Refractive index sensor based on tapered PCF in-line interferometer  

作　　者：刘奇 王琴 

机构地区：[1]Department of Materials Science and Engineering,Nanjing University [2]Nanjing University High-Tech Institute at Suzhou

出　　处：《Chinese Optics Letters》2012年第9期13-16,共4页中国光学快报（英文版）

基　　金：supported by the National "973" Program of China (No. 2010CB327800);the Natural Science Foundation of Jiangsu Province of China (No.BK2010247);the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：A simple and compact refractive index sensor is demonstrated by tapering a photonic crystal fiber （PCF） in-line interferometer. The PCF is spliced between two single-mode fibers and tapered via hydrofluoric acid etching. Its sensitivity in liquid is more than an order of magnitude larger than the untapered one. By optimizing the etching process, we can fabricate more uniformly and thinly tapered PCF interferometers with higher sensitivity in the future.A simple and compact refractive index sensor is demonstrated by tapering a photonic crystal fiber （PCF） in-line interferometer. The PCF is spliced between two single-mode fibers and tapered via hydrofluoric acid etching. Its sensitivity in liquid is more than an order of magnitude larger than the untapered one. By optimizing the etching process, we can fabricate more uniformly and thinly tapered PCF interferometers with higher sensitivity in the future.

关 键 词：ETCHING Hydrofluoric acid INTERFEROMETERS Photonic crystal fibers REFRACTOMETERS Single mode fibers 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TN253[自动化与计算机技术—控制科学与工程]