Abstract

An optical fiber sensor for ultrathin layer sensing based on short-range surface plasmon polariton (SRSPP) is proposed, and the sensing characteristics are theoretically analyzed. Simulation results indicate that even for a detecting layer much thinner than the vacuum wavelength, a resolution as high as 3.7\times 10-6 RIU can be obtained. Moreover, an average thickness-detection sensitivity of 6.2 dB/nm is obtained, which enables the sensor to detect the thickness variation of the ultrathin layer up to tens of nanometers. The sensitive region of thickness could be adjusted by tuning the structure parameters.

© 2014 Chinese Optics Letters

Ultrathin layer sensing based on hybrid coupler with short-range surface plasmon polariton and dielectric waveguide

Ruiyuan Wan, Fang Liu, and Yidong Huang
Opt. Lett. 35(2) 244-246 (2010)

Sensing self-referenced fiber optic long-range surface plasmon resonance sensor based on electronic coupling between surface plasmon polaritons

Jian-Ying Jing, Qi Zhu, Zhe-Xin Dai, Si-Yuan Li, Qi Wang, and Wan-Ming Zhao
Appl. Opt. 58(23) 6329-6334 (2019)

Ultrasensitive biosensors based on long-range surface plasmon polariton and dielectric waveguide modes

Leiming Wu, Jun Guo, Hailin Xu, Xiaoyu Dai, and Yuanjiang Xiang
Photon. Res. 4(6) 262-266 (2016)

Long-range surface plasmon resonance-based hollow fiber temperature sensor with ultrahigh sensitivity and tunable detection range

Xian Zhang, Yangyang Xu, Xiao-Song Zhu, and Yi-Wei Shi
Opt. Express 31(16) 26398-26409 (2023)

Experimental observation of the short-range surface plasmon polariton mode and its longitudinal adiabatic compression in a metallic wedge

Bayajargal N. Tugchin, Norik Janunts, Michael Steinert, Stefan Fasold, and Thomas Pertsch
Opt. Express 29(23) 37161-37174 (2021)