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

Author

Lehmann, Hartmut ; Bartelt, Hartmut ; Willsch, Reinhardt ; Am?©zcua-Correa, Rodrigo ; Knight, Jonathan C.

Author_Institution

Dept. of Fiber Opt., Inst. of Photonic Technol. (IPHT), Jena, Germany

Volume

11

Issue

11

fYear

2011

Firstpage

2926

Lastpage

2931

Abstract

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.

Keywords

distributed sensors; fibre optic sensors; gas sensors; infrared detectors; infrared spectroscopy; laser beam applications; photonic band gap; HC-PBGF; chemometrical method; distributed gas sensor cells; distributed sensor arrangement; hollow core photonic bandgap fiber; in-line gas sensor; infrared sensor; laser-drilled lateral microchannel; natural gas component; optical path lengths; wavelength 1.5 mum to 1.7 mum; white light spectroscopy; Absorption; Fiber lasers; Laser beams; Optical fiber amplifiers; Optical fiber networks; Optical fiber sensors; Gas detectors; infrared sensors; optical fiber sensors; photonic bandgap fibers;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

Conference_Location

5/5/2011 12:00:00 AM

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2011.2151184

Filename

5763743