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

Intensity-modulated relative humidity sensing with polyvinyl alcohol coating and optical fiber gratings

Not Accessible

Your library or personal account may give you access

Abstract

A relative humidity (RH) sensor in reflection mode is proposed and experimentally demonstrated by using a polyvinyl alcohol (PVA)-coated tilted-fiber Bragg grating (TFBG) cascaded by a reflection-band-matched chirped-fiber Bragg grating (CFBG). The sensing principle is based on the RH-dependent refractive index of the PVA coating, which modulates the transmission function of the TFBG. The CFBG is properly designed to reflect a broadband of light spectrally suited at the cladding mode resonance region of the TFBG, thus the reflected optical signal passes through and is modulated by the TFBG again. As a result, RH measurements with enhanced sensitivity of 1.80μW/%RH are realized and demodulated in the range from 20% RH to 85% RH.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Novel Knob-integrated fiber Bragg grating sensor with polyvinyl alcohol coating for simultaneous relative humidity and temperature measurement

Guofeng Yan, Yanhong Liang, El-Hang Lee, and Sailing He
Opt. Express 23(12) 15624-15634 (2015)

Optical fiber relative-humidity sensor with polyvinyl alcohol film

Ainhoa Gastón, Fátima Pérez, and Joaquín Sevilla
Appl. Opt. 43(21) 4127-4132 (2004)

Twisted weakly coupled relative humidity sensor coated with a graphene oxide/polyvinyl alcohol composite

Yuqing Sun, Jiachen Guo, Yinfeng Xiao, Junfeng Fan, Jigang Chen, Dong Zhao, and Bo Jia
Appl. Opt. 61(22) 6658-6663 (2022)

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

Figures (4)

You do not have subscription access to this journal. Figure files 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