Optical fiber sensor based on the short-range surface plasmon polariton mode  

作　　者：王晓妍 刘仿 刘奥 樊博宇 崔开宇 冯雪 张巍 黄翊东 

机构地区：[1]State Key Laboratory of Integrated Optoelectronics,Department of Electronic Engineering,Tsinghua University

出　　处：《Chinese Optics Letters》2014年第1期9-12,共4页中国光学快报（英文版）

基　　金：supported by the National"973"Programs of China(Nos.2013CBA01704,2010CB327405,and 2011CBA00608);the National Natural Science Foundation of China(Nos.61036011,61107050,and 61036010)

摘　　要：An optical fiber sensor for ultrathin layer sensing based o51 short-range surface plasmon polariton （SRSPP） is proposed, and the sensing characteristics are theoretically analyzed. Simulation results indicate that even for a detecting layer much thinner than the vacuum wavelength, a resolution as high as 3.7×10-6 RIU can be obtained. Moreover, an average ttfickness-detection sensitivity of 6.2 dB/nm is obtained, which enables the sensor to detect the thickness variation of the ultrathin layer up to tens of nanometers. The sensitive region of thickness could be adjusted by tuning the structure parameters.An optical fiber sensor for ultrathin layer sensing based o51 short-range surface plasmon polariton （SRSPP） is proposed, and the sensing characteristics are theoretically analyzed. Simulation results indicate that even for a detecting layer much thinner than the vacuum wavelength, a resolution as high as 3.7×10-6 RIU can be obtained. Moreover, an average ttfickness-detection sensitivity of 6.2 dB/nm is obtained, which enables the sensor to detect the thickness variation of the ultrathin layer up to tens of nanometers. The sensitive region of thickness could be adjusted by tuning the structure parameters.

关 键 词：Optical fiber sensor based on the short-range surface plasmon polariton mode NM RIU 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]