Modified extrinsic Fabry-Perot interferometric hydrogen gas sensor

Author

Zeakes, Jason S. ; Murphy, Kent A. ; Elshabini-Riad, Aicha ; Claus, Richard O.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

2

fYear

1994

fDate

31 Oct-3 Nov 1994

Firstpage

235

Abstract

We demonstrate the operation of an extrinsic Fabry-Perot interferometric sensor modified for the detection of hydrogen gas. The sensor is sputter coated with a 2 μm layer of palladium metal which senses as the active sensing element. A theoretical description of the sensor is given, and its operation as a dynamically varying hydrogen sensor is described. A maximum sensitivity of 32 ppm for this first generation sensor is predicted, and a discussion is given concerning methods for improving the resolution in future EFPI hydrogen gas sensors

Keywords

Fabry-Perot interferometers; 2 mum; EFPI H₂ gas sensors; Fabry-Perot interferometric H₂ gas sensor; H₂; Pd; active sensing element; dynamically varying H₂ sensor; extrinsic Fabry-Perot interferometric sensor; fiber optic sensor; maximum sensitivity; sputter coated Pd layer; Fabry-Perot; Fresnel reflection; Gas detectors; Hydrogen; Optical fiber polarization; Optical fiber sensors; Optical reflection; Optical sensors; Palladium; Sensor phenomena and characterization;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94 Conference Proceedings. IEEE

Conference_Location

Boston, MA

Print_ISBN

0-7803-1470-0

Type

conf

DOI

10.1109/LEOS.1994.586465

Filename

586465