22 December 1993 Defect orientation models of germanosilicate photosensitivity: paradoxical observations
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Abstract
Single-photon photodarkening of a germanosilicate optical fiber preform is reported and discussed in the context of oxygen deficiency defects. Qualitative and semi-quantitative aspects of a multiphoton interference model of photorefractive change in germanosilicate fibers are explored. The conditioning of production of yellow Cerenkov radiation by a fiber is reported and attributed to homogeneously induced (chi) (2) susceptibility. Two nonlinear processes are again thought to be involved. The need for mode detuning to take full advantage of waveguide nonlinear effects is highlighted.
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Richard J. Potton, Richard J. Potton, } "Defect orientation models of germanosilicate photosensitivity: paradoxical observations", Proc. SPIE 2044, Photosensitivity and Self-Organization in Optical Fibers and Waveguides, (22 December 1993); doi: 10.1117/12.165669; https://doi.org/10.1117/12.165669
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