Institution:University of Ottawa

Title of Paper:Optical fiber random grating-based multiparameter sensor

Journal:Optics Letters

Summary:A novel multiparameter fiber-optic sensor based on a femtosecond laser micromachined random grating is proposed and demonstrated to realize simultaneous measurement of temperature, axial strain, and surrounding refractive index. A wavelength-division spectral cross-correlation algorithm is adopted to extract the phase variation induced spectral shift responding to different external disturbances. Sensitivities of 10.32 pm/°C, 1.24 pm/με, and −1520.6  pm/RIU were achieved for temperature, axial strain, and surrounding refractive index, respectively. The fiber random grating without phase mask fabrication and high physical strength is an excellent alternative aiming at simple and compact multifunctional fiber sensors.

First Author:Yanping Xu

Correspondence Author:Ping Lu,Xiaoyi Bao

All the Authors:Song Gao,Dao Xiang,Ping Lu,Stephen Mihailov

Discipline:Engineering

First-Level Discipline:Optical Engineering

Document Type:J

Volume:40

Issue:23

Page Number:5514-5517

Translation or Not:No

Date of Publication:2015-11

Included Journals:SCI

Release Time:2020-04-07