TY - CHAP A1 - Ming Chen ED1 - Paul Urquhart Y1 - 2011-02-14 PY - 2011 T1 - Chromatic Dispersion Monitoring Method Based on Semiconductor Optical Amplifier Spectral Shift in 40 Gbit/s Optical Communication Systems N2 - Optical amplifiers play a central role in all categories of fibre communications systems and networks. By compensating for the losses exerted by the transmission medium and the components through which the signals pass, they reduce the need for expensive and slow optical-electrical-optical conversion. The photonic gain media, which are normally based on glass- or semiconductor-based waveguides, can amplify many high speed wavelength division multiplexed channels simultaneously. Recent research has also concentrated on wavelength conversion, switching, demultiplexing in the time domain and other enhanced functions. Advances in Optical Amplifiers presents up to date results on amplifier performance, along with explanations of their relevance, from leading researchers in the field. Its chapters cover amplifiers based on rare earth doped fibres and waveguides, stimulated Raman scattering, nonlinear parametric processes and semiconductor media. Wavelength conversion and other enhanced signal processing functions are also considered in depth. This book is targeted at research, development and design engineers from teams in manufacturing industry, academia and telecommunications service operators. BT - Advances in Optical Amplifiers SP - Ch. 8 UR - https://doi.org/10.5772/13619 DO - 10.5772/13619 SN - PB - IntechOpen CY - Rijeka Y2 - 2019-11-22 ER -