Optical fiber underwater fluorometer for measuring chlorophyll-a concentration

Longjiang Zheng; Peiguo Hou; Yutian Wang

doi:10.1117/12.403942

11 October 2000 Optical fiber underwater fluorometer for measuring chlorophyll-a concentration

Longjiang Zheng, Peiguo Hou, Yutian Wang

Proceedings Volume 4224, Biomedical Photonics and Optoelectronic Imaging; (2000) https://doi.org/10.1117/12.403942
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

This paper describes an efficient method for in-situ measurement of chlorophyll-a concentration in the seawater with fluorescence method and optical fiber techniques. The instrument uses the pulsed xenon lamp as the excited light resources. Both the exciting light and the fluorescence from algae chlorophyll-a are transmitted along two fiber bundles. The fluorescent signal is detected by using the relevant pulsed detecting technology. The minimal detecting concentration of chlorophyll-a in the ocean can reach 1x10^-5mg/cm³. The system has advantages of simple structure, passive sensor head and high sensitivity. The experimental results show that this measurement method is realizable.

Citation Download Citation

Longjiang Zheng, Peiguo Hou, and Yutian Wang "Optical fiber underwater fluorometer for measuring chlorophyll-a concentration", Proc. SPIE 4224, Biomedical Photonics and Optoelectronic Imaging, (11 October 2000); https://doi.org/10.1117/12.403942

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