Sol-gel silica coated optical fiber sensor for ammonia gas detection

Dejun Liu, Arun Kumar Mallik, Wei Han, Fangfang Wei, Lei Sun, Jinhui Yuan, Chongxiu Yu, Gerald Farrell, Yuliya Semenova, Qiang Wu

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

A high sensitivity ammonia gas sensor based on a tapered small core single-mode fiber (SCSMF) structure for measurement of ammonia gas concentration is reported. The proposed tapered SCSMF fiber structure has a waist diameter of 13.5 μm and it is fabricated using a customized microheater brushing technique. The silica based material prepared by sol-gel method is used as a coating applied to the surface of tapered fiber structures. Experimental results show that sensor is very sensitive to ammonia. The best measurement resolution of the ammonia concentration is estimated to be 16 ppb for gas concentrations of 0.5 ppm to 2.5 ppm while the response and recovery times are less than 5 and 10 minutes respectively.
Original languageEnglish
Title of host publicationProceedings of the 15th International Conference on Optical Communications and Networks (ICOCN)
PublisherIEEE
Pages1-3
ISBN (Print)9781509034918
DOIs
Publication statusE-pub ahead of print - 13 Mar 2017
Event15th International Conference on Optical Communications and Networks (ICOCN) - Hangzhou
Duration: 13 Mar 2017 → …

Conference

Conference15th International Conference on Optical Communications and Networks (ICOCN)
Period13/03/17 → …

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