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29 November 2011 Sensitivity-enhanced optical temperature sensor with cascaded LPFGs
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Proceedings Volume 8307, Passive Components and Fiber-Based Devices VIII; 83070U (2011) https://doi.org/10.1117/12.904304
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China
Abstract
We propose a new structure of optical fiber temperature sensor with cascaded long-period fiber gratings (LPFGs) and investigate the temperature dependent loss of cascaded LFPGs. Each of the cascaded LPFGs has the same resonance wavelength with the same temperature change, because the cascaded LPFGs are made of a heat-shrinkable tube and a screw. The total resonance loss of proposed cascaded LPFGs shows higher temperature sensitivity than that of a single LPFG. The thermal coefficient of 4-cascaded LPFG also shows more than 4 times larger than that of a single one.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yasuhiro Tsutsumi, Yuji Miyoshi, and Masaharu Ohashi "Sensitivity-enhanced optical temperature sensor with cascaded LPFGs", Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83070U (29 November 2011); https://doi.org/10.1117/12.904304
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