Russell, Phillip St.J., Hand, Duncan P., Chow, Yuk T. and Poyntz-Wright, L.J.,
Optically induced creation, transformation and organisation of defects and color centers in optical fibres
Ouellette, Francois (ed.)
In International Workshop on Photoinduced Self-Organization Effects in Optical Fiber.
The International Society for Optical Engineering., .
Full text not available from this repository.
Over the past five years, a colour-centre model for the dynamics of the absorption induced in germanosilicate fibres upon exposure to blue/green light has been under development at Southampton. This model is introduced and its predictions used for the first time to test our proposed Kramers-Kronig mechanism for the concurrent refractive index changes induced in the visible and the infra-red. It is found that the predicted colour-centre population changes in the UV are to explain these refractive index changes. A possible alternative model, based on density changes in the glass triggered by colour-centre formation, is assessed experimentally and analytically. The implications of this result to photonically driven self-organisation in fibres is briefly assessed, and reference made to recent experimental results.
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