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Optical Fiber Telecommunications VA by Alan E Willner, Tingye Li, Ivan Kaminow

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Chapter 1

Advances in Fiber Distributed-Feedback Lasers

Michalis N. Zervas,    Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK

1.1 Introduction

The recent re-introduction of optical coherent techniques has revolutionized modern telecom communications and has resulted in the most spectrally efficient optical system demonstrations to date [1]. In addition to record spectral efficiencies, coherent communication systems offer other advantages in terms of system flexibility, reduced signal-to-noise ratio requirements, increased resilience against fiber chromatic dispersion and in many aspects simplify the system design. However, coherent detection systems, such as, for example, coherent-optical orthogonal-frequency-division-multiplexed ...

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