New multi-channel analog optical transceiver module

Abstract

The present application relates to a novel multi-channel analog optical transceiver module. The novel multi-channel analog optical transceiver module includes a first shell, a second shell and a circuit board assembly. The circuit board assembly is arranged between the first shell and the second shell. The circuit board assembly includes electronic devices and optical devices. The second shell is provided with a radio frequency power multiplexing interface. The radio frequency interface and the power interface are integrated into a standard radio frequency power multiplexing interface and installed up and down, so that the appearance structure of the novel multi-channel analog optical transceiver module is simpler, the volume is reduced, and the integration is improved. The radio frequency power multiplexing interface will not accumulate dust, and improves the plug-in performance, reduces the frequency of plug-in operations in actual applications, and can increase the service life.

Description

Technical Field

[0001] The present application relates to the optoelectronics field, and in particular to a novel multi-channel analog optical transceiver module. Background Art

[0002] In the prior art, an optical transceiver module is usually composed of optoelectronic devices, functional circuits, optical interfaces and radio frequency interfaces, etc. The optoelectronic devices include two paths for transmission and reception. Optical transceiver modules can be divided into 1×9, SFP, SFF, GBIC, XENPAK, XFP and other types according to the packaging. However, the new multi-channel analog optical transceiver module in the existing optical transceiver module has many functional interfaces, which makes the structure of the optical transceiver module complex and large in size. Summary of the invention

[0003] Based on this, in order to solve the above problems, a novel multi-channel analog optical transceiver module is provided.

[0004] A novel multi-channel analog optical transceiver module, comprising:

[0005] a first shell and a second shell;

[0006] A circuit board assembly is arranged between the first shell and the second shell, the circuit board assembly includes electronic devices and optical devices, and the second shell is provided with a radio frequency power multiplexing interface.

[0007] In one embodiment, the second shell is further provided with a first mounting hole, and the RF power multiplexing interface is mounted and adapted with the application interface through the first mounting hole.

[0008] In one embodiment, the first shell and the second shell are respectively provided with an isolation cavity, and when the first shell and the second shell are relatively buckled on two sides of the circuit board assembly, the isolation cavities of the first shell and the second shell respectively accommodate the electronic device and the optical device, and isolate the electronic device from the optical device.

[0009] In one embodiment, a shielding ring is further included, which is arranged on the first shell or the second shell and is used to shield the light path between the optical components.

[0010] In one embodiment, when the first shell and the second shell are relatively buckled together, an optical interface is formed at the contacting portion of the first shell and the second shell, and the optical interface is adapted to the LC connector.

[0011] In one embodiment, the first shell and the second shell are provided with corresponding positioning grooves for positioning the optical interface when the first shell and the second shell are relatively buckled.

[0012] In one embodiment, an optical device is further included, and two bosses are arranged on opposite side walls of the optical device. When the optical device is installed between the first shell and the second shell, the two bosses are respectively embedded in the positioning groove of the first shell and the positioning groove of the second shell.

[0013] In one embodiment, the first housing is provided with a fixing structure for preventing the LC connector inserted into the optical interface from falling off.

[0014] In one embodiment, the LC connector is further included, and an elastic buckle is provided at one end of the LC connector inserted into the optical interface. The fixing structure includes a square hole structure located at the optical interface and arranged on the first shell. When the LC connector is inserted into the optical interface, the elastic buckle is embedded in the square hole structure.

[0015] In one embodiment, the second housing is further provided with a second mounting hole, and the novel multi-channel analog optical transceiver module is connected to the system through the second mounting hole;

[0016] The first shell and the second shell are respectively provided with fixing holes, and the novel multi-channel analog optical transceiver module further comprises fixing screws, and the first shell and the second shell are connected by the fixing screws passing through the fixing holes;

[0017] A thermal pad is arranged between the first housing and the circuit board assembly, and between the circuit board assembly and the second housing.

[0018] An embodiment of the present application provides a new type of multi-channel analog optical transceiver module. The new type of multi-channel analog optical transceiver module includes a first shell, a second shell and a circuit board assembly. The circuit board assembly is arranged between the first shell and the second shell. The circuit board assembly includes electronic devices and optical devices. The second shell is provided with a radio frequency power multiplexing interface. The radio frequency interface and the power interface are integrated into a standard radio frequency power multiplexing interface and installed up and down, so that the appearance structure of the new type of multi-channel analog optical transceiver module is simpler, the volume is reduced, and the integration is improved. The radio frequency power multiplexing interface will not accumulate dust, and improves the plug-in performance, reduces the frequency of plug-in operations in actual applications, and can increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A novel multi-channel analog optical transceiver module provided in one embodiment of the present application;

[0020] Figure 2 An exploded diagram of a novel multi-channel analog optical transceiver module provided in one embodiment of the present application;

[0021] Figure 3A bottom view of a novel multi-channel analog optical transceiver module provided by one embodiment of the present application;

[0022] Figure 4 A schematic diagram of a first housing of a novel multi-channel analog optical transceiver module provided by an embodiment of the present application;

[0023] Figure 5 A cross-sectional view of a novel multi-channel analog optical transceiver module provided in one embodiment of the present application;

[0024] Description of reference numerals:

[0025] First housing 1

[0026] Second housing 4

[0027] Circuit board assembly 3

[0028] Shielding ring 9

[0029] Optical interface 5

[0030] Positioning slot 10

[0031] Fixed structure 11

[0032] RF power multiplexing interface 6

[0033] First mounting hole 8

[0034] Second mounting hole 7

[0035] Fixing screw 2

[0036] LC connector 12

[0037] Optical device 13. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] See also Figure 1-3 , an embodiment of the present application provides a new multi-channel analog optical transceiver module. The new multi-channel analog optical transceiver module includes a first shell 1, a second shell 4 and a circuit board assembly 3. The circuit board assembly 3 is arranged between the first shell 1 and the second shell 4. The circuit board assembly 3 includes electronic devices and optical devices. The second shell 4 is provided with a radio frequency power multiplexing interface. In one embodiment, the radio frequency power multiplexing interface can be a board-to-board connector. The board-to-board connector can be a standard Samtec board-to-board connector.

[0044] See also Figure 3, the second shell 4 is provided with a radio frequency power multiplexing interface 6. The radio frequency power multiplexing interface 6 can be arranged on the side of the second shell 4 away from the first shell 1. That is, the radio frequency power multiplexing interface 6 is arranged at the bottom of the new multi-channel analog optical transceiver module. The radio frequency interface and the power interface are integrated in a standard radio frequency power multiplexing interface 6, and installed up and down, that is, the standard radio frequency power multiplexing interface 6 is a male and female connector plug-in structure, which has the advantage of saving space. In addition, the radio frequency interface and the power interface are integrated in a standard radio frequency power multiplexing interface 6, so that the appearance structure of the new multi-channel analog optical transceiver module is simpler and the integration is improved.

[0045] The appearance structure of the novel multi-channel analog optical transceiver module is made simpler and the integration is improved. The plug-in performance is improved, the plug-in operation frequency in practical applications is reduced, and the service life can be increased. Furthermore, in the male and female connector plug-in structure, the male connector is arranged at the bottom of the novel multi-channel analog optical transceiver module and is wrapped by the second shell 4. After plugging, the male and female connectors are wrapped by the second shell 4 and will not be exposed to the environment. Therefore, the RF power multiplexing interface 6 is not easy to accumulate dust.

[0046] In one embodiment, the second shell 4 is also provided with a first mounting hole 8. The RF power multiplexing interface 6 is installed and adapted with the application interface through the first mounting hole 8. There may be two first mounting holes 8, which are correspondingly arranged on the side of the second shell 4 away from the first shell 1. The first mounting hole 8 may be a pin hole. When the new multi-channel analog optical transceiver module is connected to the application interface, the first mounting hole 8 can be used as a docking standard, so that the purpose of quickly docking the new multi-channel analog optical transceiver module with the application interface can be achieved. The application interface may be an application module with a female head of an RF power multiplexing connector connected to the new multi-channel analog optical transceiver module. The application module is correspondingly provided with a pin opening. The first mounting hole 8 and the corresponding pin opening of the application module may be a pin connection structure, which can play a guiding role and is conducive to connector plugging.

[0047] In one embodiment, the first housing 1 and the second housing 4 are respectively provided with an isolation cavity. When the first housing 1 and the second housing 4 are relatively buckled on two sides of the circuit board assembly 3, the isolation cavities of the first housing 1 and the second housing 4 respectively accommodate the electronic device and the optical device, and isolate the electronic device from the optical device.

[0048] The first shell 1 and the second shell 4 can be arranged correspondingly. The first shell 1 and the second shell 4 can form the novel multi-channel analog optical transceiver module by sandwiching the circuit board assembly 3 in the middle. The circuit board assembly 3 can include a circuit board, and the electronic device and the optical device can be integrated in the circuit board respectively. The circuit board assembly 3 can realize the conversion function between optical signals and electrical signals. The electronic device and the optical device can be welded on the circuit board. When the first shell 1 and the second shell 4 are engaged with each other, the isolation cavity of the first shell 1 and the isolation cavity of the second shell 4 respectively form a accommodating cavity with the circuit board. The electronic device and the optical device can be respectively located in the accommodating cavity, that is, accommodated in the isolation cavity. It can be understood that the material forming the isolation cavity can be a material with electromagnetic shielding effect. Through the isolation cavity, the electronic device and the optical device can be isolated to avoid mutual influence between the electronic device and the optical device, so as to improve the working performance of the novel multi-channel analog optical transceiver module.

[0049] See also Figure 4 In one embodiment, the circuit board can be fixed between the first shell 1 and the second shell 4 by a fixing structure such as screws, and together with the first shell 1, it can form a sealed isolation cavity, which can shield the interference of radio frequency signals in various optical paths.

[0050] Please see again Figure 2 The electronic components on the lower surface of the circuit board (PCB) can be wrapped in a large cavity of the base (second housing 4). Screws are screwed on the circuit board to make the lower surface of the circuit board close to the base, and sealant is applied. The upper surface of the circuit board has two receiving and two transmitting 4 radio frequency channels, corresponding to the 4 optical paths of the optical components.

[0051] See also Figure 4 and Figure 5 , the cover plate (first housing 1) has four cavities at corresponding positions, namely, four heterogeneous cavities, which together with the end faces of the optical device and the shielding ring 9 form four opposing shielding cavities, thus preventing interference between signals of various channels. Sealant is applied to the contact position between the cover plate and the upper surface of the PCB.

[0052] In one embodiment, the novel multi-channel analog optical transceiver module further includes a shielding ring 9. The shielding ring 9 is made of a glassy silver conductive material, has silicone elasticity, can tightly fill the gap between the first shell 1 and the second shell 4 and the optical device, form a good conductive whole, and play a role in shielding signal interference. The shielding ring 9 is arranged on the first shell 1 or the second shell 4. The shielding ring 9 is used to shield the radio frequency channel between the optical devices. The multi-channel optical device is composed of multiple receiving and transmitting channels, which are converted into various radio frequency signal channels by transmitting and receiving analog light. The shielding ring 9 is sleeved on the outer shell of each optical device channel to fill the gap between the first shell 1 and the second shell 4 and the optical device, and plays a role in shielding the interference and crosstalk of the radio frequency signals of each channel of the optical device. There is a PCB board between the base and the cover plate, which is clamped in the middle by applying sealant and then locking with screws. The radio frequency circuits on the PCB board are separated into independent spaces by the cavity hollowed out by the inner wall of the cover plate to prevent signal interference and crosstalk.

[0053] In one embodiment, when the first shell 1 and the second shell 4 are relatively buckled, an optical interface 5 is formed at the contact portion of the first shell 1 and the second shell 4, and the optical interface 5 is adapted to the LC connector. It can be understood that the opening edge of the first shell 1 can have a part of the structure of the optical interface 5, and the opening edge of the second shell 4 can have a part of the structure of the optical interface 5. The opening of the first shell 1 and the opening edge of the second shell 4 are spliced ​​to form the optical interface 5. The optical interface 5 can be inserted into the LC connector. The optical interface 5 is directly machined and formed on the first shell 1 and the second shell 4, which can greatly reduce the size of the new multi-channel analog optical transceiver module itself and save costs. By changing the optical interface 5 with pigtails and LC connectors to the optical interface 5 that can be adapted to the standard LC connector, no intermediate adapter flange is required during application, the intermediate adapter device is reduced, the fiber coil position does not need to be reserved, and the cumbersome process of assembling multiple parts is reduced, which saves more application space, makes the application more compact, and has diversified installation.

[0054] In one embodiment, the first housing 1 and the second housing 4 are provided with corresponding positioning grooves 10. The positioning grooves 10 are used to position the optical interface 5 when the first housing 1 and the second housing 4 are relatively buckled. When the first housing 1 and the second housing 4 are relatively buckled, the positioning grooves 10 of the first housing 1 and the second housing 4 can be used as a reference for alignment to ensure that the optical interface 5 formed by the first housing 1 and the second housing 4 meets the standard of being able to be plugged and unplugged with the LC connector.

[0055] See also Figure 5In one embodiment, an optical device 13 may be further included. Two bosses may be provided on the opposite side walls of the optical device 13, and the first housing 1 and the second housing 4 may each be provided with a positioning groove 10. When the optical device 13 is installed between the first housing 1 and the second housing 4, the two bosses may enter the positioning groove 10 of the first housing and the positioning groove 10 of the second housing 4, respectively, so that the spatial position of the optical port of the optical device 13 can be ensured.

[0056] In one embodiment, the first housing 1 is provided with a fixing structure 11. The fixing structure 11 is used to prevent the LC connector 12 inserted into the optical interface 5 from falling off. The fixing structure 11 may be two square hole structures.

[0057] In one embodiment, the LC connector 12 may also be included. An elastic buckle is provided at one end of the LC connector 12 inserted into the optical interface 5, and the fixing structure 11 includes a square hole structure provided on the first housing 1 and located at the optical interface 5. When the LC connector 12 is inserted into the optical interface 5, the elastic buckle is embedded in the square hole structure to prevent the LC connector 12 from falling off.

[0058] In one embodiment, the second housing 4 is further provided with a second mounting hole 7. The novel multi-channel analog optical transceiver module is connected to the system through the second mounting hole 7. The second mounting holes 7 may be eight, evenly arranged at four corners of the second housing 4. The second mounting holes 7 may be threaded holes. The novel multi-channel analog optical transceiver module may be connected to the system by the cooperation of screws and the threaded holes.

[0059] In one embodiment, a thermal pad is provided between the first housing 1 and the circuit board assembly 3, and between the circuit board assembly 3 and the second housing 4. The thermal pads are provided on both sides of the circuit board assembly 3, so that heat can be discharged in time to ensure the normal operation of the novel multi-channel analog optical transceiver module. In one embodiment, the thermal pad can be a thermally conductive silicone pad.

[0060] In one embodiment, the first shell 1 and the second shell 4 are respectively provided with fixing holes. The novel multi-channel analog optical transceiver module also includes a fixing screw 2. The first shell 1 and the second shell 4 are connected by the fixing screw 2 passing through the fixing hole. The first shell 1 can be a rectangular structure. The four corners of the rectangular structure can form a step structure, and each of the step structures can be provided with a fixing hole. An opening can also be provided at a position of the second shell 4 corresponding to the fixing hole. The first shell 1 and the second shell 4 can be connected by passing the fixing screw 2 through the fixing hole and the second through hole. Therefore, the connection between the first shell 1, the circuit board assembly 3 and the second shell 4 is tighter, and the vibration resistance is improved.

[0061] The novel multi-channel analog optical transceiver module eliminates the need for a long pigtail with an optical connector by providing the optical interface 5, and is flexible to install and use. The novel multi-channel analog optical transceiver module integrates the pluggable RF power multiplexing interface 6 and the pluggable standard LC optical connector optical interface 5, has a high degree of integration, and is convenient for packaging, transportation, and system use. The structure formed by the first housing 1, the second housing 4, and the circuit board assembly 3 has dustproof capability, and greatly improved anti-vibration performance, and can be used in motion systems and harsh environments.

[0062] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present application, and these improvements should also be regarded as the scope of protection of the present application.

Claims

1. A multi-channel analog optical transceiver module, characterized in that: include: a first shell and a second shell; A circuit board assembly is arranged between the first shell and the second shell, the circuit board assembly includes electronic devices and optical devices, and the second shell is provided with a radio frequency power multiplexing interface; The second housing is also provided with a first mounting hole, and the RF power multiplexing interface is installed and adapted with the application interface through the first mounting hole; The first shell and the second shell are respectively provided with an isolation cavity. When the first shell and the second shell are relatively buckled on two sides of the circuit board assembly, the isolation cavities of the first shell and the second shell respectively accommodate the electronic device and the optical device and isolate the electronic device from the optical device; The isolation cavity is made of a conductive material, and the multi-channel analog optical transceiver module further includes a shielding ring; the shielding ring is made of a glassy silver conductive material, filling the gap between the first shell, the second shell and the optical device to form a good conductive whole, and plays a role in shielding signal interference; The RF power multiplexing interface is a male and female connector structure that is plugged in up and down, wherein the male connector is completely wrapped by the second shell, and after plugging in, the male and female connectors are wrapped by the second shell.

2. The multi-channel analog optical transceiver module according to claim 1, characterized in that: It also includes a shielding ring, which is arranged on the first shell or the second shell and is used to shield the light path between the optical devices.

3. The multi-channel analog optical transceiver module according to claim 1, characterized in that: When the first shell and the second shell are relatively buckled together, an optical interface is formed at the contacting portion of the first shell and the second shell, and the optical interface is adapted to the LC connector.

4. The multi-channel analog optical transceiver module according to claim 3, characterized in that: The first shell and the second shell are provided with corresponding positioning grooves for positioning the optical interface when the first shell and the second shell are relatively buckled.

5. The multi-channel analog optical transceiver module according to claim 4, characterized in that: It also includes an optical device, and two bosses are arranged on opposite side walls of the optical device. When the optical device is installed between the first shell and the second shell, the two bosses are respectively embedded in the positioning groove of the first shell and the positioning groove of the second shell.

6. The multi-channel analog optical transceiver module according to claim 3, characterized in that: The first housing is provided with a fixing structure for preventing the LC connector inserted into the optical interface from falling off.

7. The multi-channel analog optical transceiver module according to claim 6, characterized in that: It also includes the LC connector, and an elastic buckle is provided at one end of the LC connector inserted into the optical interface. The fixing structure includes a square hole structure located at the optical interface and arranged on the first shell. When the LC connector is inserted into the optical interface, the elastic buckle is embedded in the square hole structure.

8. The multi-channel analog optical transceiver module according to claim 1, characterized in that: The second housing is further provided with a second mounting hole, and the multi-channel analog optical transceiver module is connected to the system through the second mounting hole; The first shell and the second shell are respectively provided with fixing holes, the multi-channel analog optical transceiver module further comprises fixing screws, and the first shell and the second shell are connected by the fixing screws passing through the fixing holes; A thermal pad is arranged between the first housing and the circuit board assembly, and between the circuit board assembly and the second housing.

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