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http://dx.doi.org/10.3807/COPP.2019.3.5.438

Wideband Slow Light in a Line-defect Annular Photonic-crystal Waveguide  

Kuang, Feng (College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications (NJUPT))
Li, Feng (New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications (NJUPT))
Yang, Zhihong (New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications (NJUPT))
Wu, Hong (New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications (NJUPT))
Publication Information
Current Optics and Photonics / v.3, no.5, 2019 , pp. 438-444 More about this Journal
Abstract
In this theoretical study, a line-defect photonic-crystal waveguide hosted in an annular photonic crystal was demonstrated to provide high-performance slow light with a wide band, low group-velocity dispersion, and a large normalized delay-bandwidth product. Combined with structural-parameter optimization and selective optofluid injection, the normalized delay-bandwidth product could be enhanced to a large value of 0.502 with a wide bandwidth of 58.4 nm in the optical-communication window, for a silicon-on-insulator structure. In addition, the group-velocity dispersion is on the order of $10^5$ ($ps^2/km$) in the slow-light region, which could be neglected while keeping the signal transmission unchanged.
Keywords
Annular photonic crystals; Slow light; Normalized delay-bandwidth product;
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Times Cited By KSCI : 1  (Citation Analysis)
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