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Photonic crystal slab waveguide-based infiltrated liquid sensors: design and analysis

J. Nanophoton. 5, 053505 (Apr 12, 2011); http://dx.doi.org/10.1117/1.3574182

Shruti and Ravindra K. Sinha

University of Delhi, Faculty of Technology, Delhi College of Engineering, TIFAC Centre of Relevance and Excellence in Fiber Optics and Optical Communication, Department of Applied Physics, Bawana Road, Delhi-110042, India i_shrutisingh@yahoo.co.in

R. Bhattacharyya

Formerly at National Physical Laboratory, New Delhi-110060, India

Infiltrated liquid sensors based on a 2D photonic crystal waveguide were devised. This waveguide is designed by taking into account lowering of the radius of the central air holes in a single row and the optical resonance shifts due to refractive index change of these holes by selectively filling with different liquids. The transmission spectrum of the infiltrated liquid sensor was obtained with the use of a finite difference time domain method. At the working wavelength of 1550 nm, the waveguide mode gap edge shifts with sensitivity of 200 nm per refractive index unit. The mode gap shifts are consistent with dispersion diagrams.

© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

History
Received Jul 30, 2010
Accepted Mar 15, 2011
Revised Mar 11, 2011
Published online Apr 12, 2011
Citation
Shruti, Ravindra K. Sinha and R. Bhattacharyya, "Photonic crystal slab waveguide-based infiltrated liquid sensors: design and analysis", J. Nanophoton. 5, 053505 (Apr 12, 2011); http://dx.doi.org/10.1117/1.3574182

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