Optical fiber-coupled flow cells and their application in in-situ water analysis

Günter Schwotzer; Hartmut Lehmann; Lars Kröckel; Torsten Wieduwilt; Reinhard Willsch

doi:10.1117/12.786041

16 May 2008 Optical fiber-coupled flow cells and their application in in-situ water analysis

Günter Schwotzer, Hartmut Lehmann, Lars Kröckel, Torsten Wieduwilt, Reinhard Willsch

Author Affiliations +

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70043Y (2008) https://doi.org/10.1117/12.786041
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

Liquid core wave guides (LCW) are particularly suited as flow-through cells for highly sensitive spectral analysis of small liquid sample volumes as the light propagation is constrained to the liquid core. We report on LCW formed by inside coating of glass capillaries with Teflon^(R) AF 1600 (n ≈ 1.31). The wave guiding losses are between 0.2 and 0.3 dB/cm. On the base of fiber-coupled LCW flow-through cells both, a spectrophotometer and a fluorescence detector have been developed and tested for in-situ water analysis, especially for nitrate and phosphate detection in sea water.

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Günter Schwotzer, Hartmut Lehmann, Lars Kröckel, Torsten Wieduwilt, and Reinhard Willsch "Optical fiber-coupled flow cells and their application in in-situ water analysis", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70043Y (16 May 2008); https://doi.org/10.1117/12.786041

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