Comparative sensitivity analysis of integrated optical waveguides for near-infrared volatile organic compounds with 1ppb detection

Wei-Cheng Lai; Yi Zou; Swapnajit Chakravarty; Liang Zhu; Ray T. Chen

doi:10.1117/12.2040579

8 March 2014 Comparative sensitivity analysis of integrated optical waveguides for near-infrared volatile organic compounds with 1ppb detection

Wei-Cheng Lai, Yi Zou, Swapnajit Chakravarty, Liang Zhu, Ray T. Chen

Author Affiliations +

Proceedings Volume 8990, Silicon Photonics IX; 89900Z (2014) https://doi.org/10.1117/12.2040579
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

We compared different on-chip silicon waveguide based absorption sensors for the detection of xylene in water in nearinfrared with detection limit down to 1ppb. Strip waveguide, slot waveguide and PC-based chip integrated optical absorption spectroscopy devices are compared in near-infrared. PCW utilizes slow light effect to enhance absorbance and is most sensitive while slot waveguide strengthens light-matter interaction in a narrow low index slot by a factor up to 10 and performs better than a strip waveguide. The results provide a route for enhanced sensitivity via absorption spectroscopy while retaining device miniaturization.

Citation Download Citation

Wei-Cheng Lai, Yi Zou, Swapnajit Chakravarty, Liang Zhu, and Ray T. Chen "Comparative sensitivity analysis of integrated optical waveguides for near-infrared volatile organic compounds with 1ppb detection", Proc. SPIE 8990, Silicon Photonics IX, 89900Z (8 March 2014); https://doi.org/10.1117/12.2040579

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