Flow velocity measurements using self-mixing effect inside a single-mode VCSEL with polymer optical fiber

Rongsheng Zheng; Huaqiao Gui; Chun Gu; Chunchong Chen; Jie Yan; Tianpeng Zhao; Fugui Yang; Hai Ming

doi:10.1117/12.758687

26 November 2007 Flow velocity measurements using self-mixing effect inside a single-mode VCSEL with polymer optical fiber

Rongsheng Zheng, Huaqiao Gui, Chun Gu, Chunchong Chen, Jie Yan, Tianpeng Zhao, Fugui Yang, Hai Ming

Author Affiliations +

Proceedings Volume 6830, Advanced Sensor Systems and Applications III; 683025 (2007) https://doi.org/10.1117/12.758687
Event: Photonics Asia 2007, 2007, Beijing, China

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.

Citation Download Citation

Rongsheng Zheng, Huaqiao Gui, Chun Gu, Chunchong Chen, Jie Yan, Tianpeng Zhao, Fugui Yang, and Hai Ming "Flow velocity measurements using self-mixing effect inside a single-mode VCSEL with polymer optical fiber", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 683025 (26 November 2007); https://doi.org/10.1117/12.758687

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