Optical amplifier using nonlinear nanodefect cavity in photonic crystal
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概要
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We have proposed a new optical amplifier in a photonic crystal. The amplifier consists of a nonlinear nanodefect cavity and a cross waveguide. The input–output characteristics have been simulated for the amplifier with three- or four-port cross waveguide in a two-dimensional photonic crystal by the finite-difference time-domain method. In the amplifier, a signal light can be amplified by an energy transfer from a control light to the signal light at the nonlinear nano-defect cavity. The calculated amplification factor of the amplifier was $2.33\times 10^{4}$. When optical transistor was used with an amplifier with a three-port cross waveguide in a two-dimensional photonic crystal, the calculated switching rate, the on–off ratio and the amplification factor of the transistor were 12 Gbit/s, $1.95\times 10^{5}$ and $2.29\times 10^{4}$, respectively. The transistor can work well even under a low power input in the signal port and can be utilized as a small amplifier and an optical sensor with a fast response.
- 2006-10-15
著者
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Fukui Masuo
Department Of Electrical And Electronic Engineering Faculty Of Engineering The University Of Tokushi
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FUJII Masamitsu
Department of Optical Science and Technology, The University of Tokushima
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Haraguchi Masanobu
Department Of Electrical And Electronic Engineering Faculty Of Engineering The University Of Tokushi
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Okamoto Hiroyuki
Department Of Agricultural Chemistry Kyoto University
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Kawashita Yoshiyuki
Department of Optical Science and Technology, The University of Tokushima, 2-1 Minamijosanjima, Tokushima 770-8506, Japan
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Fujii Masamitsu
Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima, 2-1 Minamijosanjima, Tokushima 770-8506, Japan
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Fukui Masuo
Department of Systems and Control Engineering, Anan National College of Technology, 265 Aoki Minobayashi, Anan, Tokushima 774-0017, Japan
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Fujii Masamitsu
Department of Ophthalmology, Shimane Medical University
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