Radiation-induced loss predictions for pure silica core polarization-maintaining fibers

Michael J. Lu Valle; E. Joseph Friebele; Frank V. Dimarcello; Gary A. Miller; Eric M. Monberg; Lucie R. Wasserman; Patrick W. Wisk; Man F. Yan; Elizabeth M. Birtch

doi:10.1117/12.682973

24 May 2006 Radiation-induced loss predictions for pure silica core polarization-maintaining fibers

Michael J. Lu Valle, E. Joseph Friebele, Frank V. Dimarcello, Gary A. Miller, Eric M. Monberg, Lucie R. Wasserman, Patrick W. Wisk, Man F. Yan, Elizabeth M. Birtch

Author Affiliations +

Proceedings Volume 6193, Reliability of Optical Fiber Components, Devices, Systems, and Networks III; 61930J (2006) https://doi.org/10.1117/12.682973
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

We examined the room temperature radiation-induced optical attenuation of silica-core, polarization-maintaining fibers with boron stress rods. The fibers were exposed to 55 MeV protons to equivalent doses between 100 krad and 1 Mrad at dose rates of 2 to 100 rad/s. Spectra from 1250-1725 nm were recorded during both exposure and ~2,800 h recovery. The spectral response over time indicates two separate populations of defects that affect loss. Explicit kinetic modeling indicates that the growth of the induced loss is consistent with a power law in dose rate, and recovery is consistent with low (1^st or 2^nd) order annealing with a distribution of activation energies and a single attempt frequency for each population. For predicting the radiation-induced loss in exposure conditions of much lower dose rate and much longer time, our theory and numerical simulations indicate that the best experiments for reducing risk in our extrapolations include higher temperature anneals, and, unavoidably, longer exposures at lower dose rate.

Citation Download Citation

Michael J. Lu Valle, E. Joseph Friebele, Frank V. Dimarcello, Gary A. Miller, Eric M. Monberg, Lucie R. Wasserman, Patrick W. Wisk, Man F. Yan, and Elizabeth M. Birtch "Radiation-induced loss predictions for pure silica core polarization-maintaining fibers", Proc. SPIE 6193, Reliability of Optical Fiber Components, Devices, Systems, and Networks III, 61930J (24 May 2006); https://doi.org/10.1117/12.682973

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