Photobleaching Effects In Step Index Pure Silica Optical Fibers During In-Situ Irradiation At Low Temperatures

A H Johnston; B D Evans; M P Baze; R A Greenwell

doi:10.1117/12.965059

8 June 1988 Photobleaching Effects In Step Index Pure Silica Optical Fibers During In-Situ Irradiation At Low Temperatures

A H Johnston, B D Evans, M P Baze, R A Greenwell

Author Affiliations +

Proceedings Volume 0867, Optical Devices in Adverse Environments; (1988) https://doi.org/10.1117/12.965059
Event: 1987 Symposium on the Technologies for Optoelectronics, 1987, Cannes, France

Abstract

This paper investigates photobleaching at a low temperature in a multi-mode step index pure-silica-core optical fiber. Radiation-induced attenuation and subsequent recovery were measured over a wide range of transmitted optical power levels. These measurements were performed at a wavelength of 850 nm and a temperature of -55 °C using the NATO/FOTP-49 test procedures. When low levels of optical power were used, the maximum attenuation increased by a factor of ten and the recovery time increased by a factor of thirty compared with results at high optical power. Complete recovery required several hours at the lowest optical powers.

Citation Download Citation

A H Johnston, B D Evans, M P Baze, and R A Greenwell "Photobleaching Effects In Step Index Pure Silica Optical Fibers During In-Situ Irradiation At Low Temperatures", Proc. SPIE 0867, Optical Devices in Adverse Environments, (8 June 1988); https://doi.org/10.1117/12.965059

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