High Speed Optical Communication Systems - Softcover

Ibrahim, Selwan K

 
9783639041279: High Speed Optical Communication Systems
Softcover
ISBN 10: 3639041275 ISBN 13: 9783639041279
Publisher: VDM Verlag Dr. Mueller E.K., 2008

Synopsis

Spectrally efficient modulation formats can be used to overcome the problems associated with limited channels and bandwidth of Dense Wavelength Division Multiplexing (DWDM) optical systems. Multilevel modulation formats are considered spectrally efficient and can double the transmission capacity by transmitting more information in the amplitude, phase, polarization or a combination of all. Here we have studied and evaluated different multilevel modulation formats in a practical optical transmission system. Such modulation formats are Differential Quadrature Phase Shift Keying (DQPSK), DQPSK with Polarization Division Multiplex (PolDM), Quaternary Intensity Modulation (4-IM, QASK), Quaternary Duobinary (QDB), and Quaternary Polarization Duobinary (QPolDB). The QDB and QPolDB quaternary signals are attractive for DWDM systems applied for short reach (several kilometers) to medium reach (several hundred kilometers) transmission applications (metro applications). However, for long or ultra long haul optical fiber transmission systems, DQPSK and DQPSK PolDM modulation formats featuring better receiver sensitivities are potential candidates.

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Publisher
VDM Verlag Dr. Mueller E.K.
Publication date
2008
Language
English
ISBN 10 
3639041275
ISBN 13 
9783639041279
Binding
Paperback
Number of pages
108