| Project/Area Number |
16360180
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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, Associate Professor, 理工学部, 助教授 (90327677)
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| Co-Investigator(Kenkyū-buntansha) |
OBARA Minoru Keio University, Faculty of Science and Technology, Professor, 理工学部, 教授 (90101998)
KANNARI Fumihiko Keio University, Faculty of Science and Technology, Professor, 理工学部, 教授 (40204804)
SAIKI Toshiharu Keio University, Faculty of Science and Technology, Associate Professor, 理工学部, 助教授 (70261196)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 2005: ¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 2004: ¥8,500,000 (Direct Cost: ¥8,500,000)
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| Keywords | Waveguide / Planar Lightwave Circuit / Arrayed-waveguide grating / Dispersion Compensation / Time-to-space Conversion / Optical Pulse Synthesizer / Photonic Network / Optical Signal Processing / パルスシンセサイザ |
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| Research Abstract |
Complicated photonic signal processing without electrical processing is strongly required for the next generation photonic network using wavelength division multiplexing technology. The purpose of this study was the realization of high-performance and high-speed photonic processing circuits integrated with small phase modulators and amplitude modulators with low-phase error waveguides.
1.We have realized arbitrary wave form generator consisted of the arrayed-waveguide grating with a channel spacing of 12.5 GHz, 30 channels, and a crosstalk of less than -20 dB ; and amplitude modulators with an extinction ratio of 20 dB, and the maximum phase modulation of 2π were integrated to each channel. The feedback system which monitored the beat wave form between adjacent channel signals was configured to generate arbitrary waveform. The system could generate the transform limited pulse.
2.We have fabricated the monolithic dispersion compensation circuit and successfully demonstrated the recovery of the degraded waveform of the 40 Gbit/s signals.
3.The multi-stage arrowhead type arrayed-waveguide grating was proposed and fabricated. The loss at the center frequency was 7.5 dB for three-stage type, and was 17 dB for five-stage one. We have also fabricated the high-resolution arrayed-waveguide grating with a channel spacing of 25 GHz, and the wide range arrayed-waveguide grating with a channel spacing of 100 GHz.
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