15 October 2013 Sensitivity improvement of UV FBG sensor by downsizing grating diameter
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Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 892406 (2013) https://doi.org/10.1117/12.2031500
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China
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.
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Il-Shin Song, Chan-Young Kim, Hyun-Kyoung Kim, Bok-Hyeon Kim, Tae-Jung Ahn, "Sensitivity improvement of UV FBG sensor by downsizing grating diameter", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 892406 (15 October 2013); doi: 10.1117/12.2031500; https://doi.org/10.1117/12.2031500
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