Title :
Refractive index sensing characteristics of alternate Au-Ag surface gratings on optical waveguides
Author :
Tripathi, Saurabh Mani ; Kumar, Arun ; Marin, Emmanuel ; Meunier, Jean-Pierre
Author_Institution :
Physics Department, Indian Institute of Technology Delhi, New Delhi - 110016, India
Abstract :
We present a theoretical study of the ambient refractive index sensing characteristics of Au-Ag surface gratings written on a planar waveguide. Exact coupled-mode-theory has been used to consider the power coupling from guided mode to Surface-Plasmon-Polariton. A very high sensitivity ∼1360 nm/RIU has been observed at metal thickness ∼14 nm.
Keywords :
Gratings; Optical planar waveguides; Optical refraction; Optical sensors; Optical surface waves; Optical variables control; Optical waveguide theory; Optical waveguides; Refractive index; Surface waves;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
