Automated fused biconical taper device for polarization maintaining fiber coupler

Abstract

The invention discloses an automatic deflection-keeping optical fiber coupler fusion cone-stretching device, which comprises the following parts: working bench, automatic shaft-shoot system on the working bench, medium approximate system, fusion cone-stretching system, on-line packaging system and main control computer, wherein the left and right symmetrical distribution mechanic platforms and control panel are set on the working bench; the automatic shaft-shoot system contains four groups of the same structure electric rotary system, light source and microscopic image system with four groups of diagonal shape electric rotary system on the left and right mechanic platforms as well as light source and microscopic image system on the working bench; the medium approximate system is set on the central line position of left and right mechanic platforms; the fusion cone-stretching system contains heat source and motion cone-stretching system; the left and right mechanic platforms are fixed on the motion cone-stretching system separately.

Description

Technical field [0001] The invention mainly relates to the submicron manufacturing theory and key technical fields of optical fiber devices, and particularly refers to an automatic polarization-maintaining optical fiber coupler melting taper device. Background technique [0002] Since the polarization-maintaining fiber has a strong ability to maintain the polarization of linearly polarized light, its applications in the fields of coherent optical communication, optical fiber sensing, and fiber optic gyroscopes are becoming more extensive. Among them, the polarization-maintaining fiber coupler can stably transmit two orthogonal linearly polarized lights and keep the respective polarization states unchanged over a long distance. It is a key component of various military interference sensors and coherent communications. One of the basic components of high-precision and high-performance fiber optic gyroscopes and hydrophones. [0003] At present, most of the domestic polarization-mai...

AI Technical Summary

Problems solved by technology

Due to the manual operation, the technical requirements for the operator are very high, the speed is slow, the output is low, the yield is low, and the consistency of the device performance is poor, so the product price is high; although there are polarization-maintaining coupler production platforms abroad, the price is too high. , and there are more and more demands for high-performance and low-cost polarization-maintaining fiber couplers in the military and civilian fields, so it is necessary to develop a set of simple and economical automatic polarization-maintaining fiber couplings including alignment, taper, packaging and other process engineering device production system

[0004] There are many factors affecting the manufacture of polarization maintaining couplers. Among them, the use of an axis-aligning mechanism to automatically and accurately and quickly determine the polarization axis, and keeping the polarization axes of the two fibers parallel during the tapering process is the key to the success of the coupler, which will seriously affect the The polarization extinction ratio of the polarization-maintaining coupler; the middle approach mechanism must make the two fibers close together to make the coupling and splitting of the fibers possible; the melting temperature of the flame and the speed and time of the tapering will affect the coupling of the coupler. The double-cone structure, such as smoothness and the shape of the cone, will increase the additional loss of the coupler; improper control of the motion accuracy of the packaging table, packaging time, etc. will also make the index of the polarization-maintaining coupler worse

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