1995 Fiscal Year Final Research Report Summary
Development of Highly Parallel Optical Multiplex Computing Systems
| Project/Area Number |
05558025
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
計算機科学
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| Research Institution | Tohoku University |
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Principal Investigator |
HIGUCHI Tatsuo Tohoku University, Graduate School of Information Sciences, Professor, 大学院情報科学研究科, 教授 (20005317)
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| Co-Investigator(Kenkyū-buntansha) |
AOKI Takafumi Tohoku University, Graduate School of Information Sciences, Research Associate, 大学院情報科学研究科, 助手 (80241529)
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| Project Period (FY) |
1993 – 1995
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| Keywords | Optical Computing / Optical Computers / Opto-Electronic Integrated Circuits / Wavelength Division Multiplexing / Set-Valued Logic / Multiple-Valued Logic |
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| Research Abstract |
In this project, we have investigated the potential of optical multiplex computing systems-parallel computing systems that employ optical wavelength components as multiplexable information carries-for overcoming interconnection problems in highly parallel computing architectures.
1.A systematic method for designing optical multiplex computing systems using set-valued logic gates was established. On the basis of the above result, an optical parallel adder using three wavelengths was designed and implemented with discrete opto-electronic components to demonstrate the possibility of wavelength-space parallel processing.
2.The impact of optical multiplex computing on the design of highly parallel interconnection networks was investigated. Optimal packing of interconnection topology into wavelength channels was studied for a wide class of interconnection networks defined by BPC permutations. It was shown that their average interconnection density can be reduced by the factor of 1/gamma using gamma wavelength components. To demonstrate the impact of the proposed method, an 8-input 4-wavelength optical bitonic sorting network was designed and successfully implemented.
3.As a key component for integrated optical multiplex computing, a one-chip wavelength detector employing dielectric multilayr thin-film filters was fabricated, demonstrating successful discrimination of four wavelength components within 635-830nm range. Through experimental study, it was estimated that 8-wavelength multiplexing is possible at the present state of technology. This number offers the potential for reducing area complexity of interconnection networks by the factor of 1/64 on an average.
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