“The submitted manuscript hu bcen aothored by a contractor of the U.S. Government under contract No. DE-AC05-960R22464. Accordingly, the U.S. Government retains P non-exclusive, mydty-tm UCCM to publish or mpmduce the published form of this mntribution, or allow others to do so, for US. Government purposes.” ORNL/CP-100113 DYNAMIC FIBER OPTIC SENSORS UNDER INTENSE RADIOACTIVE ENVIRONMENTS* C. C. TSAI, S. W. ALLISON, D. D. EARL, and J. R. HAINES Oak Ridge National Laboratory P.O. Box 2009 Oak Ridge, TN 37831-8071, USA *Research sponsored by Oak Ridge National Laboratory, managed by Lockheed Martin Energy Research Corp. for the U.S. Department of Energy under contract DE-AC05-960R22464.