Electrorefractive Effect in GaInNAs/GaAs Five-Layer Asymmetric Coupled Quantum Well
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概要
- 論文の詳細を見る
A GaInNAs/GaAs five-layer asymmetric coupled quantum well (FACQW) in the 1.3-μm-wavelength region was proposed and theoretically analyzed. The valence band structures of the FACQW were analyzed using the Luttinger–Kohn Hamiltonian based on the $k\cdot p$ perturbation theory and a nonvariational method. The GaInNAs/GaAs FACQW can exhibit a unique behavior of the quantum confined Stark effect, leading to a large electrorefractive index change ($\Delta n/\Delta F = 3.9 \times 10^{-4}$ cm/kV) at a small electric field in a wide-transparency-wavelength region far from the absorption edge. This characteristic is comparable to InGaAs/InAlAs and InGaAsP FACQWs operated in the 1.55-μm-wavelength region. The GaInNAs/GaAs FACQW is expected to realize ultrawide-band, ultrafast optical modulators and switches and other functional devices based on the phase shift in the 1.3-μm-wavelength region. The driving voltage of a 1 mm-phase modulator is estimated to be 0.4 V.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2009-04-25
著者
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ARAKAWA Taro
Graduate School of Engineering, Yokohama National University
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TADA Kunio
Graduate School of Engineering, Kanazawa Institute of Technology
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Arakawa Taro
Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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Toya Takahiro
Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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Tada Kunio
Graduate School of Engineering, Kanazawa Institute of Technology, Atago Toyo Building, 1-3-4 Atago, Minato-ku, Tokyo 105-0002, Japan
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Sawai Yutaka
Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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Fukuoka Masayasu
Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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Arakawa Taro
Graduate School of Engineering Yokohama National Univ
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