Institution:University of Ottawa

Title of Paper:Multi-parameter sensor based on stimulated Brillouin scattering in inverse-parabolic graded-index fiber

Journal:Optics Letters

Summary:We propose a unique multi-parameter optical fiber sensor based on intramodal stimulated Brillouin scattering of higher-order acoustic modes in inverse-parabolic graded-index fiber (IPGIF) without a mode converter. Both optical modes and acoustic modes guided in the IPGIF are characterized and demonstrated theoretically and experimentally. Simulation analysis shows that the multi-peak feature in the Brillouin gain spectrum of the IPGIF is attributed to the couplings between the guided optical mode and the higher-order acoustic modes. Thanks to the distinct acoustic properties of the peaks induced by the sharp refractive index profile of the IPGIF, the different temperature and strain dependences of the first three Brillouin peaks enable the discrimination of the temperature and strain at an accuracy of 0.85°C and 17.4 με.

First Author:Yanping Xu

Correspondence Author:Xiaoyi Bao

All the Authors:Meiqi Ren,Yang Lu,Ping Lu,Ping Lu,Lixian Wang,Younès Messaddeq,Sophie LaRochelle

Discipline:Engineering

First-Level Discipline:Optical Engineering

Document Type:J

Volume:41

Issue:6

Page Number:1138-1141

Translation or Not:No

Date of Publication:2016-03

Included Journals:SCI

Release Time:2020-04-07