A Highly Efficient Optical Add-Drop Multiplexer Using Photonic Band Gap with Hexagonal Hole Lattice Photonic Crystal Slab Waveguides(Micro/Nano Photonic Devices,<Special Section>Microoptomechatronics)
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概要
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We report on a channel drop filter with a mode gap in the propagating mode of a photonic crystal slab that was fabricated on silicon on an insulator wafer. The results, simulated with the 3-dimensional finite-difference time-domain and plane-wave methods, demonstrated that an index-guiding mode for the line defect waveguide of a photonic crystal slab has a band gap at wave vector k=0.5 for a mainly TM-like light-wave. The mode gap works as a distributed Bragg grating reflector that propagates the light-wave through the line defect waveguide, and can be used as an optical filter. The filter bandwidth was varied from 1-8nm with an r/a (r: hole radius, a: lattice constant) variation around the wavelength range of 1550-1600nm. We fabricated a Bragg reflector with a photonic crystal line-defect waveguide and Si-channel waveguides and by measuring the transmittance spectrum found that the Bragg reflector caused abrupt dips in transmittance. These experimental results are consistent with the results of the theoretical analysis described above. Utilizing the Bragg reflector, we fabricated channel dropping filters with photonic crystal slabs connected between channel waveguides and demonstrated their transmittance characteristics. They were highly drop efficient, with a flat-top drop-out spectrum at a wavelength of 1.56μm and a drop bandwidth of 5.8nm. Results showed that an optical add-drop multiplexer with a 2-D photonic crystal will be available for application in WDM devices for photonic networks and for LSIs in the near future.
- 社団法人電子情報通信学会の論文
- 2007-01-01
著者
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ARAKAWA Yasuhiko
Nanoelectronics Collaborative Research Center, Institute of Industrial Science, and Research Center
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Ushida Jun
Mirai-selete
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Ushida Jun
Fundamental And Environmental Research Laboratories Nec Corporation:optoelectronic Industry And Tech
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Ushida Jun
Fundamental And Environmental Research Laboratories Nec Corporation
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GOMYO Akiko
MIRAI-Selete
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Ishida Satomi
Univ. Of Tokyo Tokyo Jpn
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GOMYO Akiko
Fundamental and Environmental Research Laboratories, NEC Corporation
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CHU Tao
Fundamental and Environmental Research Laboratories, NEC Corporation
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YAMADA Hirohito
Tohoku University
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ISHIDA Satomi
Nanoelectronics Collaborative Research Center, IIS & RCAST, University of Tokyo
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Chu Tao
Nec Corp.
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Arakawa Yasuhiko
Univ. Of Tokyo
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Arakawa Yasuhiko
Nanoelectronics Collaborative Research Center (ncrc) Institute Of Industrial Science (iis) The Unive
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Gomyo Akiko
Fundamental And Environmental Research Laboratories Nec Corporation:optoelectronic Industry And Tech
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Gomyo Akiko
Fundamental And Environmental Research Laboratories Nec Corporation
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YAMADA Hirohito
Optoelectronic Industry and Technology Development Association (OITDA)
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Yamada Hirohito
Tohoku Univ.
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Yamada Hirohito
Kansai Electronics Research Laboratory Nec Corporation
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Ishida Satomi
Nanoelectronics Collaborative Research Center (NCRC), IIS & RCAST, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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