Radiation effects on optical fibers and amplifiers

The effects of gamma radiation on rare-earth doped optical fibers have been investigated over the range of 0.01 to 145 kilorads(Si) per hour to total doses exceeding 100 kilorads(Si). The effects of 3 to 4 MeV protons have also been investigated. The level of radiation induced damage has been found to be strongly dependent on radiation dose rate and fiber composition. The existence of dose rate dependence is explained by the process of simultaneous creation of color center defects and annihilation via thermal annealing. Through the use of a suitable kinetic analysis technique, we have determined appropriate rate constants for this process and have developed an empirical model based on our experimental results. In addition to these results, we present the effects of gamma radiation on the performance of operational high power erbium-ytterbium optical amplifiers.

[1]  Kenneth A. LaBel,et al.  Survivable fiber-based data links for satellite radiation environments , 1993, Optics East.

[2]  A. Rose,et al.  A physical interpretation of dispersive transport in disordered semiconductors , 1981 .

[3]  Martin A. Putnam,et al.  Radiation-induced coloring of erbium-doped optical fibers , 1993, Other Conferences.

[4]  N. Olsson,et al.  Erbium-Doped Fiber Amplifiers: Fundamentals and Technology , 1999 .

[5]  E. J. Friebele,et al.  Model for the dose, dose-rate and temperature dependence of radiation-induced loss in optical fibers , 1994 .

[6]  S. Kannan,et al.  Analysis of recovery in radiation-induced loss in rare-earth-doped fibers through master curve/demarcation energy diagrams , 1999, OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.

[7]  Jacques Albert,et al.  EFFECT OF PROTON IMPLANTATION ON THE PHOTOSENSITIVITY OF SMF-28 OPTICAL FIBER , 1999 .

[8]  S. Kannan,et al.  Radiation reliability of rare earth doped optical fibers for laser communication systems (LT) , 1999, MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341).

[9]  C. Askins,et al.  Effect of low dose rate irradiation on doped silica core optical fibers. , 1984, Applied optics.

[10]  H. M. Presby,et al.  Refractive index variations in proton‐bombared fused silica , 1974 .

[11]  Don Monroe,et al.  DECAY OF ULTRAVIOLET-INDUCED FIBER BRAGG GRATINGS , 1994 .