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Proceedings Paper

Optical fiber-coupled flow cells and their application in in-situ water analysis
Author(s): Günter Schwotzer; Hartmut Lehmann; Lars Kröckel; Torsten Wieduwilt; Reinhard Willsch
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Paper 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.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70043Y (16 May 2008); doi: 10.1117/12.786041
Show Author Affiliations
Günter Schwotzer, Institute of Photonic Technology (Germany)
Hartmut Lehmann, Institute of Photonic Technology (Germany)
Lars Kröckel, Institute of Photonic Technology (Germany)
Torsten Wieduwilt, Institute of Photonic Technology (Germany)
Reinhard Willsch, Institute of Photonic Technology (Germany)

Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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