Poyntz-Wright, L.J. and Russell, P.St.J.
A colour-centre model for second-order optical nonlinearities in germanosilicate optical fibres.
In, Integrated Photonics Research, Greenville, US,
26 - 28 Mar 1990.
Second-order nonlinearities can be induced in germanosilicate (GS) glass fibers in a variety of ways: by coherent superposition of pump and second-harmonic light (a third-order dc polarization Ps in the absence of light? There is as yet no satisfactory agreement over the nature of the underlying alignment process. From related detailed studies of color-center behavior in GS fiber, we have formulated a self-consistent model as developed in the following points
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