22 December 1993 Anisotropy of photoinduced index change in Ge-doped optical fiber
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The index change induced by two-photon absorption of green light in Ge-doped optical fiber is partly anisotropic. We review the experimental facts that form the basis for a physical model of bleachable oriented defects. We also describe how a density matrix formalism, based on a simili three-level system, can be used to determine the tensorial properties of the photoinduced index change.
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Jocelyn Lauzon, Jocelyn Lauzon, Michel Poirier, Michel Poirier, Simon Thibault, Simon Thibault, Sophie LaRochelle, Sophie LaRochelle, Alain Blouin, Alain Blouin, Francois Ouellette, Francois Ouellette, } "Anisotropy of photoinduced index change in Ge-doped optical fiber", Proc. SPIE 2044, Photosensitivity and Self-Organization in Optical Fibers and Waveguides, (22 December 1993); doi: 10.1117/12.165666; https://doi.org/10.1117/12.165666

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