Photoenhanced survivability of optical fibers at 1.30 um for harsh aerospace environments

Bruce D. Evans

doi:10.1117/12.21971

1 September 1990 Photoenhanced survivability of optical fibers at 1.30 μm for harsh aerospace environments

Bruce D. Evans

Proceedings Volume 1314, Fibre Optics '90; (1990) https://doi.org/10.1117/12.21971
Event: Fibre Optics '90, 1990, London, United Kingdom

Abstract

Photobleaching at 1.30 by 1.30-micron transmitted light during and following exposure to Co-60 irradiation is evaluated at -55 C in undoped and doped silica fibers. It is found that photobleaching can reduce radiation-induced attenuation by a factor of ten with an irradiance as low as approximately 0.1 W/sq cm in fibers where the 630-nm drawing-induced band is absent. This low-temperature photobleaching is characterized by high-order recovery processes. Little photobleaching was observed in germanium doped fibers until irradiances were above 100 W/sq cm.

Citation Download Citation

Bruce D. Evans "Photoenhanced survivability of optical fibers at 1.30 μm for harsh aerospace environments", Proc. SPIE 1314, Fibre Optics '90, (1 September 1990); https://doi.org/10.1117/12.21971

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