Open AccessOptical Fiber Applicators for Fluorescence Measurements
Author(s) -
Cappius HansJoachim,
Schmitt FranzJosef,
Südmeyer Heinrich
Publication year - 2012
Publication title -
optik & photonik
Language(s) - English
Resource type - Journals
eISSN - 2191-1975
pISSN - 1863-1460
DOI - 10.1002/opph.201290099
Subject(s) - polishing , materials science , optical fiber , grinding , optics , fiber , core (optical fiber) , fluorescence , optoelectronics , composite material , physics
For health protection and reproducible process outcome in chemical engineering clean surfaces are necessary. Optical methods and special applicators can enable cleaning validation in areas to date not as accessible as desired, e.g. in tubes. Here, design concepts for fiberbased fluorescence and Raman detection in long thin lumina and the lower detection limits of protein coatings are presented. The main aspect of this type of fiber applicators is the maximization of light transmitted to and collected from the illuminated spot. This is achieved by a patented manufacturing method of melting the fiber tip and grinding and polishing the ball‐lens formed at the fiber tip to deflect the light from the fiber core towards one side.