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Proceedings Paper

Improved efficiency and enhanced slow light performance in photonic crystal waveguides using rectangular unit cells
Author(s): Nagesh Janrao; Rukhsar Zafar; Sanjeev Kumar Metya; Vijay Janyani
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Paper Abstract

We propose and evaluate a 2-D photonic crystal waveguide with a single line defect that uses rectangular holes adjacent to waveguide, arranged in a hexagonal geometry. With an aspect ratio of 2:1 in rectangular holes, we obtained transmission efficiency of 94% which is larger than previously reported for its circular and elliptical counterpart. By controlling the single parameter of rectangular air hole, the slow light performance of the improved efficiency structure is analyzed. In the irregular waveguide, slow light is achieved with low group velocity and very low group velocity dispersion over large signal bandwidth of 23 GHz. The normalized delay bandwidth product (NDBP) for the proposed design is also measured and compared with NDBP of waveguide when instead of rectangular holes, elliptical holes is used adjacent to waveguide with same aspect ratio 2:1. Improvement in normalized delay bandwidth product is obtained for our proposed design when elliptical air holes of aspect ratio 2:1 adjacent to waveguide are replaced by rectangular holes of same aspect ratio.

Paper Details

Date Published: 28 January 2013
PDF: 8 pages
Proc. SPIE 8760, International Conference on Communication and Electronics System Design, 87602B (28 January 2013); doi: 10.1117/12.2012497
Show Author Affiliations
Nagesh Janrao, Malaviya National Institute of Technology (India)
Rukhsar Zafar, Malaviya National Institute of Technology (India)
Sanjeev Kumar Metya, Malaviya National Institute of Technology (India)
Vijay Janyani, Malaviya National Institute of Technology (India)

Published in SPIE Proceedings Vol. 8760:
International Conference on Communication and Electronics System Design
Vijay Janyani; M. Salim; K. K. Sharma, Editor(s)

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