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Fiber-optic via hole sealing device for refrigeration box, refrigeration box, and single-photon detection device

A sealing device and refrigeration box technology, applied in the field of single-photon detection, can solve the problems of cumbersome assembly, complex structure, unfavorable production, etc., and achieve the effects of convenient assembly, simple structure and favorable production.

Pending Publication Date: 2019-12-24
QUANTUMCTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing refrigeration box optical fiber through-hole sealing device, refrigeration box and single photon detection device are complex in structure, cumbersome in assembly, and unfavorable for production

Method used

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  • Fiber-optic via hole sealing device for refrigeration box, refrigeration box, and single-photon detection device
  • Fiber-optic via hole sealing device for refrigeration box, refrigeration box, and single-photon detection device
  • Fiber-optic via hole sealing device for refrigeration box, refrigeration box, and single-photon detection device

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Such as figure 1 , 2 As shown, a cooling box optical fiber through-hole sealing device includes a through hole 12 that is opened on the wall of the cooling box 10 and penetrates the box wall, and a plug that matches the through hole 12. The plug and The through hole 12 forms a detachable connection; the inner wall of the through hole 12 is provided with a groove 13, and the two ends of the groove 13 respectively penetrate to the inner and outer sides of the box wall, and the groove 13 constitutes the supply for the optical fiber 11 A via hole that passes through; one end of the optical fiber 11 is coupled inside the APD15 in the refrigeration box 10, and the other end is connected to the optical fiber jumper head outside the refrigeration box 10, and the aperture of the through hole 12 is set to at least provide The APD15 or fiber optic jumper head passes through. There are two strip grooves 13 arranged at intervals along the circumference of the through hole 12 or th...

Embodiment 2

[0029] Such as image 3 , 4 As shown, the difference between this embodiment and Embodiment 1 is that the plug includes an expansion sleeve 16 and a plunger 17, the expansion sleeve 16 is made of elastic material, and the plunger 17 and the expansion sleeve 16 are assembled In order to enable the expansion sleeve 16 to radially expand when the plunger 17 is inserted into the expansion sleeve 16; the expansion sleeve 16 and the through hole 12 are assembled so that the outer ring surface of the expansion sleeve 16 and the through hole The inner ring surface of the hole 12 forms an interference fit, and when the expansion sleeve 16 is in a non-expanded state, the outer ring surface of the expansion sleeve 16 forms a clearance fit with the inner ring surface of the through hole 12 . Preferably, the outer ring surface of the plunger 17 is provided with external threads, the outer diameter of the plunger 17 is greater than the inner diameter of the expansion sleeve 16, and the end...

Embodiment 3

[0031] Such as Figure 5 , 6 As shown, the difference between this embodiment and embodiment 2 is that the inner ring surface of the expansion sleeve 16 and the outer ring surface of the plunger 17 are conical. The outer end of the plunger 17 is provided with a gland 171 for pressing with an external force, and the inner side of the gland 171 is provided with a gap for inserting a crowbar to facilitate the disassembly of the plunger 17 . This embodiment directly adopts a push-type assembly structure, and the assembly and disassembly process is relatively simple. In addition, the bar groove 13 in this embodiment is opened on the expansion sleeve 16, and the inner end surface of the expansion sleeve 16 constitutes the limit portion, and the countertop 121 of the through hole 12 is provided with a gap for avoiding the optical fiber 11. .

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Abstract

The invention belongs to the technical field of single-photon detection, and in particular relates to a fiber-optic via hole sealing device for a refrigeration box, the refrigeration box, and a single-photon detection device. The fiber-optic via hole sealing device comprises a through hole defined on the box wall of the refrigeration box and running through the box wall, and a plug matched with the through hole, wherein the plug and the through hole form a detachable connection; the inner wall of the through hole and / or the outer wall of the plug is provided with strip grooves, both ends of the strip grooves respectively run through to inner and outer sides of the box wall, and the strip grooves form a via hole, through which the optical fiber can run through; one end of the optical fiberis coupled inside the APD in the refrigeration box, the other end is connected to the optical fiber jumper head outside the refrigeration box, and the hole diameter of the through hole is at least setfor the APD or the optical fiber jumper head to run through. In the invention, any number of via holes can be provided around the through hole according to actual needs, the entire device only needsone opening portion, and the reduction of the number of opening holes can indirectly improve the sealing and economic efficiency of the entire refrigeration box.

Description

technical field [0001] The invention belongs to the technical field of single-photon detection, and in particular relates to a cooling box optical fiber through-hole sealing device, a cooling box and a single-photon detection device. Background technique [0002] At present, the most important device in the field of single-photon detectors is the avalanche photodiode (APD), which is a photovoltaic detector element used in the field of light detection. The characteristics of high gain and fast response speed make it the preferred signal detection device in optical communication. The biggest advantage of avalanche photodiode (APD) is its amplification effect, and the photodetector made of it has high sensitivity, which is generally 10-20dB higher than that of PIN photodetector. The avalanche photodiode also has disadvantages: first, it will generate a new kind of noise - avalanche noise; second, the thermal movement in the APD is violent at room temperature, which will genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44G01J11/00
CPCG02B6/4444G02B6/4471G01J11/00G02B6/44775G02B6/4448
Inventor 胡浩郭俊徐炎
Owner QUANTUMCTEK