Dual wavelength demultiplexing by coupling and decoupling of photonic crystal waveguides

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Title:	Dual wavelength demultiplexing by coupling and decoupling of photonic crystal waveguides
Authors:	Chien FSS;Hsu YJ;Hsieh WF;Cheng SC
Contributors:	物理系
Date:	2004
Issue Date:	2009-11-27 11:21:21 (UTC+8)
Abstract:	We demonstrate that the fundamental mode of the two coupled photonic crystal waveguides (PCWs) can be odd parity in a triangular photonic crystal and their dispersion curves do intersect. Thus, the PCWs are decoupled at the crossing point. By employing the decoupling at the crossing-point frequency and ultra short coupling length for another frequency, we designed a dual-wavelength demultiplexer with a coupling length of only two wavelengths and output power ratio as high as 15 dB. A loop-shape PCW is adapted to eliminate the backward energy flow. (C) 2004 Optical Society of America.
Relation:	OPTICS EXPRESS Volume: 12 Issue: 6 Pages: 1119-1125
Appears in Collections:	[Department of Physics ] journal articles

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