Design and Simulation of Silicon Waveguide Optical Circulator Employing Nonreciprocal Phase Shift
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概要
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In this paper, we propose an optical circulator employing a nonreciprocal phase shift with a silicon waveguide. Two types of optical circulators are investigated, a perfectly circulating four-port optical circulator and a three-port optical circulator. Nonreciprocal characteristics are obtained owing to the first-order magneto-optic effect of a magneto-optic garnet directly bonded onto a silicon guiding layer. The waveguide structure is designed by numerical simulations. When we use a 220-nm-thick and 500-nm-wide silicon waveguide core, the required length of the nonreciprocal phase shifter is 348.3 μm at a wavelength of 1.55 μm. The four-port optical circulator exhibits a crosstalk below $-20$ dB in a wavelength range between 1.54 and 1.56 μm. The three-port optical circulator exhibits a crosstalk below $-20$ dB in a wavelength range between 1.53 and 1.57 μm. The total length of both types of optical circulators is approximately 420 μm.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2010-05-25
著者
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Mizumoto Tetsuya
Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Takei Ryohei
Graduate School of Science and Engineering, Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, 2-12-1-S3-11 Ookayama, Meguro, Tokyo 152-8552, Japan
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Ryohei Takei
Graduate School of Science and Engineering, Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, 2-12-1-S3-11 Ookayama, Meguro, Tokyo 152-8552, Japan
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Tetsuya Mizumoto
Graduate School of Science and Engineering, Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, 2-12-1-S3-11 Ookayama, Meguro, Tokyo 152-8552, Japan
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