Abstract

We propose a D-shaped photonic crystal fiber (PCF) refractive index sensor with ultrahigh sensitivity and a wide detection range. The gold layer is deposited on the polished surface, avoiding filling or coating inside the air holes of the PCF. The influences of the gold layer thickness and the diameter of the larger air holes are investigated. The sensing characteristics of the proposed sensor are analyzed by the finite element method. The maximum sensitivity can reach $\mathrm{31,000}\mathrm{nm}/\mathrm{RIU}$, and the refractive index detection range is from 1.32 to 1.40. Our proposed PCF has excellent sensing characteristics and is competitive in sensing devices.

© 2018 Optical Society of America

D-shaped photonic crystal fiber plasmonic refractive index sensor based on gold grating

Junjie Lu, Yan Li, Yanhua Han, Yi Liu, and Jianmin Gao
Appl. Opt. 57(19) 5268-5272 (2018)

D-shaped photonic crystal fiber sensor based on the surface plasmon resonance effect for refractive index detection

Xiaokai Liu, Jinhui Yuan, Yuwei Qu, Jingao Zhang, Xian Zhou, Binbin Yan, Kuiru Wang, Xinzhu Sang, and Chongxiu Yu
Appl. Opt. 62(16) E83-E91 (2023)

D-shaped photonic crystal fiber refractive index sensor based on surface plasmon resonance

Guowen An, Xiaopeng Hao, Shuguang Li, Xin Yan, and Xuenan Zhang
Appl. Opt. 56(24) 6988-6992 (2017)

High-sensitivity birefringent and single-layer coating photonic crystal fiber biosensor based on surface plasmon resonance

Min Liu, Xu Yang, Ping Shum, and Hongtao Yuan
Appl. Opt. 57(8) 1883-1886 (2018)

Refractive index sensing characteristics in a D-shaped photonic quasi-crystal fiber sensor based on surface plasmon resonance

Chenguang Li, Bei Yan, and Jianjun Liu
J. Opt. Soc. Am. A 36(10) 1663-1668 (2019)