Study of the photonic crystal waveguide based on 2D compound lattice structure |
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Authors: | Chao-jun Wu Yan-ping Li and Zi-yu Wang |
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Affiliation: | WU Chao-jun,LI Yan-ping,, WANG Zi-yu State Key Laboratory on Advanced Optical Communication Systems , Networks,School of Electronics Engineering ,Computer Science,Peking University,Beijing 100871,China |
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Abstract: | By employing 2D plane wave expansion (PWE) and finite difference time domain (FDTD) methods, a photonic crystal waveguide
(PCW) based on the compound square lattice structure is presented. Band-gap can be observed for TM polarization and compared
with the simple lattice structure based on the same material, the band-gap is increased by 62.7%. By optimizing the parameters
we get the PCW with the propagation only near the wavelength of 1.55 μm and a flat group index curve in a wide wavelength
range of 40 nm. And the group velocity dispersion compensation can be realized by the structure optimization. The results
provide a reference for the study and application of photonic crystal waveguide based on the compound lattice structure. |
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Keywords: | |
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