Title :
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
fDate :
31 Oct-3 Nov 1994
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;
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
DOI :
10.1109/LEOS.1994.586465
