In-Line Gas Sensor Based on a Photonic Bandgap Fiber With Laser-Drilled Lateral Microchannels

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 μm wavelengths, covering th...

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Bibliographic Details
Published in:IEEE sensors journal 2011-11, Vol.11 (11), p.2926-2931
Main Authors: Lehmann, H., Bartelt, H., Willsch, R., Amezcua-Correa, R., Knight, J. C.
Format: Article
Language:English
Subjects:
Absorption
Fiber lasers
Fibers
Gas detectors
Gas sensors
Infrared
infrared sensors
Laser beams
Microchannels
Natural gas
Optical fiber amplifiers
Optical fiber networks
Optical fiber sensors
photonic bandgap fibers
Photonics
Sensors
White light
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Summary: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 μm 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.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2011.2151184