@inproceedings{a041dcf1a2fc4aa1a775683696eccae4,
title = "Gamma-radiation-induced photodarkening in actively pumped Yb3+- doped optical fiber and investigation of post-Irradiation transmittance recovery",
abstract = "Fibers doped with rare-earth constituents such as Yb3+ and Er3+, as well as fibers co-doped with these species, form an essential part of many optical systems requiring amplification. This study consists of two separate investigations examining the effects of gamma-radiation-induced photodarkening on the behavior of rare-earth doped fibers. In one part of this study, a suite of previously irradiated rare-earth doped fibers was heated to an elevated temperature of 300°C and the transmittance monitored over an 8-hour period. Transmittance recoveries of ~10 - 20% were found for Er3+- doped fiber, while recoveries of ~5 - 15% and ~20% were found for Yb3+- and Yb3+/Er3+ co-doped fibers, respectively. In the other part of this study, an Yb3+-doped fiber was actively pumped by a laser diode during a gamma-radiation exposure to simulate the operation of an optical amplifier in a radiation environment. The response of the amplified signal was observed and monitored over time. A significant decrease in amplifier output was observed to result from the gamma-radiation exposure.",
keywords = "Elevated-temperature thermal anneal, Fiber annealing, Fiber loss recovery, Gamma irradiation, Photodarkening, Radiation-induced absorption, Rare-earth doped fibers, Yb-doped fiber amplifier",
author = "Fox, {B. P.} and K. Simmons-Potter and Moore, {S. W.} and Fisher, {J. H.} and Meister, {D. C.}",
year = "2009",
doi = "10.1117/12.828382",
language = "English (US)",
isbn = "9780819477248",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
booktitle = "Optical Technologies for Arming, Safing, Fuzing, and Firing V",
note = "Optical Technologies for Arming, Safing, Fuzing, and Firing V ; Conference date: 05-08-2009 Through 05-08-2009",
}