A1 - Module optique - Google Patents

Module optique Download PDF

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Publication number
WO2024040967A1
WO2024040967A1 PCT/CN2023/084071 CN2023084071W WO2024040967A1 WO 2024040967 A1 WO2024040967 A1 WO 2024040967A1 CN 2023084071 W CN2023084071 W CN 2023084071W WO 2024040967 A1 WO2024040967 A1 WO 2024040967A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
conductive member
elastic conductive
optical module
optical
Prior art date
Application number
PCT/CN2023/084071
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English (en)
Chinese (zh)
Inventor
陈金磊
徐发部
司宝峰
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
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 WO2024040967A1 publication Critical patent/WO2024040967A1/fr

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Classifications

    • 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 disclosure relates to the field of communication technology, and in particular, to an optical module.
  • optical modules are devices that realize photoelectric signal conversion and are one of the key components in optical communication equipment.
  • the present disclosure provides an optical module.
  • the optical module includes an upper housing, a lower housing and an optical fiber array.
  • a first groove is formed in the upper housing, and a first elastic conductive member is placed in the first groove.
  • a second groove is formed in the lower housing, and a second elastic conductive member is placed in the second groove.
  • the upper shell and the lower shell form a shell, and two third grooves are formed in the shell.
  • the two third grooves are located on both sides of the first groove, and the third grooves are connected with the first groove.
  • two third grooves are located on both sides of the second groove, and the third grooves are connected with the second groove.
  • a conductive rubber strip is placed in the third groove, and the conductive rubber strip is connected to the upper shell and the lower shell respectively.
  • the first elastic conductive member is connected to the second elastic conductive member.
  • the optical fiber array is located at the connection between the first elastic conductive member and the second elastic conductive member.
  • the first elastic conductive member and the second elastic conductive member are both connected to the optical fiber array.
  • the width dimension of the first groove connected with the third groove is smaller than the width dimension of the second groove, and the width dimension of the first elastic conductive member is smaller than the width dimension of the second elastic conductive member, so that the second elastic conductive member
  • the surface is connected with conductive tape.
  • the width dimension of the second groove connected to the third groove is smaller than the width dimension of the first groove, and the width dimension of the second elastic conductive member is smaller than the width dimension of the first elastic conductive member, so that the first elastic conductive member
  • the surface is connected with conductive tape.
  • Figure 1 is a partial architecture diagram of an optical communication system according to some embodiments of the present disclosure
  • Figure 2 is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure.
  • Figure 3 is a structural diagram of an optical module provided according to some embodiments of the present disclosure.
  • Figure 4 is a partial exploded view of an optical module provided according to some embodiments of the present disclosure.
  • Figure 5 is a structural diagram of the lower housing of an optical module according to some embodiments of the present disclosure.
  • Figure 6 is a structural diagram of an upper housing in an optical module according to some embodiments of the present disclosure.
  • Figure 7 is a cross-sectional view of an optical module provided according to some embodiments of the present disclosure.
  • Figure 8 is a cross-sectional view from another perspective of an optical module according to some embodiments of the present disclosure.
  • Figure 9 is a structural diagram of the first elastic conductive member, the second elastic conductive member, the conductive rubber strip and the optical fiber ribbon in an optical module according to some embodiments of the present disclosure
  • Figure 10 is a second structural view of the first elastic conductive member, the second elastic conductive member, the conductive rubber strip and the optical fiber ribbon in an optical module according to some embodiments of the present disclosure
  • Figure 11 is a structural diagram three of the first elastic conductive member, the second elastic conductive member, the conductive rubber strip and the optical fiber ribbon in an optical module according to some embodiments of the present disclosure
  • Figure 12 is a structural diagram of the first elastic conductive member, the second elastic conductive member and the conductive adhesive strip in an optical module according to some embodiments of the present disclosure
  • Figure 13 is a structural diagram of a second elastic conductive member and a conductive adhesive strip in an optical module according to some embodiments of the present disclosure
  • Figure 14 is a structural view of an optical module with the upper and lower housings removed according to some embodiments of the present disclosure
  • Figure 15 is a structural view of an optical module without the upper housing and the first elastic conductive member according to some embodiments of the present disclosure
  • FIG. 16 is a structural diagram of an optical module with an upper casing removed according to some embodiments of the present disclosure.
  • first and second are configured for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • plural means two or more.
  • At least one of A, B and C has the same meaning as “at least one of A, B or C” and includes the following combinations of A, B and C: A only, B only, C only, A and B The combination of A and C, the combination of B and C, and the combination of A, B and C.
  • Group A and/or Group B includes the following three combinations: A only, B only, and a combination of A and B.
  • parallel includes absolutely parallel and approximately parallel, and the acceptable deviation range of approximately parallel may be, for example, a deviation within 5°;
  • perpendicular includes absolutely vertical and approximately vertical, and the acceptable deviation range of approximately vertical may also be, for example, Deviation within 5°.
  • equal includes absolute equality and approximate equality, wherein the difference between the two that may be equal within the acceptable deviation range of approximately equal is less than or equal to 5% of either one, for example.
  • Optical communication technology establishes information transmission between information processing equipment.
  • Optical communication technology loads information onto light and uses the propagation of light to realize the transmission of information.
  • Light loaded with information is an optical signal.
  • the propagation of optical signals in information transmission equipment can reduce the loss of optical power and achieve high-speed, long-distance, and low-cost information transmission.
  • the information that information processing equipment can process exists in the form of electrical signals.
  • Optical network terminals/gateways, routers, switches, mobile phones, computers, servers, tablets, and televisions are common information processing equipment.
  • Optical fibers and optical waveguides are common information processing equipment. transmission device.
  • optical modules The mutual conversion of optical signals and electrical signals between information processing equipment and information transmission equipment is achieved through optical modules.
  • an optical fiber is connected to the optical signal input end and/or the optical signal output end of the optical module, and an optical network terminal is connected to the electrical signal input end and/or the electrical signal output end of the optical module;
  • the first optical signal transmission from the optical fiber Entering the optical module the optical module converts the first optical signal into a first electrical signal, and the optical module transmits the first electrical signal into the optical network terminal;
  • the second electrical signal from the optical network terminal is transmitted into the optical module, and the optical module transmits the second electrical signal into the optical module.
  • the electrical signal is converted into a second optical signal, and the optical module transmits the second optical signal into the optical fiber.
  • information processing equipment can be connected to each other through electrical signal networks, at least one type of information processing equipment needs to be directly connected to the optical module. It is not required that all types of information processing equipment are directly connected to the optical module. The information of the optical module is directly connected. The processing equipment is called the host computer of the optical module.
  • Figure 1 is a partial architectural diagram of an optical communication system provided according to some embodiments of the present disclosure. As shown in Figure 1, the optical communication system is partially represented by a remote information processing device 1000, a local information processing device 2000, and a host computer. 100. Optical module 200, optical fiber 101 and network cable 103.
  • One end of the optical fiber 101 extends toward the remote information processing device 1000, and the other end is connected to the optical interface of the optical module 200.
  • the optical signal can undergo total reflection in the optical fiber 101.
  • the propagation of the optical signal in the total reflection direction can almost maintain the original optical power.
  • the optical signal undergoes total reflection multiple times in the optical fiber 101 and will come from the direction of the remote information processing device 1000.
  • the optical signal is transmitted into the optical module 200, or the light from the optical module 200 is propagated toward the remote information processing device 1000 to realize long-distance information transmission with low power loss.
  • the number of optical fibers 101 may be one or multiple (two or more); the optical fibers 101 and the optical module 200 may be pluggable or fixedly connected.
  • the host computer 100 has an optical module interface 102, and the optical module interface 102 is configured to access the optical module 200, so that the host computer 100 and the optical module 200 establish a one-way/bi-directional electrical signal connection; the host computer 100 is configured to connect to the optical module 200.
  • 200 provides data signals, or receives data signals from the optical module 200, or monitors and controls the working status of the optical module 200.
  • the host computer 100 has an external electrical interface, such as a Universal Serial Bus interface (Universal Serial Bus, USB) and a network cable interface 104.
  • the external electrical interface can be connected to an electrical signal network.
  • the network cable interface 104 is configured to connect to the network cable 103 so that the host computer 100 and the network cable 103 establish a one-way/bi-directional electrical signal connection.
  • Optical Network Unit Optical Line Terminal
  • ONT Optical Network Equipment
  • data center servers are common host computers.
  • the network cable 103 establishes an electrical signal connection between the local information processing device 2000 and the host computer 100.
  • the third electrical signal sent by the local information processing device 2000 is transmitted to the host computer 100 through the network cable 103.
  • the host computer 100 generates a second electrical signal based on the third electrical signal, and the second electrical signal from the host computer 100 is transmitted into the optical module. 200.
  • the optical module 200 converts the second electrical signal into a second optical signal.
  • the optical module 200 transmits the second optical signal into the optical fiber 101.
  • the second optical signal is transmitted to the remote information processing device 1000 in the optical fiber 101.
  • the first optical signal from the direction of the remote information processing device 1000 is propagated through the optical fiber 101.
  • the first optical signal from the optical fiber 101 is transmitted into the optical module 200.
  • the optical module 200 converts the first optical signal into a first electrical signal.
  • the optical module 200 transmits the first electrical signal to the host computer 100.
  • the host computer 100 generates a fourth electrical signal based on the first electrical signal.
  • the host computer 100 transmits the fourth electrical signal to the local information processing device 2000.
  • the optical module is a tool that realizes the mutual conversion of optical signals and electrical signals. During the above-mentioned conversion process of optical signals and electrical signals, the information does not change, and the encoding and decoding method of the information can change.
  • FIG. 2 is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure.
  • the host computer 100 also includes a PCB circuit board 105 provided in the housing, a cage 106 provided on the surface of the PCB circuit board 105, a radiator 107 provided on the cage 106, and a heat sink 107 provided inside the cage 106.
  • the heat sink 107 has a protruding structure that increases the heat dissipation area, and the fin-like structure is a common protruding structure.
  • the optical module 200 is inserted into the cage 106 of the host computer 100, and the optical module 200 is fixed by the cage 106.
  • the heat generated by the optical module 200 is conducted to the cage 106, and then diffused through the heat sink 107.
  • the electrical interface of the optical module 200 is connected to the electrical connector inside the cage 106.
  • FIG. 3 is a structural diagram of an optical module provided according to some embodiments of the present disclosure
  • FIG. 4 is a partial exploded view of an optical module provided according to some embodiments of the present disclosure.
  • the optical module 200 includes a shell, a circuit board 300 disposed in the shell, an optoelectronic chip disposed on the circuit board 300 , a lens assembly 400 and an optical fiber array 500 .
  • the optoelectronic chip disposed on the circuit board 300 includes a light emitting chip and/or a light receiving chip.
  • the housing includes an upper housing 201 and a lower housing 202.
  • the upper housing 201 is covered on the lower housing 202 to form the above-mentioned housing with two openings 204 and 205; the outer contour of the housing generally presents a square body.
  • the lower case 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021; the upper case 201 includes a cover plate 2011, and the cover plate 2011 covers the lower case. on the two lower side plates 2022 of 202 to form the above-mentioned housing.
  • the lower case 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021;
  • the upper case 201 includes a cover plate 2011, and two lower side plates 2022 located on both sides of the cover plate 2011.
  • the two upper side plates arranged perpendicularly to the cover plate 2011 are combined with the two lower side plates 2022 to realize that the upper housing 201 is covered on the lower housing 202 .
  • the direction of the connection between the two openings 204 and 205 may be consistent with the length direction of the optical module 200 , or may be inconsistent with the length direction of the optical module 200 .
  • the opening 204 is located at the end of the optical module 200 (the right end of FIG. 3 ), and the opening 205 is also located at the end of the optical module 200 (the left end of FIG. 3 ).
  • the opening 204 is located at an end of the optical module 200 and the opening 205 is located at a side of the optical module 200 .
  • the opening 204 is an electrical interface, and the golden finger 301 of the circuit board 300 extends from the electrical interface and is inserted into the electrical connector of the host computer; the opening 205 is an optical port, configured to access the optical fiber 101, so that the optical fiber 101 is connected to the optical module 200 Fiber array 500 in.
  • the assembly method of combining the upper casing 201 and the lower casing 202 is used to facilitate the installation of the circuit board 300, the optoelectronic chip, the lens assembly 400 and the optical fiber array 500 and other components into the above casing.
  • the upper casing 201 and the lower casing 202 can Encapsulate and protect these components.
  • the upper housing 201 and the lower housing 202 are made of metal materials, which facilitates electromagnetic shielding and heat dissipation.
  • the light module 200 also includes an unlocking component 203 located outside its housing.
  • the unlocking component 203 is configured to realize a fixed connection between the optical module 200 and the host computer, or to release the fixed connection between the optical module 200 and the host computer.
  • the unlocking component 203 is located outside the two lower side plates 2022 of the lower housing 202 and includes an engaging component that matches the cage 106 of the host computer.
  • the optical module 200 is inserted into the cage 106, the optical module 200 is fixed in the cage 106 by the engaging parts of the unlocking part 203; when the unlocking part 203 is pulled, the engaging parts of the unlocking part 203 move accordingly, thereby changing the engaging parts.
  • the connection relationship with the host computer is to release the fixed connection between the optical module 200 and the host computer, so that the optical module 200 can be pulled out of the cage 106 .
  • the circuit board 300 includes circuit wiring, electronic components, chips, etc.
  • the electronic components and chips are connected together according to the circuit design through the circuit wiring to realize functions such as power supply, electrical signal transmission, and grounding.
  • Electronic components may include, for example, capacitors, resistors, transistors, and metal-oxide-semiconductor field-effect transistors (MOSFETs).
  • the chip may include, for example, a microcontroller unit (Microcontroller Unit, MCU), laser driver chip, transimpedance amplifier (Transimpedance Amplifier, TIA), limiting amplifier (Limiting Amplifier, LA), clock data recovery chip (Clock and Data Recovery, CDR), power management chip, digital signal processing (Digital Signal Processing, DSP) chip.
  • the circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also perform a load-bearing function. For example, the rigid circuit board can stably carry the above-mentioned electronic components and chips; the rigid circuit board can also be easily inserted into the host computer cage. in electrical connectors.
  • the circuit board 300 also includes a gold finger 301 formed on an end surface thereof, and the gold finger 301 is composed of a plurality of independent pins.
  • the circuit board 300 is inserted into the cage 106, and the golden finger 301 is connected to the electrical connector in the cage 106.
  • the golden fingers 301 may be provided only on one side of the circuit board 300 (for example, the upper surface shown in FIG. 4 ), or may be provided on the upper and lower surfaces of the circuit board 300 to provide more pins.
  • the golden finger 301 is configured to establish an electrical connection with the host computer to realize power supply, grounding, I2C signal transmission, data signal transmission, etc.
  • flexible circuit boards are also used in some optical modules.
  • Flexible circuit boards are generally used in conjunction with rigid circuit boards to supplement the rigid circuit boards.
  • the lens assembly 400 is disposed on the circuit board 300 and is placed over the optoelectronic chip in a cover-buckle manner.
  • the optoelectronic chip mainly refers to a light emitting chip, a driver chip, a light receiving chip, and a transimpedance amplification chip. Chips, limiting amplification chips and other chips related to photoelectric conversion functions.
  • the lens assembly 400 and the circuit board 300 form a cavity that encloses optoelectronic chips such as a light emitting chip and a light receiving chip.
  • the lens assembly 400 and the circuit board 300 together form a structure for packaging optoelectronic chips.
  • the light emitting chip is disposed on the surface of the circuit board 300 , and the light emitted by the light emitting chip is perpendicular to the circuit board 300 ; the light receiving chip is disposed on the surface of the circuit board 300 , and the light receiving direction of the light receiving chip is perpendicular to the circuit board 300 .
  • the light emitted by the light emitting chip enters the horizontally arranged optical fiber array 500 after being reflected by the lens assembly 400, and the light from the horizontally arranged optical fiber array 500 enters the light receiving chip after being reflected by the lens assembly 400.
  • the lens assembly is in the light emitting chip. , an optical connection is established between the light receiving chip and the optical fiber array.
  • the lens assembly not only seals the optoelectronic chip, but also establishes an optical connection between the optoelectronic chip and the optical fiber array.
  • the lens assembly 400 can be made of polymer material through an injection molding process. In some embodiments, the lens assembly 400 is made of materials with good light transmittance such as polyetherimide (PEI) plastic (Ultem series).
  • PEI polyetherimide
  • the molding mold can be greatly reduced, and the manufacturing cost and complexity are reduced.
  • the lens assembly 400 after the lens assembly 400 is placed over the optoelectronic chip on the circuit board 300, only the positions of the outgoing beam, the incident beam and the optical fiber array 500 need to be adjusted, making installation and debugging simple.
  • optical coupling structure design between the optical fiber array 500 and the lens assembly 400.
  • the multiple channels of converged light from the lens assembly 400 are incident on the multiple channels of optical fibers in the optical fiber array 500.
  • the optical structure of the lens assembly 400 is used to realize the coupling between the optical fiber array 500 and the lens assembly 400.
  • Optical connections to light-emitting chips Multiple paths of light from the optical fiber array 500 are incident into the lens assembly 400, and the optical structure of the lens assembly 400 is used to realize the optical connection between the optical fiber array 500 and the light receiving chip.
  • optical fiber adapter 600 in order to connect the optical module to an external optical fiber connector, it is often necessary to provide matching structures, such as the optical fiber adapter 600, at the upper and lower housings and the optical interface.
  • the optical fiber adapter 600 is located at the optical interface formed by the upper and lower housings, and is a connector that connects the optical module to the optical fiber connector (optical fiber) outside the optical module.
  • Fiber optic adapters generally have standard shapes and sizes to facilitate the insertion of external fiber optic connectors/plugs. They have multiple fiber optic interfaces inside, including interfaces for outgoing optical signals and interfaces for incoming optical signals. Common fiber optic connectors/plugs are MT type fiber optic connectors (such as fiber optic jumper connectors (Multi-fiber Push On, MPO)). Insert the optical fiber connector/plug into the optical fiber adapter of the optical module so that the optical signal inside the optical module can be transmitted into the external optical fiber, and the optical signal outside the optical module can be transmitted into the inside of the optical module.
  • MPO Multi-fiber Push On
  • an optical connection is established between one end of the optical fiber array 500 and the lens assembly 400, and an optical connection is established between the other end and the optical fiber adapter 600.
  • the optical fiber array 500 is composed of multiple (two or more) optical fibers, which transmits the light from the lens assembly 400 to the optical fiber adapter 600, thereby realizing the external transmission of optical signals; and the optical fiber array 500 transmits the light from the optical fiber adapter 600 to The lens assembly 400 realizes receiving optical signals from outside the optical module.
  • Figure 5 is a structural diagram of the lower housing of an optical module provided according to some embodiments of the present disclosure.
  • Figure 6 is a structural diagram of the upper housing of an optical module provided according to some embodiments of the present disclosure.
  • Figure 7 is a structural diagram of the upper housing of an optical module provided according to some embodiments of the present disclosure.
  • FIG. 8 is a cross-sectional view of an optical module provided by some embodiments of the present disclosure from another perspective.
  • a first groove 20111 is formed in the upper housing 201
  • a second groove 20211 is formed in the lower housing 202.
  • the first groove 20111 and the second groove 20211 form a storage cavity through which the optical fiber array 500 is connected to the optical fiber adapter 600 .
  • a conductive member 700 is placed in the storage cavity formed by the first groove 20111 and the second groove 20211.
  • the conductive member 700 includes a first elastic conductive member 701 and a second elastic conductive member 702.
  • the first elastic conductive member 701 is placed in In the first groove 20111
  • the second elastic conductive member 702 is placed in the second groove 20211.
  • Figure 9 is a structural diagram of the first elastic conductive member, the second elastic conductive member, the conductive rubber strip and the optical fiber ribbon in an optical module according to some embodiments of the present disclosure.
  • Figure 10 is a second structural diagram of the first elastic conductive member, the second elastic conductive member, the conductive rubber strip and the optical fiber ribbon in an optical module according to some embodiments of the present disclosure.
  • Figure 11 is a third structural view of the first elastic conductive member, the second elastic conductive member, the conductive rubber strip and the optical fiber ribbon in an optical module according to some embodiments of the present disclosure.
  • the first elastic conductive member 701 and the second elastic conductive member 702 are in contact connection, and the optical fiber array 500 is located at the connection between the first elastic conductive member 701 and the second elastic conductive member 702, and The first elastic conductive member 701 and the second elastic conductive member 702 are seamlessly connected to the optical fiber array 500, so that there is no gap between the first elastic conductive member 701, the second elastic conductive member 702 and the optical fiber array 500.
  • first elastic conductive member 701 and the second elastic conductive member 702 are elastic, when the first elastic conductive member 701 and the second elastic conductive member 702 are connected, the first elastic conductive member 701 and the second elastic conductive member 702 can be squeezed The connection is made so that the first elastic conductive member 701 and the second elastic conductive member 702 are in full contact to ensure a seamless connection between the first elastic conductive member 701 and the second elastic conductive member 702 .
  • the optical fiber array 500 is in extrusion contact with the first elastic conductive member 701 and the second elastic conductive member 702, so that the first elastic conductive member 701 and the second elastic conductive member 702 are pressed and connected.
  • the elastic conductive member 702 is in full contact with the optical fiber array 500 to ensure seamless connection between the first elastic conductive member 701 and the second elastic conductive member 702 and the optical fiber array 500 .
  • the elasticity of the first elastic conductive member 701 and the second elastic conductive member 702 can not only make the first elastic conductive member 701 , the second elastic conductive member 702 fully contact with the optical fiber array 500 , but also protect the optical fiber array 500 .
  • the first groove 20111 is formed by the cover plate 2011 of the upper housing 201 recessing into the inner side of the upper housing 201 .
  • the first groove 20111 has a bottom surface, a first side and a second side. , the first side, the bottom surface and the second side are connected in sequence, and the first side and the second side are arranged oppositely.
  • the bottom surface of the first groove 20111 is disposed correspondingly to the bottom surface of the first elastic conductive member 701
  • the first side of the first groove 20111 is disposed correspondingly to the first side of the first elastic conductive member 701
  • the second side of the first groove 20111 is disposed correspondingly.
  • the side surface is arranged corresponding to the second side surface of the first elastic conductive member 701 .
  • the bottom surface of the first groove 20111 is seamlessly connected to the bottom surface of the first elastic conductive member 701, and the first side of the first groove 20111 is connected to the first elastic member 701.
  • the first side of the conductive member 701 is seamlessly connected, and the second side of the first groove 20111 is seamlessly connected to the second side of the first elastic conductive member 701, so that the first elastic conductive member 701 and the first groove 20111 are seamlessly connected. connection to ensure full contact between the first elastic conductive member 701 and the upper housing 201 .
  • the second groove 20211 is formed by the bottom plate 2021 of the lower housing 202 recessing the inside of the lower housing 202 .
  • the second groove 20211 has a bottom surface, a first side and a second side. , the first side, the bottom surface and the second side are connected in sequence, and the first side and the second side are arranged oppositely.
  • the bottom surface of the second groove 20211 is disposed correspondingly to the bottom surface of the second elastic conductive member 702
  • the first side of the second groove 20211 is disposed correspondingly to the first side of the second elastic conductive member 702
  • the second side of the second groove 20211 is disposed correspondingly.
  • the side surface is arranged corresponding to the second side surface of the second elastic conductive member 702 .
  • the bottom surface of the second groove 20211 is seamlessly connected to the bottom surface of the second elastic conductive member 702, and the first side of the second groove 20211 is connected to the second elastic conductive member 702.
  • the first side of the conductive member 702 is seamlessly connected, and the second side of the second groove 20211 is seamlessly connected to the second side of the second elastic conductive member 702, so that the second elastic conductive member 702 and the second groove 20211 are seamlessly connected. connection to ensure full contact between the second elastic conductive member 702 and the lower housing 202 .
  • two third grooves are formed in the housing formed by the upper housing 201 and the lower housing 202 , and the third grooves are used to place the conductive adhesive strips 800 .
  • the third groove can be provided on the upper housing 201, and the two third grooves are located on both sides of the first groove 20111; or, the third groove can be provided on the lower housing 202, and the two third grooves can be provided on the lower housing 202.
  • Three grooves are located on both sides of the second groove 20211.
  • the third groove is located on both sides of the first groove 20111, the third groove is located on the cover 2011 of the upper housing 201, the third groove is connected with the first groove 20111, and the third groove is connected with the second groove 20111. Groove 20211 is not connected.
  • the third groove 20212 when the third groove 20212 is located on both sides of the second groove 20211, the third groove 20212 is located on the bottom plate 2021 of the lower housing 202, and the third groove 20212 is connected with the second groove 20211. , the third groove 20212 is not connected with the first groove 20111.
  • the third groove 20212 when the third groove 20212 is located on both sides of the second groove 20211, the third groove 20212 extends from the side wall of the second groove 20211 toward the lower side plate 2022 of the lower housing 202, The conductive adhesive strip 800 is placed in the third groove 20212.
  • the conductive adhesive strip 800 can fully contact the upper case 201 and the lower case 202 except for the first groove 20111 and the second groove 20211.
  • the conductive adhesive strip 800 is formed by directly dispensing conductive adhesive on the third groove 20212 and then solidifying, there is a certain operating error in the dispensing of the conductive adhesive, which may cause the conductive adhesive strip 800 to be in contact with the third groove 20211 in the second groove 20211 .
  • Second bomb The elastic conductive parts 702 are not connected, so that there is a gap between the first elastic conductive part 701 and the second elastic conductive part 702, causing the upper case 201 and the lower case 202 to be unable to fully contact, thereby affecting electromagnetic shielding.
  • the conductive rubber strip 800 is placed in the third groove, the first groove or the second groove that is not connected to the third groove.
  • the surface of the elastic conductive member is connected with the conductive rubber strip 800 so that the gap between the upper case 201 and the lower case 202 is filled with the conductive adhesive strip 800 .
  • the width dimension of the first groove 20111 is smaller than the width dimension of the second groove 20211, and the width dimension of the first elastic conductive member 701 is smaller than the second elastic conductive member 702
  • the conductive rubber strip 800 in the third groove is connected to the upper surface of the second elastic conductive member 702 .
  • the upper surface of the second elastic conductive member 702 refers to the surface of other areas of the second elastic conductive member 702 outside the area connected to the first elastic conductive member 701 .
  • Figure 12 is a structural diagram of the first elastic conductive member, the second elastic conductive member and the conductive tape in an optical module according to some embodiments of the present disclosure.
  • Figure 13 is an optical module provided according to some embodiments of the present disclosure. Structural diagram of the second elastic conductive member and conductive strip. As shown in Figures 8, 12 and 13, when the third groove 20212 is located on both sides of the second groove 20211, the width of the second groove 20211 is smaller than the width of the first groove 20111, and the second elasticity The width dimension of the conductive member 702 is smaller than the width dimension of the first elastic conductive member 701 , and the conductive rubber strip 800 in the third groove 20212 is connected to the lower surface of the first elastic conductive member 701 .
  • the lower surface of the first elastic conductive member 701 refers to the lower surface of other areas of the first elastic conductive member 701 except the area connected to the second elastic conductive member 702 .
  • Figure 14 is a structural diagram of an optical module provided according to some embodiments of the present disclosure, with the upper housing and lower housing removed.
  • Figure 15 is a structural diagram of an optical module provided according to some embodiments of the present disclosure, with the upper housing and lower housing removed. Structural view of the first elastic conductive member.
  • FIG. 16 is a structural view of an optical module with the upper casing removed according to some embodiments of the present disclosure. As shown in Figures 14, 15 and 16, the surface of the first elastic conductive member 701 or the second elastic conductive member 702 is connected to the conductive rubber strip 800, and the conductive rubber strip 800 is used to fill the space between the upper case 201 and the lower case 202.
  • the conductive rubber strip 800 is not only connected to the lower surface of the first elastic conductive member 701, but also connected to the side surface of the second elastic conductive member 702, so that the first elastic conductive member 701 and the second elastic conductive member 702 are connected to each other.
  • the contact surfaces are extruded and connected, and other areas where the upper housing 201 and the lower housing 202 are in contact are connected through conductive rubber strips 800, so that the upper housing 201 and the lower housing 202 are further fully contacted, so that the upper housing 201 and the first
  • the elastic conductive member 701, the second elastic conductive member 702, the conductive rubber strip 800 and the lower shell 202 form a closed cavity.
  • the electromagnetic radiation inside the closed cavity cannot penetrate, which effectively reduces the electromagnetic radiation and thereby acts as an electromagnetic shielding. effect.
  • the gap between the upper casing 201 and the lower casing 202 should be within a preset range to allow the conductive adhesive strip 800 to pass through. Fill the gap between the upper case 201 and the lower case 202.
  • the first side of the second groove 20211 is disposed corresponding to the first side of the first groove 20111 (arranged along the up and down direction), and the second side of the second groove 20211 is disposed correspondingly to the first side of the first groove 20211 .
  • the second side surface of the first groove 20111 is provided correspondingly (disposed along the up and down direction).
  • the vertical distance (distance in the up-down direction) between the first side of the second groove 20211 and the first side of the first groove 20111 is 0.5mm ⁇ 2mm.
  • the vertical distance (distance in the up and down direction) between the two side surfaces and the second side surface of the first groove 20111 is 0.5 mm to 2 mm.
  • the conductive rubber strip 800 may not be connected to the first elastic conductive member 701 in the first groove 20111, or may not be connected to the first elastic conductive member 701 in the first groove 20111.
  • the second elastic conductive member 702 in the second groove 20211 is connected so that the upper housing 201 and the lower housing 202 cannot fully contact, thereby affecting the electromagnetic shielding effect.
  • the vertical distance between the first side of the second groove 20211 and the first side of the first groove 20111 is greater than 2 mm, and the distance between the second side of the second groove 20211 and the second side of the first groove 20111 When the vertical distance between them is greater than 2 mm, the gap between the upper housing 201 and the lower housing 202 is larger, which is not suitable for some small-sized optical modules. Therefore, in some embodiments, the vertical distance between the first side of the second groove 20211 and the first side of the first groove 20111 is 0.5mm ⁇ 2mm, and the second side of the second groove 20211 and the first side of the first groove 20211 are The vertical distance between the second side surfaces of a groove 20111 is 0.5mm ⁇ 2mm.
  • the vertical distance between the first side of the second groove 20211 and the first side of the first groove 20111 is equal to the second side of the second groove 20211 and the second side of the first groove 20111 the vertical distance between them.
  • the optical fiber array 500 passes through the connection between the first elastic conductive member 701 and the second elastic conductive member 702 of the conductive member 700, and the optical fiber can be supported by the first elastic conductive member 701 and the second elastic conductive member 702.
  • the array 500 can also fill the gap between the upper housing 201 and the lower housing 202 through the first elastic conductive member 701 and the second elastic conductive member 702.
  • the conductive member 700 can be a conductive gasket or conductive foam.
  • the conductive member 700 may be a conductive pad.
  • the first elastic conductive member 701 is a first elastic conductive pad
  • the second elastic conductive member 702 is a second elastic conductive pad.
  • the conductive member 700 may also be conductive foam.
  • the first elastic conductive member 701 is a first elastic conductive foam
  • the second elastic conductive member 702 is a second elastic conductive foam.
  • a first limiting protrusion 20112 and a second limiting protrusion 20213 are also provided in the housing.
  • the first limiting protrusion 20112 extends from the cover plate 2011 of the upper housing 201 to the
  • the lower housing 202 is formed with a bulge in the direction, and the first limiting protrusion 20112 is located on one side of the first groove 20111;
  • the second limiting protrusion 20213 is protruded from the bottom plate 2021 of the lower housing 202 in the direction of the upper housing 201 Formed, the second limiting protrusion 20213 is located on one side of the second groove 20211, and the second limiting protrusion 20213 is not connected to the first limiting protrusion 20112.
  • the present disclosure is not limited thereto.
  • one of the first limiting protrusion 20112 and the second limiting protrusion 20213 is provided in the housing.
  • the optical fiber adapter 600 When the optical fiber adapter 600 is inserted into the optical interface of the optical module, one end of the optical fiber adapter 600 abuts the first limiting protrusion 20112 and/or the second limiting protrusion 20213, so as to pass through the first limiting protrusion 20112 and/or the second limiting protrusion 20213. Or the second limiting protrusion 20213 defines the position of the optical fiber adapter 600 .
  • the first limiting protrusion 20112 and the second limiting protrusion 20213 are arranged correspondingly in the up and down direction, and the second limiting protrusion 20213 and the first limiting protrusion 20112 form a first gap, and the optical fiber array 500 passes through this first gap.
  • a first supporting protrusion 20113 and a second supporting protrusion 20113 may also be provided in the housing.
  • Support protrusion 20214, the first support protrusion 20113 is formed by the cover plate 2011 of the upper housing 201 protruding in the direction of the lower housing 202, the first support protrusion 20113 is located on the other side of the first groove 20111; the second The support protrusion 20214 is formed by protruding from the bottom plate 2021 of the lower case 202 in the direction of the upper case 201.
  • the second support protrusion 20214 is located on the other side of the second groove 20211, and the first support protrusion 20113 is in contact with the second support protrusion 20214. Bump 20214 is not connected.
  • one of the first support protrusion 20113 and the second support protrusion 20214 is provided in the housing.
  • first supporting protrusion 20113 and the first limiting protrusion 20112 are respectively located at both ends of the first groove 20111
  • the second supporting protrusion 20214 and the second limiting protrusion 20213 are respectively located at the second recess. Both ends of slot 20211.
  • the first support protrusion 20113 and the second support protrusion 20214 are arranged correspondingly in the up and down direction.
  • the first support protrusion 20113 and the second support protrusion 20214 form a second gap.
  • the first gap and the second gap are respectively located in the first recess.
  • the groove 20111 and the second groove 20211 form two ends of the storage cavity.
  • the optical fiber array 500 is inserted into the optical fiber adapter 600 after the lens assembly 400 passes through the second gap, the storage cavity and the first gap in sequence.
  • the first groove 20111 is recessed in the first limiting protrusion 20112 or the first supporting protrusion 20113, and the height difference between the lower surface of the first elastic conductive member 701 and the bottom surface of the first groove 20111 is greater than the first
  • the height difference between the limiting protrusion 20112 and the bottom surface of the first groove 20111 may be greater than the height difference between the first supporting protrusion 20113 and the bottom surface of the first groove 20111.
  • there is a first height difference between the lower surface of the first elastic conductive member 701 and the bottom surface of the first groove 20111 there is a first height difference between the first limiting protrusion 20112 or the first support protrusion 20113 and the bottom surface of the first groove 20111.
  • There is a second height difference and the first height difference is greater than the second height difference.
  • the second groove 20211 is recessed in the second limiting protrusion 20213 or the second supporting protrusion 20214.
  • the height difference between the upper surface of the second elastic conductive member 702 and the bottom surface of the second groove 20211 is greater than the height difference between the second limiting protrusion 20213 and the second supporting protrusion 20214.
  • the height difference between the bottom surface of the second groove 20211 may be greater than the height difference between the second support protrusion 20214 and the bottom surface of the second groove 20211.
  • the third height difference between the upper surface of the second elastic conductive member 702 and the bottom surface of the second groove 20211, and there is a third height difference between the second limiting protrusion 20213 or the second supporting protrusion 20214 and the bottom surface of the second groove 20211.
  • There is a fourth height difference and the third height difference is greater than the fourth height difference.
  • the present disclosure provides an optical module, which includes an upper housing and a lower housing.
  • a first groove is formed in the upper housing, and a second groove is formed in the lower housing.
  • the first groove and the second groove form a storage cavity.
  • a first elastic conductive member is placed in the first groove, and the first elastic conductive member is seamlessly connected to the first groove, so that the first elastic conductive member is in full contact with the upper case.
  • a second elastic conductive member is placed in the second groove, and the second elastic conductive member is seamlessly connected to the second groove, so that the second elastic conductive member is in full contact with the lower case.
  • the optical module also includes an optical fiber array.
  • the optical fiber array is located at the connection between the first elastic conductive member and the second elastic conductive member, so that both the first elastic conductive member and the second elastic conductive member are seamlessly connected to the optical fiber array.
  • the first elastic conductive member and the second elastic conductive member have elasticity, when the first elastic conductive member and the second elastic conductive member are pressed and connected, the first elastic conductive member and the second elastic conductive member are connected seamlessly, so that the first elastic conductive member The conductive member is in full contact with the second elastic conductive member.
  • the optical fiber array passes through the connection between the first elastic conductive member and the second elastic conductive member, the first elastic conductive member and the second elastic conductive member are seamlessly connected to the optical fiber array respectively, so that the first elastic conductive member and the second elastic conductive member The conductive parts are in full contact with the optical fiber array.
  • Two third grooves are formed in the housing formed by the lower housing and the upper housing, and the two third grooves are connected with the first groove or
  • the conductive rubber strip is placed in the third groove, and the conductive rubber strip can fully contact the upper shell and the lower shell except the first groove and the second groove.
  • the third groove may be located on both sides of the first groove or on both sides of the second groove.
  • the width dimension of the first groove is smaller than the width dimension of the second groove
  • the width dimension of the first elastic conductive member is smaller than the width dimension of the second elastic conductive member.
  • the upper surface of the two elastic conductive parts is connected with the conductive adhesive strip.
  • the width dimension of the second groove connected to the third groove is smaller than the width dimension of the first groove
  • the width dimension of the second elastic conductive member is smaller than the first elastic conductive member.
  • the width dimension of the conductive member, the lower surface of the first elastic conductive member is connected to the conductive rubber strip.
  • the lower surface of the first elastic conductive member or the upper surface of the second elastic conductive member is connected to the conductive rubber strip, so that the upper housing and the lower housing are in full contact, thereby forming a closed cavity, and electromagnetic radiation inside the closed cavity cannot penetrate comes out, effectively reducing electromagnetic radiation, thereby playing the role of electromagnetic shielding.
  • the conductive rubber strip in the third groove makes full contact between the upper case and the lower case except for the first groove and the second groove
  • the first elastic conductive strip in the first groove makes The member is in full contact with the second elastic conductive member in the second groove, and the optical fiber array passes through the connection between the first elastic conductive member and the second elastic conductive member, so that the upper housing, the first elastic conductive member, the second elastic conductive member
  • the conductive parts, conductive rubber strips and lower shell form a closed cavity, which effectively reduces electromagnetic radiation and thus plays the role of electromagnetic shielding.

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

Abstract

L'invention concerne un module optique (200), comprenant une coque supérieure (201), une coque inférieure (202) et un réseau de fibres optiques (500). Un premier évidement (20111) est formé dans la coque supérieure (201), et un deuxième évidement (20211) est formé dans la coque inférieure (202). Un troisième évidement (20212) est formé dans un boîtier formé par la coque supérieure (201) et la coque inférieure (202), le troisième évidement (20212) étant situé sur deux côtés du premier évidement (20111) et étant en communication avec le premier évidement (20111), ou le troisième évidement (20212) étant situé sur deux côtés du deuxième évidement (20211) et étant en communication avec le deuxième évidement (20211). Un premier élément conducteur élastique (701) est placé dans le premier évidement (20111), un second élément conducteur élastique (702) est placé dans le deuxième évidement (20211), le premier élément conducteur élastique (701) est relié au second élément conducteur élastique (702), et le réseau de fibres optiques (500) est situé au niveau du joint du premier élément conducteur élastique (701) et du second élément conducteur élastique (702). Un connecteur élastomère (800) connecté séparément à la coque supérieure (201) et à la coque inférieure (202) est placé dans le troisième évidement (20212). La largeur du premier évidement (20111) en communication avec le troisième évidement (20212) est inférieure à la largeur du deuxième évidement (20211), ou la largeur du deuxième évidement (20211) en communication avec le troisième évidement (20212) est inférieure à la largeur du premier évidement (20111).
PCT/CN2023/084071 2022-08-22 2023-03-27 Module optique WO2024040967A1 (fr)

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CN202222210758.0U CN218037454U (zh) 2022-08-22 2022-08-22 一种光模块
CN202222210758.0 2022-08-22

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN218037454U (zh) * 2022-08-22 2022-12-13 青岛海信宽带多媒体技术有限公司 一种光模块

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US20090060519A1 (en) * 2007-08-28 2009-03-05 Emcore Corporation Internal EMI Washer for Optical Transceiver with Parallel Optic Fiber Ribbon
CN203981924U (zh) * 2014-07-04 2014-12-03 河北华美光电子有限公司 Qsfp+光模块
CN206923238U (zh) * 2017-07-26 2018-01-23 太仓市同维电子有限公司 一种emi全方位屏蔽的光模块
CN107660115A (zh) * 2017-09-18 2018-02-02 青岛海信宽带多媒体技术有限公司 光模块
CN108008508A (zh) * 2017-11-27 2018-05-08 昂纳信息技术（深圳）有限公司 一种光纤封堵结构及系统
CN108037568A (zh) * 2017-12-22 2018-05-15 昂纳信息技术（深圳）有限公司 一种光模块
CN218037454U (zh) * 2022-08-22 2022-12-13 青岛海信宽带多媒体技术有限公司 一种光模块

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090060519A1 (en) * 2007-08-28 2009-03-05 Emcore Corporation Internal EMI Washer for Optical Transceiver with Parallel Optic Fiber Ribbon
CN203981924U (zh) * 2014-07-04 2014-12-03 河北华美光电子有限公司 Qsfp+光模块
CN206923238U (zh) * 2017-07-26 2018-01-23 太仓市同维电子有限公司 一种emi全方位屏蔽的光模块
CN107660115A (zh) * 2017-09-18 2018-02-02 青岛海信宽带多媒体技术有限公司 光模块
CN108008508A (zh) * 2017-11-27 2018-05-08 昂纳信息技术（深圳）有限公司 一种光纤封堵结构及系统
CN108037568A (zh) * 2017-12-22 2018-05-15 昂纳信息技术（深圳）有限公司 一种光模块
CN218037454U (zh) * 2022-08-22 2022-12-13 青岛海信宽带多媒体技术有限公司 一种光模块

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