2015 Fiscal Year Final Research Report
Study on fiber-optic receivers with side-surface interfaces
| Project/Area Number |
25420346
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Waseda University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 国際情報交換 / 国際会議講演 / 学術誌掲載 |
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| Outline of Final Research Achievements |
First, new waveguide structures with a scattering layer and distorted shape were proposed as a light concentrator. The transmission efficiency corresponding to the ratio of the received light to input light power through side-surface of the waveguide was improved, but large loss occurs due to excess scatterings along waveguide. To suppress the scattering, fiber-optic concentrator was proposed. The efficiency of more than 1%-10% was successfully obtained along a ~5 meter-long fiber. Also, omnidirectional photodetectors based on this idea were designed. In addition to above mentioned simple concentrators, optical probes were proposed as one of applications. The light probe of 5-10 cm length, in which both light source and photodetector embedded, enabled to detect the objects around the fiber through the side-face interface. Finally, nanosized applications of optical waveguides were also studied. Waveguide structures and materials were designed to optimize the transmission efficiency.
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| Free Research Field |
工学
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