Gas sensing using air-guiding photonic bandgap fibers

Tuomo Ritar, J. Tuominen, Hanne Ludvigsen, J.C. Petersen, Niels Thorkild Sørensen, Theis Peter Hansen, Harald R. Simonsen

Research output: Contribution to journalJournal articleResearchpeer-review


We demonstrate the high sensitivity of gas sensing using a novel air-guiding photonic bandgap fiber. The bandgap fiber is spliced to a standard single-mode fiber at the input end for easy coupling and filled with gas through the other end placed in a vacuum chamber. The technique is applied to characterize absorption lines of acetylene and hydrogen cyanide employing a tunable laser as light source. Measurements with a LED are also performed for comparison. Detection of weakly absorbing gases such as methane and ammonia is explored.
Original languageEnglish
JournalOptics Express
Issue number17
Pages (from-to)4080-4087
Publication statusPublished - 2004


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