Abstract

This paper investigates a refractive index (RI) sensor based on a macrobending micro-plastic optical fiber (m-POF), which is used as a sensitive probe. The m-POFs are fabricated from commercial POFs using a heating and pulling method. The m-POFs have diameters of approximately 20–40 μm and act as multimode fibers at visible wavelengths. The macrobending structure of the m-POFs is simulated and optimized using the ray tracing method. The RI sensitivity and the range of RI measurements are affected by the structure parameter $R/\rho$, which is the ratio of the radius of curvature of the macrobending fiber to the radius of the fiber itself. A linear RI sensing response is obtained when $R/\rho =20$ and the sensitivity reaches 500%/RIU. The experimental results coincide well with the simulation results.

© 2014 Optical Society of America

Temperature dependence of a refractive index sensor based on a macrobending micro-plastic optical fiber

Ning Jing, Chuanxin Teng, Xiaowei Zhao, and Jie Zheng
Appl. Opt. 54(8) 1890-1893 (2015)

Refractive index sensor based on a multi-notched plastic optical fiber

Chuanxin Teng, Ning Jing, Fangda Yu, Yue Ding, and Jie Zheng
Appl. Opt. 56(7) 1833-1838 (2017)

Refractive index sensor based on plastic optical fiber with tapered structure

Feng De-Jun, Liu Guan-Xiu, Liu Xi-Lu, Jiang Ming-Shun, and Sui Qing-Mei
Appl. Opt. 53(10) 2007-2011 (2014)

Cascaded plastic optical fiber based SPR sensor for simultaneous measurement of refractive index and temperature

Chuanxin Teng, Xinjing Li, Ming Chen, Shijie Deng, Hongchang Deng, Minmin Xue, Libo Yuan, Rui Min, Xiaosong Fu, and Xuehao Hu
Biomed. Opt. Express 15(2) 793-801 (2024)

Temperature sensing utilizing unclad plastic optical fiber with a balloon-like bent structure

Nazrah Ilyana Sulaiman, Nor Hafizah Ngajikin, Nurfatihah Che Abd Rashid, Afiqah Yaacob, Maslina Yaacob, Mohd Haniff Ibrahim, and Noran Azizan Cholan
Appl. Opt. 60(13) 3895-3900 (2021)