Optical fibers in instrumental UV-analytics

Karl-Friedrich Klein; Joachim Mannhardt; Mathias Belz; Cornell Gonschior; Hanns S. Eckhardt

doi:10.1117/12.818663

20 February 2009 Optical fibers in instrumental UV-analytics

Karl-Friedrich Klein, Joachim Mannhardt, Mathias Belz, Cornell Gonschior, Hanns S. Eckhardt

Proceedings Volume 7173, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX; 717302 (2009) https://doi.org/10.1117/12.818663
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

Physical and optical properties of optical fibers have improved over recent years significantly. Especially classic UV detection techniques in traditional chemistry, HPLC and dissolution testing rely more and more on fiber optic light guiding techniques to transport light to and from a sample simplifying the design of such detection techniques. An overview on the current status of UV-fiber optical properties will be given in this work. Especially, the reduction of UVdefects in the 215 nm wavelength region leading to a lower drift in the whole system, will be discussed. However, these are not the only parameters of interest in a fiber-optic system. For process control or instrumental analytics, the long-term stability including drift and noise must be determined. This requires stringent fiber test procedures similar to light-sources, connectors and complete detector systems. Further, white-light interference between optical interfaces of a fiber optic detection system due to axial movement, degradation of components and temperature often reduces system stability and must be considered. Finally, a cleaning-in-process of a fiber optic immersion probe will be introduced as a further step of system improvement.

Citation Download Citation

Karl-Friedrich Klein, Joachim Mannhardt, Mathias Belz, Cornell Gonschior, and Hanns S. Eckhardt "Optical fibers in instrumental UV-analytics", Proc. SPIE 7173, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX, 717302 (20 February 2009); https://doi.org/10.1117/12.818663

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