A photonic crystal multimode interference wavelength demultiplexer

Insu Park; Hyun-Jun Kim; Seung-Gol Lee; El-Hang Lee

doi:10.1117/12.592648

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25 March 2005 A photonic crystal multimode interference wavelength demultiplexer

Insu Park, Hyun-Jun Kim, Seung-Gol Lee, El-Hang Lee

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Proceedings Volume 5729, Optoelectronic Integrated Circuits VII; (2005) https://doi.org/10.1117/12.592648
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

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.

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Insu Park, Hyun-Jun Kim, Seung-Gol Lee, and El-Hang Lee "A photonic crystal multimode interference wavelength demultiplexer", Proc. SPIE 5729, Optoelectronic Integrated Circuits VII, (25 March 2005); https://doi.org/10.1117/12.592648

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