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24 June 1993 Laser-induced damage in step-index multimode fibers
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In the present study, fiber damage experiments were conducted using a new approach for injecting the laser beam into fiber samples. The purpose of this approach was to achieve a test configuration that was independent of the mode structure of the particular laser being used. The method developed was successful in eliminating internal damage within the first few hundred fiber diameters, but resulted in the fiber entrance face being the most likely damage site. This feature, however, proved quite useful for re-examining the effects of CO2-laser polishing on damage thresholds at the entrance face. Using a test sequence similar to that used previously, a particular laser-polishing schedule was found that significantly improved damage resistance. In addition, preliminary damage experiments were performed during which fiber samples were subjected to much higher bending stresses under carefully controlled conditions.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ellen B. Stechel "Laser-induced damage in step-index multimode fibers", Proc. SPIE 1848, 24th Annual Boulder Damage Symposium Proceedings -- Laser-Induced Damage in Optical Materials: 1992, (24 June 1993);

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