Refractive index sensor based on a step index multimode polymer optical fiber with a micro-hole created by a miniature numerical control machine  

作　　者：辛高鹏 彭坤 谷志民 赵健 范瑞琴 刘璐 徐晓峰 

机构地区：[1]State Key Laboratory of Superhard Materials,College of Physics,Jilin University

出　　处：《Chinese Optics Letters》2013年第2期1-3,共3页中国光学快报（英文版）

基　　金：supported by the National "973" Program of China(No.2011CB921603);the National Natural Science Foundation of China(No.11074097)

摘　　要：A compact in-fiber refractive index （RI） sensor based on a step index multimode polymer optical fiber with a micro-hole drilled by a miniature numerical control machine is presented. A good linear relationship between the transmission and RI over a large operating range from 1.335 to 1.475 and a sensitivity of 36 071.43 mV/RIU （RI unit） are found. The relationship between the transmission and the RI of the hole depends on the micro-hole＇s diameter and depth. The RI sensor developed in this letter is low-cost, easily fabricated, and capable of continuous measurement.A compact in-fiber refractive index （RI） sensor based on a step index multimode polymer optical fiber with a micro-hole drilled by a miniature numerical control machine is presented. A good linear relationship between the transmission and RI over a large operating range from 1.335 to 1.475 and a sensitivity of 36 071.43 mV/RIU （RI unit） are found. The relationship between the transmission and the RI of the hole depends on the micro-hole＇s diameter and depth. The RI sensor developed in this letter is low-cost, easily fabricated, and capable of continuous measurement.

关 键 词：Numerical control systems Plastic optical fibers SENSORS 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]