Fiber optic sensor system for controlling salt contents in the near-coastal shrimp farms

Van Hoi Pham; Duc Thinh Vu; Huu An Phung; Cao Dzung Hoang; Huy Bui; Thi Cham Tran

doi:10.1117/12.380533

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29 March 2000 Fiber optic sensor system for controlling salt contents in the near-coastal shrimp farms

Van Hoi Pham, Duc Thinh Vu, Huu An Phung, Cao Dzung Hoang, Huy Bui, Thi Cham Tran

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Proceedings Volume 3945, Laser Diodes and LEDs in Industrial, Measurement, Imaging, and Sensors Applications II; Testing, Packaging, and Reliability of Semiconductor Lasers V; (2000) https://doi.org/10.1117/12.380533
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

The fiber optic sensor system, that consists of 6 - 8 fiber sensor heads and can measure the salt-content in the water of near-coastal region of 1 Km², is presented. The fiber optic sensor head was made by polishing the end of a double fiber in the form of a prism, with reflecting coating on one side, and had a dimension of 250 - 300 microns. The fiber optic sensor with lead-in power of 3 - 15 mW from visible laser diodes was tested for measuring salt content in the seawater from 0 to 4 wt.%. The results are repeatable and the accuracy less than 10^-3 is suitable for controlling the salinity degree in the range of 0.5 - 1.7% in the near coastal shrimp farms, especially for the childhood shrimp fields.

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Van Hoi Pham, Duc Thinh Vu, Huu An Phung, Cao Dzung Hoang, Huy Bui, and Thi Cham Tran "Fiber optic sensor system for controlling salt contents in the near-coastal shrimp farms", Proc. SPIE 3945, Laser Diodes and LEDs in Industrial, Measurement, Imaging, and Sensors Applications II; Testing, Packaging, and Reliability of Semiconductor Lasers V, (29 March 2000); https://doi.org/10.1117/12.380533

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