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Proceedings Paper

Refractive index sensing utilizing photonic crystal nano-beam cavity with slotted stack
Author(s): Peipeng Xu; Kaiyuan Yao; Jiajiu Zheng; Xiaowei Guan; Yaocheng Shi
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Paper Abstract

Two types of optical sensor based on one-dimensional Photonic Crystal (PhC) stack nanobeam cavity has been designed, fabricated and characterized. One-dimensional PhC stack nanobeam cavity with measured Q-factors up to 27000 and a sensitivity of 270nm/RIU has been demonstrated. Then, we introduce a finite width slot between two periodic arrays of the dielectric stacks. Thus, the majority of optical field distributes in the slotted low-index area and the light matter interaction with the analytes has been enhanced. A sensitivity of 410nm/RIU has been achieved while maintaining the Q-factors near 104.

Paper Details

Date Published: 8 March 2014
PDF: 6 pages
Proc. SPIE 8988, Integrated Optics: Devices, Materials, and Technologies XVIII, 89881C (8 March 2014); doi: 10.1117/12.2042457
Show Author Affiliations
Peipeng Xu, Zhejiang Univ. (China)
Kaiyuan Yao, Zhejiang Univ. (China)
Jiajiu Zheng, Zhejiang Univ. (China)
Xiaowei Guan, Zhejiang Univ. (China)
Yaocheng Shi, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 8988:
Integrated Optics: Devices, Materials, and Technologies XVIII
Jean Emmanuel Broquin; Gualtiero Nunzi Conti, Editor(s)

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