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A Method for Coupling Photonic Crystal Fiber Components

A photonic crystal fiber and component technology, applied in the coupling of optical waveguides, optical components, optics, etc., to achieve the effect of large output optical power and avoid siphon effect

Active Publication Date: 2021-02-09
BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem that the present invention solves is: in the method for connecting with photonic crystal fiber, provide a kind of new photonic crystal fiber coupling method, this method avoids blocking the air hole of photonic crystal fiber by controlling dispensing position and dispensing amount, Improving the connection accuracy of optical fiber optical path

Method used

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  • A Method for Coupling Photonic Crystal Fiber Components
  • A Method for Coupling Photonic Crystal Fiber Components
  • A Method for Coupling Photonic Crystal Fiber Components

Examples

Experimental program
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preparation example Construction

[0053] Further, the present invention proposes a method for preparing an input-end pigtail and an output-end pigtail, comprising the following steps:

[0054] S1. Etching a wafer V-shaped groove on the silicon wafer;

[0055] The wafer V-grooves etched on the silicon wafer in step S1 have a depth of 55um-65um, a width of 85um-95um, and a distance between adjacent wafer V-grooves of 25um-35um.

[0056] S2, cutting the silicon wafer with the V-shaped grooves of the wafer into multiple arrays;

[0057] When the silicon wafer is diced into an array, it is cut perpendicular to the direction of the V-shaped groove of the wafer, and the length of the V-shaped groove of the wafer in each cut array is the same, which is 2.2um to 2.2um.

[0058] S3. Grinding the array, grinding its end face into a bevel;

[0059] Specifically, the array is ground into a form with a length of 1.8 mm to 2 mm and an end face with an angle of 15°±0.5°. The purpose is to match the photonic crystal fiber w...

Embodiment

[0074] The preparation and performance test of the photonic crystal pigtail assembly were carried out by two fixation. First, fix the photonic crystal fiber on the V-groove of the fixture, rotate the photonic crystal fiber to a specific polarization-maintaining axis, and press the photonic crystal fiber with the gland to complete the first axis fixing; then put the photonic crystal fiber into the cutting knife First, cut out a 15° fiber tilt angle; finally put the photonic crystal fiber into the V-groove of the wafer, adjust the direction of the polarization-maintaining axis of the photonic crystal fiber and the length extending out of the V-groove of the wafer, and complete the second axis fixation.

[0075] Measure the fiber angle under a measuring microscope, the results are as follows:

[0076] Table 1. Ray Angle Measurement Table

[0077] serial number Fiber Angle (°) 1 74.15 2 75.76 3 74.05 4 75.32 5 75.96 6 74.05 7 75.48 ...

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Abstract

The invention provides a method for coupling photonic crystal fiber components, including: cleaning the waveguide chip and pigtail; fixing the chip and pigtail; determining the position of the output end of the chip; adjusting the position of the pigtail to find the maximum output point of extinction ratio and power ;Coupling dispensing, exposure bonding, pigtail protection. The method of the invention can realize the coupling of the photonic crystal fiber without blocking the air gap, is convenient to operate, and improves the reliability of the photonic crystal fiber connection.

Description

technical field [0001] The invention relates to a connection technology of photonic crystal fiber, more specifically a method for coupling of photonic crystal fiber components. Background technique [0002] The coupling of optical waveguide is essentially the connection of optical fiber and chip under six degrees of freedom. Ordinary polarization-maintaining fiber is greatly affected by the environment, and its temperature stability is poor, which makes its application range greatly limited by the environment. However, due to the low bending loss of photonic crystal fiber, high birefringence characteristics, low dispersion, With the advantages of high temperature stability, it provides a new solution to the poor environmental adaptability of ordinary polarization-maintaining optical fibers. Moreover, the photonic crystal fiber has high birefringence characteristics, and can maintain good polarization state transmission even under the action of external force, temperature an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/38
CPCG02B6/3839G02B6/3847G02B6/385G02B6/3861
Inventor 白国财郑国康黄韬刘瑞丹周建伟丁东发夏君磊
Owner BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH