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Conferences > Photonics > 2014 > M4A > M4A.12

Mid-IR Evanescent Field Gas Sensor Based on Silicon-on-Nitride Slot Waveguide

Babita Kumari, Ajanta Barh, R. K. Varshney, and B. P. Pal

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Abstract

We propose silicon-on-nitride slot waveguide-based evanescent field absorption sensing scheme for ammonia gas in the mid-IR wavelength. Detection down to 10 ppm is feasible with estimated evanescent field fraction (EFF) ~ 43%.

© 2014 Optical Society of America

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