Self-imaging phenomena in multi-mode photonic crystal line-defect waveguides: application to wavelength de-multiplexing

Title
Self-imaging phenomena in multi-mode photonic crystal line-defect waveguides: application to wavelength de-multiplexing
Authors
Park, S.G.; O, B.H.; Lee, S.G.
Keywords
FABRICATION
Issue Date
2004-11
Publisher
OPTICAL SOC AMER
Abstract
We show that the self-imaging principle still holds true in multi-mode photonic crystal (PhC) line-defect waveguides just as it does in conventional multi-mode waveguides. To observe the images reproduced by this self-imaging phenomenon, the finite-difference time-domain computation is performed on a multi-mode PhC line-defect waveguide that supports five guided modes. From the computed result, the reproduced images are identified and their positions along the propagation axis are theoretically described by self-imaging conditions which are derived from guided mode propagation analysis. We report a good agreement between the computational simulation and the theoretical description. As a possible application of our work, a photonic crystal 1-to-2 wavelength de-multiplexer is designed and its performance is numerically verified. This approach can be extended to novel designs of PhC devices. (C) 2004 Optical Society of America.
URI
http://dspace.inha.ac.kr/handle/10505/20407
ISSN
1094-4087
Appears in Collections:
College of Engineering(공과대학) > Information and Communication Engineering (정보통신공학) > Journal Papers, Reports(정보통신공학 논문, 보고서)
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