NDLI: Decoupling efficiency of multiple coupled photonic crystal waveguides

Content Provider	IEEE Xplore Digital Library
Author	Yu, Tianbao Lingjuan He Jun Zhang Liguang Fang Ping Wu
Copyright Year	2009
Description	Author affiliation: Department of Physics, Nanchang University, 330031, China (Yu, Tianbao; Lingjuan He; Jun Zhang; Liguang Fang; Ping Wu)
Abstract	We investigate decoupling characteristics and efficiency of multiple coupled photonic crystal waveguides (M-CPCWs) using coupled mode theory on the basis of self-imaging principle. The three-, four- and eight-CPCWs are selected as the typical structures to discuss the general characteristics of the M-CPCWs. It is found that around the frequency where the multiple guided modes are almost degenerate, which leads to that the power transfer in the M-CPCWs is eliminated for any entrance. The frequency region for decoupling is insensitive to the number of coupled waveguides with the extinction ratios higher than −15dB. An optimization way by introducing a defect mode is utilized to enhance the decoupling efficiency. The simulation results are based on the finite-difference time-domain method. The decoupling of the M-CPCWs exhibit many advantages and may have practical applications in photonic integrated circuits.
Starting Page	1
Ending Page	11
File Size	806082
Page Count	11
File Format	PDF
ISBN	9781557528773
DOI	10.1364/ACP.2009.FX6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-02
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	OSA
Subject Keyword	Photonic integrated circuits Photonic crystals Electromagnetic waveguides Couplers Interference Semiconductor waveguides Optical waveguides Integrated photonics Decoupling Waveguide theory Frequency Waveguide couplers Periodic structures
Content Type	Text
Resource Type	Article

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