Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Fiber Bragg Grating Dynamic Demodulation Based On Non-equilibrium Interferometry

Not Accessible

Your library or personal account may give you access

Abstract

Non-equilibrium interferometric Fiber Bragg Grating (FBG) sensor is suitable for the accurate measurements of high-frequency dynamic stress, vibration, etc because of its high sensitivity and high frequency response compared to other types of FBG sensors. In this paper, a Phase Generation Carrier (PGC) demodulation technique of non-equilibrium interferometric FBG sensor that based on ARCTAN algorithm by using an arctangent algorithm with a simple method, has been investigated, which can avoid the high-frequency noise increases, the error accumulation, the integrator signal jump of the integrator and other inherent weaknesses in the system. ARCTAN has a better response characteristic of the mutant signals, especially for low-frequency large-signal that can be demodulated with a greater range. The experimental result demonstrate that implementing measured resolution can up to 10nε/√Hz@500Hz in vibration strain, a signal sampling rate to 100 KHz and a frequency response range up to 1 KHz. This method can improve the performance of the system greatly which has potential significance for practical sensor application.

© 2011 Optical Society of America

PDF Article
More Like This
Demodulation of a Fiber Bragg Grating Sensor System Based on a Linear Cavity Multi-wavelength Fiber Laser

Shan Cong, Yunxu Sun, Lifeng Pan, Yating Fang, Jiajun Tian, Yanfu Yang, and Yao Yong
831105 Asia Communications and Photonics Conference and Exhibition (ACP) 2011

Non-contact Micro Vibration Measurement System Based on Non-equilibrium Optical Fiber Michelson Interferometer

Jie Zhang, Zhenguo Jing, Chuanqi Xing, and Wei Peng
WT4A.42 Workshop on Specialty Optical Fibers and their Applications (WSOF) 2015

Distributed Acoustic Sensing System Based on Broadband Ultra-Weak Fiber Bragg Grating Array

Chengli Li, Zhihui Mei, Jianguan Tang, Kun Yang, and Minghong Yang
ThE14 Optical Fiber Sensors (OFS) 2018

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved