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Optical Engineering • Open Access

New idea for a D-type optical fiber sensor based on Kretschmann's configuration
Author(s): Shinn-Fwu Wang; Ming-Hung Chiu; Rong-Seng Chang

Paper Abstract

A new idea for a D-type optical fiber sensor based on Kretschmann's configuration is proposed. The sensing device is a D-type single mode fiber with a half-polished core, and a thin film layer of gold deposited on the flat side of the sensor. In order to achieve the best sensitivity of the D-type optical fiber sensor, we must choose suitable parameters, e.g., the thickness of the thin film layer of gold and the length of the sensor. We found that the experimental results are in good correspondence with theoretical results. The sensor's sensitivity can reach 2×10–4 refractive index unit (RIU) at least. Because the sensor has some merits, e.g., small size, less costly, smaller sample volume, easy measurement, and suitability for in vivo testing, etc., the D-type optical fiber sensor is valuable for chemical, biological, and biochemical sensing.

Paper Details

Date Published: 1 March 2005
PDF: 2 pages
Opt. Eng. 44(3) 030502 doi: 10.1117/1.1869515
Published in: Optical Engineering Volume 44, Issue 3
Show Author Affiliations
Shinn-Fwu Wang, National Central Univ. (Taiwan)
Ming-Hung Chiu, National Formosa Univ. (Taiwan)
Rong-Seng Chang, National Central Univ. (Taiwan)


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