2004 Fiscal Year Final Research Report Summary
Study on Sensing Head for Selfmixing Laser Doppler Velocimeter
| Project/Area Number |
15560307
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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 |
Electron device/Electronic equipment
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| Research Institution | Tokai University |
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Principal Investigator |
SHIBUYA Takehisa Tokai University, School of Engineering, Associate Professor, 工学部, 助教授 (90235599)
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| Co-Investigator(Kenkyū-buntansha) |
MIKAMI Osamu Tokai University, School of Information Technology and Electronics, Professor, 電子情報学部, 教授 (30266366)
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| Project Period (FY) |
2003 – 2004
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| Keywords | Laser Diode / Self mixing Effect / Doppler-shifted Frequency / Velocimeter / Y-branching Waveguide / Integrated Optical Circuit |
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| Research Abstract |
We have proposed a new structure of two-beam irradiation head using Y-branching waveguides and a fiber lens for Selfmixing laser Doppler Velocimeter.
First, velocity measurement was studied with Y-branching waveguides only. Then, setting a fiber lens on the edge of Y-branching waveguides, we accomplished the experiment. Comparison between a single-mode fiber (SMF) and a plastic optical fiber (POF) as a fiber lens was made.
It was confirmed that the sensor head of compact LDV was possible.
In addition, we found that a new structure of two-beam irradiation head using a V-shape fiber. Two-beam irradiation was successfully achieved and the object velocity could be measured using a single fiber.
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