Dual-resonance long-period grating in fiber loop mirror structure for liquid refractive index measurement

被引：10
|
作者：
Zawisza, R. [1 ,2 ]
Eftimov, T. [2 ]
Mikulic, P. [2 ]
Chinifooroshan, Y. [2 ]
Celebanska, A. [2 ]
Bock, W. J. [2 ]
Jaroszewicz, L. R. [1 ]
机构：
[1] Mil Univ Technol, Fac Adv Technol & Chem, Inst Appl Phys, 2 Gen Sylwestra Kaliskiego St, PL-00908 Warsaw, Poland
[2] Univ Quebec Outaouais, Photon Res Ctr, 101 Rue St Jean Bosco,Pavillon Lucien Brault, Gatineau, PQ J8X 3X7, Canada
来源：
OPTO-ELECTRONICS REVIEW | 2018年 / 26卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Optical engineering; Polarization-maintaining fiber; Dual-resonance long-period grating; Fiber optics sensors; Fiber loop mirror; POLARIZATION-MAINTAINING FIBER; HIGH-SENSITIVITY; SENSOR; MODE; STRAIN; LASER;
D O I：
10.1016/j.opelre.2017.11.002
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An interferometric structure based on a Dual-Resonance Long-Period Grating (DRLPG) within a Fiber Loop Mirror (FLM) is presented in this paper. Its purpose is to measure the refractive index (RI) of liquid analytes. The grating is the RI sensing probe, while the FLM serves as a band-pass filter. Due to the high extinction ratio of the FLM, amplitude measurements can be obtained, allowing implementation of the differential interrogation method to establish the sensitivity of the device. The use of a polarization controller makes it possible to fine-tune the interferometric peaks with respect to the two notches of the DRLPG. Precisely aligned configuration produces a maximum sensitivity of 3871.5 dB/RIU within the RI range of 1.3333 up to 1.3419 with linear sensor response. (c) 2017 Association of Polish Electrical Engineers (SEP). Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：24 / 28
页数：5
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