| Project/Area Number |
18560030
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | University of Tsukuba |
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Principal Investigator |
WATANABE Yoshinori University of Tsukuba, Graduate School of Pure and Applied Sciences, Assistant Professor (40375407)
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| Co-Investigator(Kenkyū-buntansha) |
ASAKAWA Kiyoshi University of Tsukuba, Graduate School of Pure and Applied Sciences, Professor (20375405)
SUGIMOTO Yoshimasa National Institute of Advanced Industrial Science and Technology, UItrafast Photonic Devices Laboratory, Researcher (60415784)
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| Project Period (FY) |
2006 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,290,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2006: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Photonic Ctystal / Optical Switch / Optical Waveguide |
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| Research Abstract |
Two dimensional (2D) photonic crystal (PC) slab waveguides are attractive candidate to develop all-optical integrated circuits for future high-speed photonic network system. For developing high-functionality devices, the design of waveguide components is crucial in the PC technology. A topology optimization (TO) method is an efficient optimization algorithm that creates desired material distribution for customizing waveguide components with expected functionality. We employed the TO method to design waveguide components in air-bridge-type, 2D PC slabs. Bu fabricating GaAs-based PC slabs, we successfully demonstrated that the TO design method has remarkably contributed to achievement of intersection, bend, directional coupler and Y-junction waveguides with wide bandwidth and transmittance comparable to that of the straight waveguide. The results are encouraging for the development of a photonic digital processor as well as ultra-fast, all-optical devices based on 2D PC slab waveguides.
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