Optically induced creation, transformation and organisation of defects and color centers in optical fibres
Russell, Phillip St.J., Hand, Duncan P., Chow, Yuk T. and Poyntz-Wright, L.J. (1991) Optically induced creation, transformation and organisation of defects and color centers in optical fibres. In, Ouellette, Francois (ed.) International Workshop on Photoinduced Self-Organization Effects in Optical Fiber. Bellingham, US, The International Society for Optical Engineering, 47-54. (Proceedings of SPIE, 1516). (doi:10.1117/12.51160).
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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.
|Item Type:||Book Section|
|Subjects:||Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||11 Mar 2010|
|Last Modified:||24 Aug 2015 15:56|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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