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Proceedings Paper

Flow velocity measurements using self-mixing effect inside a single-mode VCSEL with polymer optical fiber
Author(s): Rongsheng Zheng; Huaqiao Gui; Chun Gu; Chunchong Chen; Jie Yan; Tianpeng Zhao; Fugui Yang; Hai Ming
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Paper Abstract

We demonstrate a laser Doppler velocimeter (LDV) based on self-mixing effect in a single longitudinal mode VCSEL for velocity measurement of flowing milk using Polymer Optical Fiber (POF). We find that self-mixing signal in frequency domain was broadened using POF compare with space coupled. The flow velocity was measured when POF outside and inside the milk. Their self-mixing signals of power spectrum can be fitted with Gaussian and exponential decay function, respectively. The differences of self-mixing signal in frequency domain when POF outside and inside milk are discussed. Due to POF have the advantages of flexibility and compatible with biology, this velocimeter can also be used for the measurement of blood flow in vivo.

Paper Details

Date Published: 26 November 2007
PDF: 6 pages
Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 683025 (26 November 2007); doi: 10.1117/12.758687
Show Author Affiliations
Rongsheng Zheng, Univ. of Science and Technology of China (China)
Huaqiao Gui, Univ. of Science and Technology of China (China)
Chun Gu, Univ. of Science and Technology of China (China)
Chunchong Chen, Univ. of Science and Technology of China (China)
Jie Yan, Univ. of Science and Technology of China (China)
Tianpeng Zhao, Univ. of Science and Technology of China (China)
Fugui Yang, Univ. of Science and Technology of China (China)
Hai Ming, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 6830:
Advanced Sensor Systems and Applications III
Yun-Jiang Rao; Yanbiao Liao; Gang-Ding Peng, Editor(s)

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