Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 37,
  • Issue 18,
  • pp. 4531-4536
  • (2019)

Integrated Differential Area Method for Variable Sensitivity Interrogation of Tilted Fiber Bragg Grating Sensors

Not Accessible

Your library or personal account may give you access

Abstract

A novel demodulation method for tilted fiber Bragg grating (TFBG) refractometry is proposed and experimentally demonstrated. This “integrated differential area” method consists of calculating the difference between measured spectral transmission over a selected bandwidth and a reference spectrum and then integrating the absolute value of the result. This has the effect of multiplying the effect of the individual cladding mode resonance shifts relative to the background noise. The method further allows the use of spectrum analyzers with low resolution, including portable ones with spectral resolution of the order of 150–200 pm without loss of sensitivity. In practical measurements, a reflection configuration is demonstrated using a TFBG cascaded by a chirped-fiber Bragg grating with bandwidth of 19 nm. A refractive index sensitivity of 7.19% transmission change per refractive index unit is achieved for refractive indices ranging from 1.32 to 1.38, along with a limit of detection of 0.00026 refractive index units.

PDF Article
More Like This
Interrogation of coarsely sampled tilted fiber Bragg grating (TFBG) sensors with KLT

Madina Shaimerdenova, Aliya Bekmurzayeva, Marzhan Sypabekova, and Daniele Tosi
Opt. Express 25(26) 33487-33496 (2017)

High resolution interrogation of tilted fiber grating SPR sensors from polarization properties measurement

Christophe Caucheteur, Yanina Shevchenko, Li-Yang Shao, Marc Wuilpart, and Jacques Albert
Opt. Express 19(2) 1656-1664 (2011)

High-resolution interrogation of tilted fiber Bragg gratings using an extended range dual wavelength differential detection

François Ouellette, Jianfeng Li, Zhonghua Ou, and Jacques Albert
Opt. Express 28(10) 14662-14676 (2020)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


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