Components for Fibre Optical Communication

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Abstract

The paper deals with the components for fibre-optic links. In the first part, general trends in fibre optical communication research and corresponding activities in component development are outlined, namely: - higher performance and lower component cost for modern systems, - transition to longer wavelength systems, - more complex systems including optical signal processing. In the second part, the performance of injection lasers as sources for optical systems is discussed in more detail. In this connection stripe-geometry lasers with gain-guiding and index-guiding are compared with respect to such parameters as spectral behaviour, noise properties and sensitivity to optical feedback.