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Proceedings Paper

Optical add-drop multiplexer using PBG with hexagonal-hole lattice PC slab waveguides
Author(s): Akiko Gomyo; Jun Ushida; Hirohito Yamada; Tao Chu; Satomi Ishida; Yasuhiko Arakawa
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Paper Abstract

We report on a channel-drop filter (CDF) with a mode gap of propagating mode for a photonic crystal slab that was fabricated on silicon on an insulator wafer. The results simulated with 3-dimensional finite-difference time-domain and plane-wave methods demonstrated that an index-guiding mode for a 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 for the propagating light-wave through the line defect waveguide, and it can be used as an optical filter. The filter bandwidth was varied from 1 - 8 nm with an r/a (r: hole radius, a: lattice constant) variation around the wavelength range of 1550 - 1600 nm. We fabricated a Bragg reflector with a photonic crystal line-defect waveguide and with Si-channel waveguides and obtained results of transmittance abrupt dips that come from the Bragg reflector that were measured in the transmittance spectrum. The experimental results are consistent with our theoretical analysis.

Paper Details

Date Published: 5 December 2005
PDF: 7 pages
Proc. SPIE 6050, Optomechatronic Micro/Nano Devices and Components, 60500B (5 December 2005);
Show Author Affiliations
Akiko Gomyo, NEC Corp. (Japan)
Optoelectronic Industry and Technology Development Association (Japan)
Jun Ushida, NEC Corp. (Japan)
Optoelectronic Industry and Technology Development Association (Japan)
Hirohito Yamada, NEC Corp. (Japan)
Optoelectronic Industry and Technology Development Association (Japan)
Tao Chu, Optoelectronic Industry and Technology Development Association (Japan)
Satomi Ishida, Univ. of Tokyo (Japan)
Yasuhiko Arakawa, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 6050:
Optomechatronic Micro/Nano Devices and Components
Yoshitada Katagiri, Editor(s)

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