CN210840458U

CN210840458U - High-sensitivity coherent detection receiving device

Info

Publication number: CN210840458U
Application number: CN201921129663.8U
Authority: CN
Inventors: 刘强
Original assignee: Sichuan Xiwu Laser Technology Co ltd
Current assignee: Sichuan Xiwu Laser Technology Co ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-06-23
Anticipated expiration: 2029-07-18

Abstract

The utility model belongs to the technical field of coherent detection, especially, be a high sensitive coherent detection receiving arrangement, including protective housing, protective housing's top fixedly connected with fixed mounting panel, protective housing's inside is seted up flutedly, and the inside joint of recess has the heat dissipation copper sheet, and the front of heat dissipation copper sheet is provided with the component connecting plate, and the positive fixedly connected with receiving element of component connecting plate, the ventilation hole has all been seted up to the both sides of recess inner wall, and the quantity in ventilation hole is a plurality of, and a plurality of ventilation hole sets up the both sides at the heat dissipation copper sheet with rectangular array's form. This high sensitive coherent detection receiving arrangement, through the setting of ventilation hole, heat dissipation copper sheet and receiving element, the heat that the internal element heat dissipation goes out can be absorbed by the heat dissipation copper sheet, and self temperature can improve after the heat is absorbed to the heat dissipation copper sheet, and outside flowing gas can cool down the heat dissipation copper sheet through the ventilation hole entering device after in to the radiating effect of device has been improved.

Description

High-sensitivity coherent detection receiving device

Technical Field

The utility model belongs to the technical field of belong to coherent detection, concretely relates to high sensitive coherent detection receiving arrangement.

Background

Coherent detection, coherent laser signals and local laser oscillation signals are incident on the photosensitive surface of the detector together under the condition of meeting wave front matching to generate beat frequency or coherent superposition, and the size of the electric signals output by the detector is in direct proportion to the detection mode of the square of the sum of the laser signal waves to be detected and the local laser oscillation waves.

Most of the existing optical fiber communication systems adopt an incoherent intensity modulation-direct detection (IM/DD) mode, which is a mode of directly modulating the intensity of an optical carrier by using electronic data pulses, and at a receiving end, an optical signal is directly detected by a photosensitive diode so as to recover an initial data signal, and a coherent detection system, which uses the frequency or phase of the optical carrier to send information, and at the receiving end, uses a heterodyne detection technology to recover an original digital signal, and the coherent detection can improve the sensitivity of a receiver, and can improve 20dB compared with a 1M/DD system, so that at the same transmitter power, the transmission distance is allowed to increase by 100km, and in addition, the coherent detection can also effectively utilize an optical fiber broadband, and the wavelength spacing of each carrier of Wavelength Division Multiplexing (WDM) can be reduced.

However, the conventional high-sensitivity coherent detection receiving device has poor heat dissipation effect, so that the receiving element in the receiver is easily damaged, and the service life of the device is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high sensitive coherent detection receiving arrangement has the characteristics that the radiating efficiency is high and water-proof effects is good.

The utility model discloses a realize like this, a high sensitive coherent detection receiving arrangement, including protective housing, protective housing's top fixedly connected with fixed mounting panel, protective housing's inside is seted up flutedly, the inside joint of recess has the heat dissipation copper sheet, the front of heat dissipation copper sheet is provided with the component connecting plate, the positive fixedly connected with receiving element of component connecting plate, the ventilation hole has all been seted up to the both sides of recess inner wall, the quantity in ventilation hole is a plurality of, and a plurality of the ventilation hole sets up the both sides at the heat dissipation copper sheet with rectangular array's form.

In order to make things convenient for the staff to take out the heat dissipation copper sheet from the draw-in groove, as the utility model relates to a high sensitive coherent detection receiving arrangement is preferred, the bar groove has all been seted up to the both sides of heat dissipation copper sheet, be provided with the clearance between heat dissipation copper sheet and the recess, the inside in clearance is provided with the isolation layer.

In order to make the device can fix on other objects, conduct the utility model relates to a high sensitive coherent detection receiving arrangement is preferred, the hole has all been seted up to the four corners department of fixed mounting panel.

In order to make the heat dissipation copper sheet can fix, conduct the utility model relates to a high sensitive coherent detection receiving arrangement is preferred, the four corners department of heat dissipation copper sheet all sets up threaded hole.

In order to make the component connecting plate can fix, conduct the utility model relates to a high sensitive coherent detection receiving arrangement is preferred, the four corners department of component connecting plate has all pegged graft fastening bolt, fastening bolt's one end run through the inside of component connecting plate and with heat dissipation copper sheet threaded connection.

In order to facilitate the staff to operate, as the utility model relates to a high sensitive coherent detection receiving arrangement is preferred, protection casing's positive fixedly connected with port arranges the board.

In order to avoid the connecting wires from being entangled, the high-sensitivity coherent detection receiving device of the present invention is preferable in that the port row plate is inserted with a connecting port inside, and the connecting port penetrates through the port row plate and is movably connected with the receiving element.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the setting of ventilation hole, heat dissipation copper sheet and receiving element, when using the device, the heat that the heat dissipation of internal element goes out can be absorbed by the heat dissipation copper sheet, and self temperature can improve after the heat is absorbed to the heat dissipation copper sheet, and outside flowing gas can cool down the heat dissipation copper sheet through the ventilation hole entering device after in to the radiating effect of the device has been improved.

2. Through the setting of firm mounting panel, isolation layer, heat dissipation copper sheet and ventilation hole, firm mounting panel can prevent in the outside a large amount of rainwater admission gear, when outside rainwater passes through inside the ventilation hole admission gear, the heat dissipation copper sheet can be kept apart it with the isolation layer to improve the device's water-proof effects, avoided the rainwater to soak internal component, lead to its to break down.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the heat dissipation copper sheet of the present invention;

FIG. 4 is a schematic side view of the cross-sectional structure of the present invention;

in the figure: 1. a protective housing; 2. fixing the mounting plate; 3. a groove; 4. a heat dissipation copper sheet; 5. an element connecting plate; 6. a receiving element; 7. a vent hole; 8. a strip-shaped groove; 9. a threaded hole; 10. a hole; 11. fastening a bolt; 12. a port plate; 13. a connection port; 14. an isolation layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-4, the present invention provides a technical solution: referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a high sensitive coherent detection receiving arrangement, including protective housing 1, protective housing 1's top fixedly connected with fixed mounting panel 2, protective housing 1's inside is seted up flutedly 3, the inside joint of recess 3 has heat dissipation copper sheet 4, the front of heat dissipation copper sheet 4 is provided with component connecting plate 5, the positive fixedly connected with receiving element 6 of component connecting plate 5, ventilation hole 7 has all been seted up to the both sides of recess 3 inner wall, the quantity in ventilation hole 7 is a plurality of, and a plurality of ventilation hole 7 sets up the both sides at heat dissipation copper sheet 4 with rectangular array's form.

In this embodiment: through setting up of ventilation hole 7, heat dissipation copper sheet 4 and receiving element 6, when using the device, the heat that the internal element heat dissipation goes out can be absorbed by heat dissipation copper sheet 4, and self temperature can improve after heat dissipation copper sheet 4 absorbs the heat, and outside flowing gas can cool down heat dissipation copper sheet 4 through ventilation hole 7 back in getting into the device to the radiating effect of the device has been improved.

Specifically, the strip-shaped grooves 8 are formed in the two sides of the heat dissipation copper sheet 4, a gap is formed between the heat dissipation copper sheet 4 and the groove 3, and the isolation layer 14 is arranged inside the gap.

In this embodiment: through the setting of bar groove 8, can be convenient for the staff take out it from recess 3 after dismantling heat dissipation copper sheet 4, isolation layer 14 plays the effect of keeping apart.

Specifically, holes 10 are formed at four corners of the fixed mounting plate 2.

In this embodiment: the staff inserts the screw rod that matches with hole 10 in hole 10 and then connects with other objects.

Specifically, threaded holes 9 are formed in four corners of the heat dissipation copper sheet 4.

In this embodiment: the heat-radiating copper sheet 4 can be fixed inside the device by screwing a screw into the threaded hole 9 and then connecting the screw with the protective shell 1.

Specifically, fastening bolts 11 are inserted into four corners of the element connecting plate 5, and one ends of the fastening bolts 11 penetrate through the inside of the element connecting plate 5 and are in threaded connection with the heat dissipation copper sheets 4.

In this embodiment: the element connecting plate 5 can be fixed on the radiating copper sheet 4 through the arrangement of the fastening bolt 11.

Specifically, the front surface of the protective casing 1 is fixedly connected with a port row plate 12.

In this embodiment: the port row plate 12 plays a role in protection, and avoids the phenomenon of electric shock when a worker is connected with the port 13 in a plugging mode.

Specifically, the port row plate 12 is inserted with a connection port 13, and the connection port 13 penetrates through the inside of the port row plate 12 and is movably connected with the receiving element 6.

In this embodiment: through the arrangement of the port row plate 12, the connection ports 13 on one side of the device can be distinguished conveniently by workers.

The utility model discloses a theory of operation and use flow: through setting up of ventilation hole 7, heat dissipation copper sheet 4 and receiving element 6, when using the device, the heat that the internal element heat dissipation goes out can be absorbed by heat dissipation copper sheet 4, and self temperature can improve after heat dissipation copper sheet 4 absorbs the heat, and outside flowing gas can cool down heat dissipation copper sheet 4 through ventilation hole 7 back in getting into the device to the radiating effect of the device has been improved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A high-sensitivity coherent detection receiving device comprises a protective shell, and is characterized in that: the top fixedly connected with fixed mounting panel of protective housing, the inside of protective housing has seted up flutedly, the inside joint of recess has the heat dissipation copper sheet, the front of heat dissipation copper sheet is provided with the component connecting plate, the positive fixedly connected with receiving element of component connecting plate, the ventilation hole has all been seted up to the both sides of recess inner wall, the quantity in ventilation hole is a plurality of, and a plurality of the ventilation hole sets up the both sides at the heat dissipation copper sheet with the form of rectangle array.

2. The high-sensitivity coherent detection receiving device of claim 1, wherein: the radiating copper sheet is characterized in that strip-shaped grooves are formed in two sides of the radiating copper sheet, a gap is formed between the radiating copper sheet and the groove, and an isolating layer is arranged inside the gap.

3. The high-sensitivity coherent detection receiving device of claim 1, wherein: the four corners of the fixed mounting plate are provided with holes.

4. The high-sensitivity coherent detection receiving device of claim 1, wherein: and threaded holes are formed in four corners of the radiating copper sheet.

5. The high-sensitivity coherent detection receiving device of claim 1, wherein: fastening bolts are inserted into four corners of the element connecting plate, and one ends of the fastening bolts penetrate through the inside of the element connecting plate and are in threaded connection with the radiating copper sheets.

6. The high-sensitivity coherent detection receiving device of claim 1, wherein: the front face of the protection shell is fixedly connected with a port row plate.

7. The high-sensitivity coherent detection receiving device of claim 6, wherein: the interior of the port row plate is inserted with a connecting port, and the connecting port penetrates through the interior of the port row plate and is movably connected with the receiving element.