Title :
Gamma-Ray Radiation Effect on Non-Resonant Third-Order Optical Nonlinearity of Germano-Silicate Optical Fiber
Author :
Youngwoong Kim ; Seongmin Ju ; Seongmook Jeong ; Jong-Yeol Kim ; Nam-Ho Lee ; Hyun-Kyu Jung ; Won-Taek Han
Author_Institution :
Dept. of Phys. & Photon Sci., Gwangju Inst. of Sci. & Technol., Gwangju, South Korea
Abstract :
Gamma-ray radiation effect on the non-resonant third-order optical nonlinearity of the germano-silicate optical fiber has been investigated by the continuous-wave self-phase modulation method. The nonlinear refractive index, n2, of the gamma-ray irradiated optical fiber was found to increase linearly with the increase of the gamma-ray induced absorption. The increased n2 has been mainly ascribed to the NBOs and Ge-realted radiation-induced defects having hyperpolarizabilities.
Keywords :
gamma-ray effects; germanium compounds; nonlinear optical susceptibility; optical fibre polarisation; optical glass; refractive index; self-phase modulation; Ge-realted radiation-induced defects; NBO; continuous-wave self-phase modulation method; gamma-ray induced absorption; gamma-ray irradiated optical fiber; gamma-ray radiation effect; germano-silicate optical fiber; hyperpolarizabilities; nonlinear refractive index; nonresonant third-order optical nonlinearity; Nonlinear optics; Optical attenuators; Optical fibers; Optical refraction; Optical variables control; Radiation effects; Gamma-ray; hyperpolarizabilities; non-resonant optical nonlinearity; nonlinear refractive index; optical fiber; radiation-induced defects; radiation-induced effects;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2015.2427804
