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Enhancement of plasma resonance in a Hi-Bi D-shaped photonic crystal fiber SPR sensor
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Paper Abstract

A D-shaped fiber surface plasmon resonance (SPR) sensor based on a Hi-Bi photonic crystal fiber (PCF) is investigated with finite element method. Through changing the size of the air holes beside the fiber core, it is found that the Hi-Bi structure can enhance the plasmon resonance at mid-infrared wavelength. The effect of the two fiber core side holes as well as the different gold film thickness on plasmon resonance is numerically investigated. A high and sharp loss peak is achieved, which indicates that the sensor should have high accuracy. The sensitivity of this D-shaped PCF sensor is obtained to be 8920nm/RIU in the range of 1.37 to 1.39 and the power sensitivity is 154 dB/(cm·RIU) in the range of 1.33 to 1.36. Particularly, near 1.36, with the detection limit of 0.1 nm the resolving power of the sensor is lower than 10-4 RIU with a figure of merit of 28.6.

Paper Details

Date Published: 15 November 2018
PDF: 8 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109646S (15 November 2018); doi: 10.1117/12.2511830
Show Author Affiliations
Shuai Wang, Zhengzhou Univ. (China)
The Univ. of New South Wales (China)
Xiaohong Sun, Zhengzhou Univ. (China)
Gangding Peng, The Univ. of New South Wales (Australia)

Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yue Yang, Editor(s)

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