| Presentation | 2009-08-20 Property Improvement of InGaAs/InAlAs Five-layer Asymmetric Coupled Quantum Well Motoki USHIGOME, Taro ARAKAWA, Kunio TADA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Five-layer Asymmetric Coupled Quantum Well (FACQW) is a potential tailored quantum well suited for high-performance optical modulators and switches. InGaAs/InAlAs FACQW Mach-Zehnder optical modulators were fabricated by molecular beam epitaxy and low-voltage DC operation (V_πL=1.2Vmm) at 1.55μm was obtained. The large refractive change is mainly due to the unique quantum confined Stark effect (QCSE) of the FACQW. In addition, we redesigned the FACQW structure to reduce the operation voltage. As a result, a new FACQW structure with lower absorption loss and lower operation voltage was found. The electrorefractive effect of the new FACQW structure was theoretically discussed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Quantum Well / InGaAs / Five-layer Asymmetric Coupled Quantum Well / Optical Modulator / Optical Switch / Electrorefractive Effect |
| Paper # | EMD2009-26,CPM2009-50,OPE2009-74,LQE2009-33 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 2009/8/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Lasers and Quantum Electronics (LQE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Property Improvement of InGaAs/InAlAs Five-layer Asymmetric Coupled Quantum Well |
| Sub Title (in English) | |
| Keyword(1) | Quantum Well |
| Keyword(2) | InGaAs |
| Keyword(3) | Five-layer Asymmetric Coupled Quantum Well |
| Keyword(4) | Optical Modulator |
| Keyword(5) | Optical Switch |
| Keyword(6) | Electrorefractive Effect |
| 1st Author's Name | Motoki USHIGOME |
| 1st Author's Affiliation | Graduate School of Eng., Yokohama National Univ.() |
| 2nd Author's Name | Taro ARAKAWA |
| 2nd Author's Affiliation | Graduate School of Eng., Yokohama National Univ. |
| 3rd Author's Name | Kunio TADA |
| 3rd Author's Affiliation | Graduate School of Eng., Kanazawa Institute of Technology |
| Date | 2009-08-20 |
| Paper # | EMD2009-26,CPM2009-50,OPE2009-74,LQE2009-33 |
| Volume (vol) | vol.109 |
| Number (no) | 176 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |