Full Three-Dimensional Photonic Bandgap Crystals at Near-Infrared Wavelengths

Author:

Noda Susumu1,Tomoda Katsuhiro1,Yamamoto Noritsugu2,Chutinan Alongkarn1

Affiliation:

1. Department of Electronic Science and Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan.

2. Electrotechnical Laboratory, Agency of Industrial Science and Technology (AIST), Ministry of International Trade and Industry (MITI), 1-1-4, Umezono, Tsukuba, Ibaraki, 305-8568, Japan.

Abstract

An artificial crystal structure has been fabricated exhibiting a full three-dimensional photonic bandgap effect at optical communication wavelengths. The photonic crystal was constructed by stacking 0.7-micrometer period semiconductor stripes with the accuracy of 30 nanometers by advanced wafer-fusion technique. A bandgap effect of more than 40 decibels (which corresponds to 99.99% reflection) was successfully achieved. The result encourages us to create an ultra-small optical integrated circuit including a three-dimensional photonic crystal waveguide with a sharp bend.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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