A temperature-insensitive refractive index sensor based on D-type multimode fiber embedded in no-core fiber long-period grating

Kun Li; Bing Wu; Guoyu Zhang; Wenyan Xu; Ailin Yin; Jishuai Zhao; Yanan Yuan; Yongjie Sun; Xiaojun Cui; Feng Peng; Jun Yang

doi:10.1117/12.2666311

4 April 2023 A temperature-insensitive refractive index sensor based on D-type multimode fiber embedded in no-core fiber long-period grating

Kun Li, Bing Wu, Guoyu Zhang, Wenyan Xu, Ailin Yin, Jishuai Zhao, Yanan Yuan, Yongjie Sun, Xiaojun Cui, Feng Peng, Jun Yang

Author Affiliations +

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126174D (2023) https://doi.org/10.1117/12.2666311
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

A long-period fiber grating based on a D-type multimode fiber (DMF) embedded in a no-core fiber (NCF) has been designed and fabricated. The 5-period NCF-DMF-NCF (NDN-LPG) has a high resonance loss contrast (18dB). The theoretical analysis simulations are in agreement with the experimental results. We investigated the sensing response characteristics of NDN-LPG for refractive index and temperature, and the sensor achieved a wavelength sensitivity of 244.11nm/RIU in the range of 1.344-1.421 RIU with a low temperature sensitivity (22pm/°C).

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Kun Li, Bing Wu, Guoyu Zhang, Wenyan Xu, Ailin Yin, Jishuai Zhao, Yanan Yuan, Yongjie Sun, Xiaojun Cui, Feng Peng, and Jun Yang "A temperature-insensitive refractive index sensor based on D-type multimode fiber embedded in no-core fiber long-period grating", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126174D (4 April 2023); https://doi.org/10.1117/12.2666311

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KEYWORDS

Refractive index

Sensors

Cladding

Structured optical fibers

Multimode fibers

Simulations

Technology

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