27 September 2016 High-stability polymer optical fiber with Rhodamine-doped cladding for fiber light systems
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In this work, the photodegradation of a polymer optical fiber with Rhodamine doped cladding as a function of illumination time and excitation intensity is presented. To show the effect of photodegradation on different bulk geometries and environments, the photodegradation from a dye doped preform and a PMMA thick film is also evaluated. The reversible and the irreversible degradation of the florescent material were quantified under an established excitation scheme. To this purpose, a four-level system to model the photodegradation rates and its relation with the population of the states is presented and it is used to justify a possible underlying mechanism. The obtained results suggest an increase of one order of magnitude in the stability (lifetime) of the polymer optical fiber with respect to the preform or the thick film geometry stability.
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L. Jaramillo-Ochoa, L. Jaramillo-Ochoa, R. Narro-García, R. Narro-García, M. A. Ocampo, M. A. Ocampo, R. Quintero-Torres, R. Quintero-Torres, "High-stability polymer optical fiber with Rhodamine-doped cladding for fiber light systems", Proc. SPIE 9953, Optical Modeling and Performance Predictions VIII, 99530L (27 September 2016); doi: 10.1117/12.2236349; https://doi.org/10.1117/12.2236349

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