| Project/Area Number |
18360175
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Keio University |
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Principal Investigator |
TSUDA Hiroyuki Keio University, Faculty of Science and Technology, Professor (90327677)
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| Co-Investigator(Kenkyū-buntansha) |
OBARA Minoru Keio University, Faculty of Science and Technology, Professor (90101998)
KANNARI Fumihiko Keio University, Faculty of Science and Technology, Professor (40204804)
SAIKI Toshiharu Keio University, Faculty of Science and Technology, Associate Professor (70261196)
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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 |
¥16,910,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2007: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2006: ¥6,900,000 (Direct Cost: ¥6,900,000)
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| Keywords | waveguide / planar lightwave circuit / arrayed-waveguide grating / dispersion compensator / time-to-space conversion / optical pulse synthesizer / photonic network / optical signal processing / フォロニックネットワーク |
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| Research Abstract |
The purpose of the project is to develop high-resolution optical circuit for next generation photonic networks. We have realized small bend structure for silica planar lightwave circuits. It had deep trenches along core region and they were filled with low-refractive index materials ; therefore, the optical confinement was increased and low-loss small bend was provided. We fabricated small arrayed-waveguide grating using the proposed structure, it had 8 output channels with a frequency spacing of 100 GHz. The insertion loss was 4. 47 dB, the polarization dependent loss was 0.25 dB, and the crosstalk was 26.3 dB, respectively. The arrayed-waveguide grating using integrated loop mirrors was developed. The cannel spacing, the polarization dependent loss, and the adjacent crosstalk were 10.9 dB, 0.1 dB, and 8.2 dB, respectively.
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