Enhanced surface sensitivity in microring resonator biosensor based on subwavelength grating waveguides

Hai Yan; Lijun Huang; Xiaochuan Xu; Naimei Tang; Swapnajit Chakravarty; Ray T. Chen

doi:10.1117/12.2250408

23 February 2017 Enhanced surface sensitivity in microring resonator biosensor based on subwavelength grating waveguides

Hai Yan, Lijun Huang, Xiaochuan Xu, Naimei Tang, Swapnajit Chakravarty, Ray T. Chen

Author Affiliations +

Proceedings Volume 10081, Frontiers in Biological Detection: From Nanosensors to Systems IX; 100810G (2017) https://doi.org/10.1117/12.2250408
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Microring resonators on silicon-on-insulator substrate have been demonstrated to be promising in sensing applications. We study a microring resonator biosensor based on a novel subwavelength grating (SWG) waveguide structure, which consists of periodic silicon pillars in the propagation direction with a subwavelength period. In this structure, effective sensing region includes not only the top and side of the waveguide, but also the space in between the silicon pillars which is on the path of the propagation mode. This leads to greatly increased bulk refractive index sensitivity as well as extended surface sensing region with constantly high surface sensitivity.

Conference Presentation

Citation Download Citation

Hai Yan, Lijun Huang, Xiaochuan Xu, Naimei Tang, Swapnajit Chakravarty, and Ray T. Chen "Enhanced surface sensitivity in microring resonator biosensor based on subwavelength grating waveguides", Proc. SPIE 10081, Frontiers in Biological Detection: From Nanosensors to Systems IX, 100810G (23 February 2017); https://doi.org/10.1117/12.2250408

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available