Title :
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
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;
Journal_Title :
Sensors Journal, IEEE
Conference_Location :
5/5/2011 12:00:00 AM
DOI :
10.1109/JSEN.2011.2151184
