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Proceedings Paper

Optical waveguide biosensor based on cascaded Mach-Zehnder interferometer and ring resonator with Vernier effect
Author(s): Xianxin Jiang; Longhua Tang; Jinyan Song; Mingyu Li; Jian-Jun He
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Paper Abstract

Optical waveguide biosensors based on silicon-on-insulator (SOI) have been extensively investigated owing to its various advantages and many potential applications. In this article, we demonstrate a novel highly sensitive biosensor based on cascaded Mach-Zehnder interferometer (MZI) and ring resonator with the Vernier effect using wavelength interrogation. The experimental results show that the sensitivity reached 1,960 nm/RIU and 19,100 nm/RIU for sensors based on MZI alone and cascaded MZI-ring with Vernier effect, respectively. A biosensing application was also demonstrated by monitoring the interaction between goat and antigoat immunoglobulin G (IgG) pairs. This integrated high sensitivity biosensor has great potential for medical diagnostic applications.

Paper Details

Date Published: 2 March 2015
PDF: 6 pages
Proc. SPIE 9310, Frontiers in Biological Detection: From Nanosensors to Systems VII, 931003 (2 March 2015); doi: 10.1117/12.2077943
Show Author Affiliations
Xianxin Jiang, Zhejiang Univ. (China)
Longhua Tang, Zhejiang Univ. (China)
Jinyan Song, Zhejiang Univ. (China)
Mingyu Li, Zhejiang Univ. (China)
Jian-Jun He, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 9310:
Frontiers in Biological Detection: From Nanosensors to Systems VII
Benjamin L. Miller; Philippe M. Fauchet; Brian T. Cunningham, Editor(s)

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