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Proceedings Paper

Integrated optofluidic label-free biosensors using a silicon-nitride-based coupled-resonator optical waveguide
Author(s): Jiawei Wang; Zhanshi Yao; Andrew W. Poon
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Paper Abstract

In this paper, we report our recent progress in silicon-nitride-based optofluidic label-free biosensors using a surfacefunctionalized coupled-resonator optical waveguide (CROW) in the visible wavelengths. The working principle is based on far-field imaging of the CROW mode-field intensity distributions at a fixed probe wavelength. The imaged pattern variation reflects real-time analyte-binding information on the CROW surfaces. Our surface-functionalized 16- microring CROW reveals six eigenstates with distinctive mode-field intensity distributions. Our proof-of-concept sensing experiment at an arbitrarily chosen probe wavelength within the CROW transmission band shows a detection of streptavidin concentration down to 40 ng/ml.

Paper Details

Date Published: 1 March 2016
PDF: 10 pages
Proc. SPIE 9750, Integrated Optics: Devices, Materials, and Technologies XX, 975014 (1 March 2016); doi: 10.1117/12.2214100
Show Author Affiliations
Jiawei Wang, Hong Kong Univ. of Science and Technology (Hong Kong, China)
Zhanshi Yao, Hong Kong Univ. of Science and Technology (Hong Kong, China)
Andrew W. Poon, Hong Kong Univ. of Science and Technology (Hong Kong, China)


Published in SPIE Proceedings Vol. 9750:
Integrated Optics: Devices, Materials, and Technologies XX
Jean-Emmanuel Broquin; Gualtiero Nunzi Conti, Editor(s)

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