TY - GEN
T1 - Effect of Ionizing Radiation on Optical Transmission of Actively Pumped Yb- Doped Fiber Amplifiers
AU - Fox, Brian P.
AU - Simmons-Potter, Kelly
N1 - Funding Information:
Manuscript received 9/13/2018. This work was supported by the University of Arizona, TRIF, and by Sandia National Laboratories. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA-0003525. NOTICE: This summary was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, make any warranty, express or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represent that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government, any agency thereof, or any of their contractors or subcontractors. The views and opinions expressed herein do not necessarily state or reflect those of the United States Government, any agency thereof, or any of their contractors. (Corresponding author: Kelly Simmons-Potter.) B. P. Fox is with Sandia National Laboratories, Albuquerque, NM 87185-1159, USA (e-mail: bpfox@sandia.gov).
Publisher Copyright:
© 2018 IEEE.
PY - 2018/9
Y1 - 2018/9
N2 - Fibers doped with Yb3+ serve as optical amplification elements in many high-power amplification systems, and there is an interest in significantly extending the capabilities of rare-earth doped fiber amplifiers to space-based systems. We investigate the effects of gamma-radiation-induced photodarkening on the performance of such fibers, both for passive as well as active configurations. With an emphasis on low total ionizing doses, passive irradiations were found to show increased absorption across the visible and IR spectrum. Furthermore, continuous-pumping of an Yb3+ -doped fiber amplifier in a gamma radiation environment was found to exhibit significantly greater degradation than a similar intermittently-pumped irradiated amplifier for low total ionizing doses of under 10 krad(Si) [100 Gy(Si)]. We discuss the implications of the data which provide insight into energy-transfer mechanisms in the fibers and the relationship of gamma-radiation-induced photodarkening and pump-radiation-induced photodarkening associated with the observed fiber degradation.
AB - Fibers doped with Yb3+ serve as optical amplification elements in many high-power amplification systems, and there is an interest in significantly extending the capabilities of rare-earth doped fiber amplifiers to space-based systems. We investigate the effects of gamma-radiation-induced photodarkening on the performance of such fibers, both for passive as well as active configurations. With an emphasis on low total ionizing doses, passive irradiations were found to show increased absorption across the visible and IR spectrum. Furthermore, continuous-pumping of an Yb3+ -doped fiber amplifier in a gamma radiation environment was found to exhibit significantly greater degradation than a similar intermittently-pumped irradiated amplifier for low total ionizing doses of under 10 krad(Si) [100 Gy(Si)]. We discuss the implications of the data which provide insight into energy-transfer mechanisms in the fibers and the relationship of gamma-radiation-induced photodarkening and pump-radiation-induced photodarkening associated with the observed fiber degradation.
KW - Aluminosilicate
KW - fiber amplifier
KW - optical fiber
KW - radiation-induced attenuation
KW - rare-earth doped amplifier
KW - rare-earth doped fiber amplifier
KW - Yb-doped fibers
KW - YDFA
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U2 - 10.1109/RADECS45761.2018.9328703
DO - 10.1109/RADECS45761.2018.9328703
M3 - Conference contribution
AN - SCOPUS:85100474457
T3 - 2018 18th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2018
BT - 2018 18th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 18th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2018
Y2 - 16 September 2018 through 21 September 2018
ER -