Hydrogen detection using polarization diversity via a subwavelength fiber aperture

Steven J. McKeown; Lynford L. Goddard

doi:10.1109/JPHOT.2012.2214475

Hydrogen detection using polarization diversity via a subwavelength fiber aperture

Research output: Contribution to journal › Article

Abstract

A photonic hydrogen gas sensor is fabricated by etching a subwavelength aperture into an optically thick palladium film deposited on the facet of an optical fiber. Upon adsorption of hydrogen onto the palladium surface, the complex refractive index of the film will change, altering the transmission through the aperture. Due to the plasmonic resonances and enhanced transmission of the C aperture, its response to hydrogen is several times larger than that of a plain film or a nonresonant aperture. Furthermore, the asymmetry of the aperture produces a different hydrogen response for the two polarizations. This leads to different sensitivities to hydrogen. By measuring the polarization-dependent loss (PDL), we can accurately quantify the hydrogen concentration since common-mode noise is eliminated.

Original language	English (US)
Article number	6280585
Pages (from-to)	1752-1761
Number of pages	10
Journal	IEEE Photonics Journal
Volume	4
Issue number	5
DOIs	https://doi.org/10.1109/JPHOT.2012.2214475
State	Published - Sep 19 2012

Keywords

Gas detectors
nanophotonics
optical fiber sensors

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/JPHOT.2012.2214475

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McKeown, S. J., & Goddard, L. L. (2012). Hydrogen detection using polarization diversity via a subwavelength fiber aperture. IEEE Photonics Journal, 4(5), 1752-1761. [6280585]. https://doi.org/10.1109/JPHOT.2012.2214475

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