20 December 2016 Slow light photonic crystal waveguides with large delay-bandwidth product
Mohammad Pourmand, Arash Karimkhani, Mohammad Kazem Moravvej-Farshi
Author Affiliations +
Abstract
We present a slow light photonic crystal waveguide. In our structure design, we displace some air holes perpendicular to the line defect. By tuning the group index, ng, from 11.8 to 40, we attain a wide bandwidth varying from 15.9 to 46.9 nm. The group velocity dispersion is kept below 1020  m1s2, and the normalized delay—bandwidth product of 0.448—is attained at ng=14.8 by this structure. This study uses plane wave expansion and finite-difference time domain methods.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2016/$25.00 © 2016 SPIE
Mohammad Pourmand, Arash Karimkhani, and Mohammad Kazem Moravvej-Farshi "Slow light photonic crystal waveguides with large delay-bandwidth product," Optical Engineering 55(12), 123108 (20 December 2016). https://doi.org/10.1117/1.OE.55.12.123108
Received: 9 July 2016; Accepted: 28 November 2016; Published: 20 December 2016
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Cited by 7 scholarly publications.
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KEYWORDS
Slow light

Dispersion

Waveguides

Photonic crystals

Optical engineering

Finite-difference time-domain method

Light wave propagation

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