標題: Efficient mode coupling technique between photonic crystal heterostructure waveguide and silica waveguides
作者: Chau, YF
Yang, TJ
Gu, BY
Lee, WD
電子物理學系
Department of Electrophysics
關鍵字: photonic crystal;silica waveguide;heterostructure waveguide;transmission efficiency
公開日期: 15-Sep-2005
摘要: We report an efficient mode coupling technique between silica waveguides (SWGs) and a planar photonic crystal heterostructure waveguide (PPCHWG) composed of two semi-infinite two-dimensional photonic crystals (PCs) with different filling fractions. By calculating the transmittance at output end of SWG, we find that the designed structures possess the merits of high coupling efficiency and relaxing fabricating tolerance. The maximal transmittance exceeds 90% at a wavelength near 1.65 mu m. The high transmission efficiency of PPCHWGs can be achieved without introducing any defect structures for optimal mode matching. Besides, the width of PPCHWGs can be flexibly adjusted via changing the separation of two component PCs in PC heterostructures. (c) 2005 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.optcom.2005.04.080
http://hdl.handle.net/11536/13272
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2005.04.080
期刊: OPTICS COMMUNICATIONS
Volume: 253
Issue: 4-6
起始頁: 308
結束頁: 314
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