Towards an all-fiber system for detection and monitoring of ammonia

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Detection of ammonia based on an all-fiber configuration is reported. The system consists of a hollowcore photonic-bandgap (HC-PBG) fiber with 20μm core diameter and transmission window from 1490 to 1680 nm. Absorption bands of ammonia at ∼1538 nm are targeted using a supercontinuum source with central wavelength at 1550 nm. We present the method of achieving a complete fiber system while addressing the gas entry/exit path through the HC-PBG. Analysis of the ammonia absorbance in the fiber with respect to fiber length and response time is investigated. By operating in the near infrared, we demonstrate how the proposed system addresses several challenges associated with fiber-based gas-sensing, using readily available commercial components.
Original languageEnglish
Title of host publicationProceedings of SPIE
Number of pages9
PublisherSPIE - International Society for Optical Engineering
Publication date2019
Article number1089506
ISBN (Print)9781510624337
Publication statusPublished - 2019
EventSPIE Photonics West 2019: BIOS - Moscone Centre, San Francisco, United States
Duration: 2 Feb 20197 Feb 2019


ConferenceSPIE Photonics West 2019: BIOS
LocationMoscone Centre
CountryUnited States
CitySan Francisco
Internet address
SeriesProgress in Biomedical Optics and Imaging - Proceedings of SPIE
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Absorption spectroscopy, Supercontinuum lasers, Hollow-core fibers

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