基于Sagnac环干涉效应的微结构光纤及相关组件

By introducing temperature-sensitive materials and microstructured optical fibers with specific hole structures into optical fibers, and combining the Sagnac ring interference effect, the problem of low sensitivity of traditional optical fiber sensors has been solved, achieving high-precision temperature measurement and showing broad application prospects.

CN116224486BActive Publication Date: 2026-07-17BEIJING UNIV OF POSTS & TELECOMM

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF POSTS & TELECOMM
Filing Date
2023-01-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing fiber optic temperature sensors suffer from limited application in practical engineering due to the fixed materials and structure of ordinary optical fibers, resulting in small sensing range, low sensitivity, complex structure, and high cost.

Method used

By employing microstructured optical fibers based on the Sagnac ring interference effect, and introducing temperature-sensitive materials and specific hole structures into the optical fibers, high-precision temperature measurement can be achieved by utilizing the birefringence effect of the microstructured optical fibers and the Sagnac ring interference effect.

Benefits of technology

It significantly improves the sensitivity and measurement accuracy of the sensor, has a simple structure and low cost, and is suitable for biochemical detection and engineering environmental detection.

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Abstract

本发明提供一种基于Sagnac环干涉效应的微结构光纤及相关组件,微结构光纤包括:基底材料、包层结构和纤芯;包层结构包括沿着光纤径向且远离纤芯的方向依次分布的第一填充孔结构、第二填充孔结构和N层空气孔结构,N为不小于2的正整数,第一填充孔结构和第二填充孔结构用于填充温敏材料,第一填充孔结构包括四个均匀围绕纤芯分布的椭圆形的第一填充孔,第二填充孔结构包括十二个均匀围绕纤芯分布且与第一填充孔的周向间隔设置的圆形的第二填充孔,每层空气孔结构包括十二个均匀围绕纤芯分布且与第二填充孔的周向间隔设置的圆形的空气孔。本发明可以达到更好的温度测量效果,且结构简单、成本低、灵敏度高,应用前景广阔。
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