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Optical Engineering

Waveguide and guided-wave devices consisting of heterostructured photonic crystals
Author(s): Yasuo Ohtera; Hiroyuki Ohkubo; Kenta Miura; Takashi Sato; Takayuki Kawashima; Shojiro Kawakami
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Paper Abstract

We report a strategy for the industrialization of photonic-crystal-based optical devices, starting with a review of the requirements for passive photonic crystal components. Although they have remarkable properties, such components are difficult to couple to/from optical fibers and have a relatively large propagation loss. We present an approach for meeting the requirements by using heterostructured photonic crystals fabricated by the autocloning technology. A low-loss, simple structured waveguide and sophisticated functional blocks (such as a resonator) can be integrated by a simple process. We first prepare a substrate patterned and corrugated by electron beam lithography and dry etching. Ta2O5/SiO2 multilayers are repeatedly deposited on the substrate, and no other process is needed to complete the chip. After dicing and polishing, the waveguide can be butt-jointed with an optical fiber, and the loss is estimated as 0.1 dB/mm. A resonator with Q =11,700 is also demonstrated. Recent progress and the future outlooks for the technology are also discussed.

Paper Details

Date Published: 1 May 2004
PDF: 8 pages
Opt. Eng. 43(5) doi: 10.1117/1.1695407
Published in: Optical Engineering Volume 43, Issue 5
Show Author Affiliations
Yasuo Ohtera, Tohoku Univ. (Japan)
Hiroyuki Ohkubo, Tohoku Univ. (Japan)
Kenta Miura, Tohoku Univ. (Japan)
Takashi Sato, Tohoku Univ. (Japan)
Takayuki Kawashima, Tohoku Univ. (Japan)
Shojiro Kawakami, Tohoku Univ. (Japan)

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