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Proceedings Paper

Terminated optical fiber sensor based on surface plasmon resonance for refractive index detection
Author(s): Mitsuhiro Iga; Atsushi Seki; Kazuhiro Watanabe
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Paper Abstract

A novel refractive index sensor has been presented which is characterized by the sensing part on the tip of the optical fiber. The principle of this sensor is based on surface plasmon resonance at the interface between gold and medium to be detected. In order to induce the evanescent wave interrogation, the proposed structure has been devised to deliberately leak the transmitted light into the cladding layer of the fiber by a mechanical cleaving and a thermal fusion splicing. The sensor response obtained from the spectral experiment exhibited availability in the use of spectral and optical intensity operation. The sensitivity for the case of spectral operation has achieved the values of 3.35*10-4 and 4.99*10-5 for 1.333 and 1.398 refractive index units, respectively.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004);
Show Author Affiliations
Mitsuhiro Iga, Soka Univ. (Japan)
Atsushi Seki, Soka Univ. (Japan)
Kazuhiro Watanabe, Soka Univ. (Japan)

Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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