In-line gas sensor based on a photonic bandgap fiber with laser-drilled lateral microchannels

Hartmut Lehmann, Hartmut Bartelt, Reinhardt Willsch, Rodrigo Amezcua-Correa, Jonathan C Knight

Research output: Contribution to journalArticle

24 Citations (Scopus)


The fabrication, characterization, and gas sensor application of a hollow core photonic bandgap fiber (HC-PBGF) with laser drilled lateral microchannels will be described. The HC-PBGF was tailor-made for gas sensing applications in the near infrared region from 1.5 to 1.7 m wavelengths, covering the first harmonic absorptions of quite a number of natural gas components. Laser-drilled, lateral microchannels makes access to the light guiding core of the HC-PBGF and offers the ability to realize fast-responding, distributed gas sensor cells with large optical path lengths. The application of those cells in a distributed sensor arrangement using white light spectroscopy combined with chemometrical methods as interrogation method will be demonstrated.
Original languageEnglish
Pages (from-to)2926-2931
Number of pages6
JournalIEEE Sensors Journal
Issue number11
Publication statusPublished - Nov 2011


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