曲率
材料科学
光学
干涉测量
包层(金属加工)
马赫-曾德尔干涉仪
光子晶体光纤
灵敏度(控制系统)
光纤
物理
复合材料
几何学
电子工程
数学
工程类
作者
Jitendra Narayan Dash,Rajan Jha
出处
期刊:Journal of Optics
[IOP Publishing]
日期:2016-08-30
卷期号:18 (10): 105002-105002
被引量:23
标识
DOI:10.1088/2040-8978/18/10/105002
摘要
We propose a Mach–Zehnder interferometric sensor based on tapered Photonic Crystal Fiber (PCF) with up-tapered collapsed region for measurement of parameters such as curvature, strain and temperature. The up-tapered collapsed region helps in excitation of the cladding modes in PCF and these modes interfere with each other at the tapered region of PCF which is completely collapsed. Three tapered PCFs with varying geometry are fabricated and their effect on curvature sensitivity is analyzed. Experimental results show that the proposed sensor has a curvature sensitivity of 7.56 nm m−1 with negligible hysteresis effect. Moreover, the proposed sensor shows a strain sensitivity of 1.6 pm/μe along with a maximum temperature sensitivity of 51.6 pm °C−1. In addition to this, the response of the interference pattern to all these parameters is found to be linear.
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