Transmission characteristics of 90 degrees bent photonic crystal waveguides

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Title:	Transmission characteristics of 90 degrees bent photonic crystal waveguides
Authors:	Lee KY Tsai CC Weng TC Kuo YL Kao CW Chen KY Lin YJ
Contributors:	電機系
Keywords:	90 degrees (L-shaped) bent photonic crystal waveguides transmission efficiency
Date:	2006
Issue Date:	2009-11-23 10:25:21 (UTC+8)
Abstract:	There are several key factors that affect the transmission characteristics of the 90 degrees (L-shaped) bent photonic crystal waveguides. The first factor is the direct coupling efficiency from the incident lights into the waveguides. The second one is the bandgap deviations of the photonic crystals. And the third factor is the optical reflections in the bent corners. In this article, we compare three types of L-shaped bent photonic crystal waveguides. One is the original type, which has an abrupt right-angle bend. Another is an improved 90 degrees bend with a 45 degrees-mirror. The other is an L-shaped bent photonic crystal waveguide with a 45 degrees-transitional section. We investigate their respective frequency responses and observe the improvements in the total transmission efficiencies provided by the latter types.
Relation:	FIBER AND INTEGRATED OPTICS Volume: 25 Issue: 1 Pages: 29-40
Appears in Collections:	[Department of Electrical Engineering ] journal articles

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