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Proceedings Paper

Discrimination of chemical vapor and temperature using an in-line modal interferometer based on an exterior hole-assisted polarization-maintaining photonic crystal fiber
Author(s): Min-Seok Yoon; Naram Jun; Sang Bae Lee; Young-Geun Han
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Paper Abstract

A reflective in-line modal interferometer based on a polarization-maintaining photonic crystal fiber (PM-PCF) with two exterior air holes is proposed for simultaneous measurement of chemical vapor and temperature. After fusion-splicing the PM-PCF with a standard single-mode fiber, we collapse all of air holes in the PM-PCF resulting in two types of interference patterns between the core and the cladding modes in the PM-PCF depending on two polarization states. Since two large air holes at the facet of the proposed modal interferometer are left open, a chemical vapor can be infiltrated into the voids. Different sensitivities corresponding to input polarization states are utilized for discrimination between chemical vapor and temperature sensitivities.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91574B (2 June 2014); doi: 10.1117/12.2058639
Show Author Affiliations
Min-Seok Yoon, Hanyang Univ. (Korea, Republic of)
Naram Jun, Hanyang Univ. (Korea, Republic of)
Sang Bae Lee, Korea Institute of Science and Technology (Korea, Republic of)
Young-Geun Han, Hanyang Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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