Abstract
Abstract Three categories of polymer optical fibers viz., step index (SI), graded index (GI) and hollow types doped with Rhodamine 6G (Rh6G) at specific concentrations were fabricated to study their optical properties. Detailed measurements were made to understand the amplified spontaneous emission (ASE) and photodegradation phenomena in these polymer optic fiber (POF) systems. Rh6G doped hollow POF shows maximum line narrowing for a given pump power at 532 nm when side illumination technique is employed. A redshift in ASE has been observed when propagation length is increased allowing a limited range of tuning of emission wavelength. Photostability studies show that GI POF has the maximum endurance at a given pump power.
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