Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber

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Affiliation of Author(s):Tianjin University

Journal:IEEE ACCESS

Place of Publication:USA

Key Words:Graphene oxide, long-period ber grating, refractive index measurement, two-mode ber

Abstract:Refractive index (RI) sensing is a promising technique in a variety of different scientic
and industrial applications. In this paper, we theoretically and experimentally propose a newly-designed
RI sensor. The proposed sensor consists of a particular long-period ber grating inscribed in a two-mode
ber (LPFG-TMF) coated with tunable graphene oxide (GO), and the special structure allows an extremely
high sensitivity in the transition region. The mode coupling between the LP11 core mode and the sixth-order
cladding mode in the LPFG-TMF offers an apparently higher sensitivity feature. And the s

All the Authors:Jie DONG , Mei SANG*, Shang WANG , Tianhua XU , Lei YANG, Xun YU, and Tiegen LIU

First Author:Jie DONG

Indexed by:Applied Research

Correspondence Author:Mei SANG

Volume:8

Page Number:109028-109037

Translation or Not:no

CN No.:null