Analysis of External Optical Feedback Effects in the non-Linear Semiconductor Laser Response Considering Second Order Intermodulation Products

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2000

Autores

M. Madureira (Autor) Outra; Henrique Salgado (Autor) FEUP

Ata de Conferência Internacional

Título: London Communications Symposium-LCS2000

Páginas: 1-4

London Communications Symposium-LCS2000

University College London, London, U.K.

Outras Informações

Abstract (EN): In SCM (sub-carrier multiplexing) communication systems, backreflections caused by splices, connectors or the Fresnel effect at the end of the fibre, may contribute to signal degradation and increase intermodulation distortion. In analogue optical links this means a loss in SNR and linearity. In this paper, an adequate semiconductor laser non-linear model for the assessment of the effect of optical reflections on the second order intermodulation distortion is developed. A mathematical treatment along with simulation results is presented. It is shown that there is a periodicity in intermodulation distortion ripple with external cavity length and that for values of the latter in excess of a few meters this ripple becomes negligible. This work was done as part of a cooperation with CERN for the CMS-Tracker project.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4