Journal
APPLIED OPTICS
Volume 51, Issue 23, Pages 5735-5742Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.51.005735
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Funding
- National Natural Science Foundation of China [11074069, 61176116]
- Hunan Provincial Science and Technology Project of China [2012FJ4121]
- Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
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We present a procedure to generate slow light with a large group index, wideband, and low dispersion in our suggested photonic crystal waveguide. By modulation of the declinations in the first two rows of air holes, the group index, the bandwidth, and the dispersion can be tuned effectively. Utilizing the two-dimensional plane wave expansion method (PWE) and the finite-difference time-domain method (FDTD), we demonstrate slow light with the group indices of 23, 35, and 45, respectively, while restricting the group-index variation within a 10% range. We accordingly attain an available bandwidth of 40.7, 23.7, and 5.1 nm, respectively. Meanwhile, the normalized delay-bandwidth product stays around 0.45, with minimal dispersion less than 0.2 (ps(2)/m) for all the cases. (c) 2012 Optical Society of America
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