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Vertical silicon nanowire-based racetrack resonator optical sensor

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journal contribution
posted on 2022-11-22, 21:12 authored by S. M. Sherif, M. Y. Elsayed, L. A. Shahada, M. A. Swillam

We propose a highly sensitive optical sensor which is built from silicon nanowires. The silicon nanowires are arranged to form a ring resonator. The silicon nanowires cladding and voids are filled with the analyte. The sensor has a small footprint of 16 μm × 16.5 μm. The insertion loss of the sensor is only 0.4 dB, while it is characterized by its high sensitivity of 430 nm/RIU. As a biosensor, our device showed a 100 nm/RIU sensitivity when a thin biolayer of 10 nm thickness is attached to the silicon nanowire structures.

Other Information

Published in: Applied Physics A
License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s00339-019-2942-9

History

Language

  • English

Publisher

Springer Science and Business Media LLC

Publication Year

  • 2019

Institution affiliated with

  • Qatar University

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