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Brillouin properties influenced by glass transition in plastic optical fibers.
- Source :
- International Conference on POF Proceedings; 2014, p236-239, 4p
- Publication Year :
- 2014
-
Abstract
- A temperature-dependence coefficient of Brillouin frequency shift (BFS) in plastic optical fibers (POFs) is known to start decreasing drastically at a certain "Brillouin critical temperature". Here, we study the relationship between the critical temperature and the core glass transition temperature (T<subscript>g</subscript>) using five poly(2,2,2-trifluoroethyl methacrylate) samples with different T<subscript>g</subscript> values. In all the samples, the BFS is found to start decreasing abruptly at a temperature lower than T<subscript>g</subscript> by approximately 10 °C, which agrees well with the phase transition starting temperature measured by using a differential scanning calorimeter. Thus, the critical temperature in POFs is shown to be adjustable by controlling T<subscript>g</subscript>, leading to the possible development of distributed temperature sensors with ultra-high sensitivity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- Database :
- Complementary Index
- Journal :
- International Conference on POF Proceedings
- Publication Type :
- Conference
- Accession number :
- 137439611