Optical transceiver with strong anti-interference performance

Abstract

The utility model belongs to the technical field of optical transceivers, and particularly discloses an optical transceiver with strong anti-interference performance, which comprises a bottom shell, a top cover and an optical transceiver circuit assembly, the bottom shell and the top cover are made of metal materials, the bottom shell is hollow, the upper part of the bottom shell is open, the top cover covers the upper opening of the bottom shell, and the optical transceiver circuit assembly is arranged on the top cover. The optical transceiver circuit assembly is located in the bottom shell, and the lower surface of the top cover is provided with a secondary anti-interference isolation cover. The front wall of the bottom shell is provided with an optical transceiver interface, and the optical transceiver interface is electrically connected with the optical transceiver circuit assembly. Through the arrangement of the secondary anti-interference isolation cover, when installation is carried out from top to bottom, the secondary anti-interference isolation cover further covers and isolates a corresponding chip (such as a laser driver and a signal amplification chip) needing anti-interference, and a heat dissipation notch is arranged, so that ventilation, heat dissipation and normal work are ensured.

Description

Technical Field

[0001] This utility model relates to the field of optical transceiver technology, specifically to an optical transceiver with strong anti-interference capabilities. Background Technology

[0002] An optical transceiver is a terminal device for optical signal transmission.

[0003] The anti-interference capability of optical transceivers directly affects the stability and reliability of signal transmission. Optical transceivers mainly face two types of interference: external interference: electromagnetic interference, radio frequency interference, ground loop interference, and mechanical interference; internal interference: signal crosstalk and power supply noise.

[0004] For handling interference, the following methods are included:

[0005] Optical path anti-interference design:

[0006] Prioritize the use of single-mode fiber (which offers superior interference resistance compared to multimode fiber) to reduce signal attenuation and dispersion during long-distance transmission. Keep fiber optic cabling away from strong electromagnetic sources (such as high-voltage cables), and use metal-armored fiber or non-metallic reinforced fiber to avoid external mechanical damage and electromagnetic coupling. Fiber optic connectors (such as FC and SC interfaces) must be tightly connected, and the end faces should be cleaned regularly to prevent dust from increasing optical attenuation. Use optical isolators: these transmit optical signals unidirectionally and prevent interference and signal distortion caused by reflected light (such as reflections from the fiber end face). Employ wavelength division multiplexing (WDM) technology: this transmits optical signals of different wavelengths within the same fiber, reducing crosstalk between multiple channels.

[0007] Circuit anti-interference design:

[0008] The casing is made entirely of metal (such as aluminum alloy or stainless steel), forming a Faraday cage structure to block external electromagnetic radiation. The internal circuit board (PCB) layout separates digital and analog circuits to reduce mutual interference; critical chips are reinforced with metal shielding. The equipment casing requires single-point grounding with a grounding resistance of <4Ω to avoid ground loop interference; for long-distance transmission, the two ends of the equipment can be disconnected via isolation transformers or optocouplers. Lightning protection modules (such as TVS diodes or gas discharge tubes) are installed at the power input and signal interfaces to prevent damage from induced lightning or surge voltages.

[0009] Power supply filtering and isolation:

[0010] A combination of switching power supply and EMI filter is used to suppress common-mode and differential-mode noise at the power input. Critical circuits (such as laser driver) use independent power supply modules to avoid power supply crosstalk. Signal interfaces (such as HDMI and SDI) use transformer isolation or optocoupler isolation to cut off the electrical connection between external devices and internal circuits and prevent ground potential difference interference.

[0011] The aforementioned casing uses an all-metal design, which requires consideration of heat dissipation. Therefore, the casing usually has ventilation holes and other structures, which reduces the shielding effect. Utility Model Content

[0012] The purpose of this invention is to provide an optical transceiver with strong anti-interference capabilities to solve the problems mentioned in the background art.

[0013] To achieve the above objectives, this utility model provides the following technical solution: an optical transceiver with strong anti-interference capabilities, comprising:

[0014] Bottom shell, top cover, and optical transceiver circuit assembly;

[0015] The bottom shell and top cover are both made of metal. The bottom shell is hollow and open at the top. The top cover covers the upper opening of the bottom shell. The optical transceiver circuit assembly is located inside the bottom shell. A secondary anti-interference isolation cover is provided on the lower surface of the top cover.

[0016] The front wall of the bottom shell is provided with an optical transceiver interface, which is electrically connected to the optical transceiver circuit assembly.

[0017] Preferably, the bottom shell and top cover are made of stainless steel or aluminum alloy.

[0018] Preferably, the secondary anti-interference isolation cover is made of metal, and a heat dissipation slot is provided on the lower side of the secondary anti-interference isolation cover.

[0019] Preferably, the lower surface of the top cover is provided with an insertion block on each of the two side walls, and the insertion block is inserted into the inner side of the upper opening of the bottom shell.

[0020] Preferably, a support column is provided at the bottom of the inner cavity of the bottom shell. The support column is hollow and tubular. An upper pressure column corresponding to the position of the support column is provided on the lower surface of the top cover. A plug-in column that cooperates with the support column is provided at the bottom end of the upper pressure column. The outer diameter of the plug-in column is smaller than the outer diameter of the support column and the upper pressure column. A through hole that cooperates with the plug-in column is provided on the optical transceiver circuit assembly.

[0021] Preferably, the bottom shell has heat dissipation vents on both opposite sides.

[0022] Preferably, the outer surface of the bottom shell is connected to a grounding clamp via a wire.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] By setting up a secondary anti-interference isolation cover, when installed from top to bottom, the secondary anti-interference isolation cover further covers and isolates the corresponding chips that need anti-interference (such as laser drivers and signal amplification chips), and heat dissipation slots are set to ensure ventilation, heat dissipation and normal operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the separate structure of the bottom shell, top cover, and secondary anti-interference isolation cover of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the lower surface of the top cover of this utility model.

[0028] In the diagram: 1. Bottom shell; 2. Top cover; 3. Heat dissipation vent; 4. Wire; 5. Grounding clamp; 6. Optical transceiver interface; 7. Optical transceiver circuit assembly; 8. Through hole; 9. Support column; 10. Upper pressure column; 11. Insertion block; 12. Secondary anti-interference isolation cover. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Example 1: Please refer to Figure 1-3 This utility model provides a technical solution: an optical transceiver with strong anti-interference capabilities, comprising: a bottom shell 1, a top cover 2, and an optical transceiver circuit assembly 7;

[0032] The bottom shell 1 and the top cover 2 are both made of metal. The bottom shell 1 is hollow and open at the top. The top cover 2 covers the upper opening of the bottom shell 1. The optical transceiver circuit assembly 7 is located inside the bottom shell 1. A secondary anti-interference isolation cover 12 is provided on the lower surface of the top cover 2. An optical transceiver interface 6 is provided on the front wall of the bottom shell 1. The optical transceiver interface 6 is electrically connected to the optical transceiver circuit assembly 7.

[0033] Analysis of the above content: In this solution, the structure and electrical connection of the optical transceiver interface 6 and the optical transceiver circuit assembly 7 adopt existing technologies and are specifically set according to the actual needs of use. There are no changes here (if the layout and corresponding shape are changed, the connection position of this solution will be adapted to change).

[0034] During installation, the optical transceiver circuit assembly 7 is placed inside the bottom shell 1. Then, the optical transceiver interface 6 is electrically connected to the optical transceiver circuit assembly 7. The top cover 2 covers the upper opening of the bottom shell 1 and is connected by screws.

[0035] The secondary anti-interference isolation cover 12 further covers and isolates the devices that need to be isolated from the inside, based on the isolation of the bottom shell 1 and the top cover 2 (the setting of the secondary anti-interference isolation cover 12 is specifically set according to the location of the electrical devices that need to be isolated in the optical transceiver circuit assembly 7).

[0036] Example 2: Please refer to Figure 1-3 This utility model provides a technical solution: the bottom shell 1 and the top cover 2 are made of stainless steel or aluminum alloy.

[0037] Analysis of the above content: The stainless steel or aluminum alloy material makes the bottom shell 1 and the top cover 2 form a Faraday cage structure, which blocks external electromagnetic radiation.

[0038] Example 3: Please refer to Figure 1-3 The present invention provides a technical solution: the secondary anti-interference isolation cover 12 is made of metal, and a heat dissipation slot is provided on the lower side of the secondary anti-interference isolation cover 12.

[0039] Analysis of the above content: The setting of the heat dissipation slot is to dissipate heat from the electrical components covered by the secondary anti-interference isolation cover 12.

[0040] Example 4: Please refer to Figure 1-3 The present invention provides a technical solution: the lower surface of the top cover 2 is provided with an insertion block 11 on each of the two side walls, and the insertion block 11 is inserted into the inner side of the upper opening of the bottom shell 1.

[0041] Analysis of the above content: By setting the insertion block 11, it can be inserted from both sides of the upper opening of the bottom shell 1, and supported from both sides, so that the connection between the top cover 2 and the bottom shell 1 is stable.

[0042] Example 5: Please refer to Figure 1-3 This utility model provides a technical solution: a support column 9 is provided at the bottom of the inner cavity of the bottom shell 1. The support column 9 is hollow tubular. An upper pressure column 10 corresponding to the position of the support column 9 is provided on the lower surface of the top cover 2. A plug-in column that cooperates with the support column 9 is provided at the bottom end of the upper pressure column 10. The outer diameter of the plug-in column is smaller than the outer diameter of the support column 9 and the upper pressure column 10. A through hole 8 that cooperates with the plug-in column is provided on the optical transceiver circuit assembly 7.

[0043] Analysis of the above content: such as Figure 2 , 3 As shown, the optical transceiver circuit assembly 7 is pre-supported on the support column 9. Then, when the top cover 2 is placed on the upper opening of the bottom shell 1, the upper pressure column 10 on the lower side of the top cover 2 descends at the same time. The upper pressure column 10 is inserted into the upper inner cavity of the support column 9 through the plug-in column. The support column 9 and the upper pressure column 10 clamp the optical transceiver circuit assembly 7 from the upper and lower sides.

[0044] Example 6: Please refer to Figure 1-3 This utility model provides a technical solution: heat dissipation vents 3 are provided on both opposite sides of the bottom shell 1. A grounding clamp 5 is connected to the outer surface of the bottom shell 1 via a wire 4.

[0045] Analysis of the above content: The heat dissipation vent 3 is set to ventilate the inside of the bottom shell 1 and play a role in heat dissipation. The grounding clamp 5 is set to ground and directly clamps and connects to the ground object. One of the clamping arms of the grounding clamp 5 is connected to the insertion rod, which can also be directly inserted into the ground.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A strong anti-interference optical transceiver, characterized in that, The utility model relates to an optical transceiver, including: bottom shell (1), top cover (2) and optical transceiver circuit assembly (7); Wherein, bottom shell (1), top cover (2) are metal material, bottom shell (1) is hollow and upper portion opening shape, top cover (2) covers at the upper portion opening of bottom shell (1), optical transceiver circuit assembly (7) is located inside bottom shell (1), the lower surface of top cover (2) is provided with secondary anti-interference isolation cover (12); The front wall of bottom shell (1) is provided with optical transceiver interface (6), and the optical transceiver interface (6) is electrically connected with optical transceiver circuit assembly (7).

2. The optical transceiver with strong anti-interference capability according to claim 1, characterized in that: Bottom shell (1), top cover (2) are stainless steel or aluminum alloy material.

3. The optical transceiver with strong anti-interference capability according to claim 1, characterized in that: Secondary anti-interference isolation cover (12) is metal material, and the lower part of the side of secondary anti-interference isolation cover (12) is provided with a heat dissipation slot.

4. The optical transceiver with strong anti-interference capability according to claim 1, characterized in that: The lower surface of top cover (2) is provided with insertion block (11) on opposite sides, and insertion block (11) is inserted into the inside of the upper opening of bottom shell (1).

5. The optical transceiver with strong anti-interference capability according to claim 1, characterized in that: The bottom of the inner cavity of bottom shell (1) is provided with support column (9), and support column (9) is hollow tubular, the lower surface of top cover (2) is provided with upper pressing column (10) corresponding to the position of support column (9), the bottom end of upper pressing column (10) is provided with plug-in column matched with support column (9), the outer wall diameter of plug-in column is less than the outer wall diameter of support column (9) and upper pressing column (10), and optical transceiver circuit assembly (7) is provided with through hole (8) matched with plug-in column.

6. The optical transceiver with strong anti-interference capability according to claim 1, characterized in that: The opposite sides of bottom shell (1) are provided with heat dissipation port (3).

7. The optical transceiver with strong anti-interference capability according to claim 1, characterized in that: The outer surface of bottom shell (1) is connected with grounding clamp (5) through wire (4).

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