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Proceedings Paper

Sensitivity improvement of UV FBG sensor by downsizing grating diameter
Author(s): Il-Shin Song; Chan-Young Kim; Hyun-Kyoung Kim; Bok-Hyeon Kim; Tae-Jung Ahn
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Paper Abstract

We have recently reported azobenzene-coated fiber Bragg grating (FBG) for ultraviolet (UV) sensor. In this paper, we introduce an etched FBG for the strain sensitivity enhancement of the UV fiber grating sensors, which is inversely proportional to the fiber diameter. The sensitivity of the etched FBG with a diameter of ~60 μm is improved to be greater than twice of the original 125 μm fiber. In addition, the sensor system designed on the basis of the round-trip configuration can be used for many practical sensing applications in the field.

Paper Details

Date Published: 15 October 2013
PDF: 4 pages
Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 892406 (15 October 2013); doi: 10.1117/12.2031500
Show Author Affiliations
Il-Shin Song, Chosun Univ. (Korea, Republic of)
Chan-Young Kim, Chosun Univ. (Korea, Republic of)
Hyun-Kyoung Kim, Chosun Univ. (Korea, Republic of)
Bok-Hyeon Kim, Gwangju Institute of Science and Technology (Korea, Republic of)
Tae-Jung Ahn, Chosun Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8924:
Fourth Asia Pacific Optical Sensors Conference
Minghong Yang; Dongning Wang; Yun-Jiang Rao, Editor(s)

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