標題: Coupling technique for efficient interfacing between silica waveguides and planar photonic crystal circuits
作者: Chau, YF
Yang, TJ
Lee, WD
電子物理學系
Department of Electrophysics
公開日期: 20-Dec-2004
摘要: We describe a two-step-size tapered structure with one defect pair that can markedly enhance the coupling efficiency at the entrance and exit terminals of a planar photonic crystal (PPC) waveguide. PPC waveguides are composed of circular dielectric rods set in two-dimensional square lattices. On the basis of our simulations, we found that the optimized scheme maximizes the power transmission above 90% at a wavelength of 1.55 mum. Besides, one can control the central frequency for optical communications by determining this defect configuration in an optimization procedure. Moreover, by properly adjusting the defect radii in PPC tapers, one can use the PPC circuit as a good reflector. (C) 2004 Optical Society of America.
URI: http://dx.doi.org/10.1364/AO.43.006656
http://hdl.handle.net/11536/25546
ISSN: 0003-6935
DOI: 10.1364/AO.43.006656
期刊: APPLIED OPTICS
Volume: 43
Issue: 36
起始頁: 6656
結束頁: 6663
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