Refractive index sensitivity of zinc oxide-coated long period fiber grating inscribed in a two-mode fiber

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Affiliation of Author(s):Tianjin Univeristy

Teaching and Research Group:光纤传感

Journal:Proceedings of SPIE

Place of Publication:USA

Funded by:国家重点研究计划项目

Key Words:Long period fiber grating, mode converting, two-mode-fiber, ZnO thin film, refractive index sensitiv

Abstract:we propose and investigate a novel long period fiber grating (LPFG) refractive index (RI) sensor, which
is inscribed in a two-mode fiber and coated with the zinc oxide (ZnO) thin film. According to the coupled mode theory,
the resonant wavelength, which appears at approximately 1550 nm, originates from the mode coupling between the LP11
core mode and the sixth order cladding mode. As a comparison, single-mode LPFGs (LPFG-SMFs) with and without
ZnO thin film are fabricated and they are formed by coupling light from the LP01 core mode into the sixth order cladding
mode. The sensing performance i

All the Authors:Jie, Dong; Sang, Mei*; Wang, Shuang; Zhao, Fan; Wang, Yao; Du, Xiangyu; Wei, Dong; Liu, Tiegen

First Author:Jie, Dong

Indexed by:Applied Research

Correspondence Author:Sang, Mei

Volume:1143612

Page Number:1143612

Translation or Not:no

CN No.:null