Optical Phase Modulated Systems Numerical Estimation And Experimental Measurement Of Phase Jitter
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Author | : David Boivin |
Publisher | : |
Total Pages | : 17 |
Release | : 2006 |
Genre | : |
ISBN | : |
There has recently been a renewed effort to develop coherent optical communication systems. In particular, differential phase-shift keying (DPSK), which does not require a local oscillator to perform decoding, is the focus of the attention and is perceived to be the promising candidate for future optical communication systems updates. This motivates us to exploit DPSK in wavelength-division multiplexed systems. First, modulation formats based on phase show an increased robustness to nonlinear impairments such as cross-phase modulation (XPM) and nonlinear polarization rotation, primarily because the time dependence of the optical power is deterministic and periodic. Second, coherent formats allow a higher spectral efficiency since both in-phase and quadrature dimensions of the signal space are available to encode information. Optical phase is also used in intensity-modulated direct detection systems as an extra degree of freedom, for example to provide better resistance to intrachannel four-wave mixing (FWM) or to increase spectral efficiency in duobinary modulation. Finally, phase modulation outperforms its intensity counterpart in terms of sensitivity since a 3 dB improvement can be achieved when balanced detection is used. Nevertheless, DPSK-based formats show a different behavior to noise accumulated along the propagation. Noise-induced power fluctuations are converted into phase fluctuations by the Kerr effect and become a penalty source that limits the transmission system reach. In this context, there have been intense research activities for evaluating phase uncertainties, but the previous studies assume an analytically determined pulse shape and a constant-dispersion optical link that is far from reflecting the actual and future structures of transmission lines. The objective of the proposed research is to investigate new and more efficient techniques in numerical evaluation and experimental measurement of phase jitter impact on more general communication systems, including dispersion management, filtering, and spectral inversion schemes.
Author | : |
Publisher | : |
Total Pages | : 1006 |
Release | : 2008 |
Genre | : Dissertations, Academic |
ISBN | : |
Author | : Pramod Rastogi |
Publisher | : CRC Press |
Total Pages | : 364 |
Release | : 2014-11-21 |
Genre | : Science |
ISBN | : 1466598328 |
This book covers the essentials of phase-stepping algorithms used in interferometry and pseudointerferometric techniques. It presents the basic concepts and mathematics needed for understanding modern phase estimation methods. The book first focuses on phase retrieval from image transforms using a single frame. It then examines the local environment of a fringe pattern, the phase estimation approach based on local polynomial phase modeling, temporal high-resolution phase evaluation methods, and methods of phase unwrapping. It also discusses experimental imperfections liable to adversely influence the accuracy of phase measurements.
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Total Pages | : |
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Author | : |
Publisher | : |
Total Pages | : 464 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Author | : Nicola Da Dalt |
Publisher | : Cambridge University Press |
Total Pages | : 270 |
Release | : 2018-02-22 |
Genre | : Technology & Engineering |
ISBN | : 131699306X |
Gain an intuitive understanding of jitter and phase noise with this authoritative guide. Leading researchers provide expert insights on a wide range of topics, from general theory and the effects of jitter on circuits and systems, to key statistical properties and numerical techniques. Using the tools provided in this book, you will learn how and when jitter and phase noise occur, their relationship with one another, how they can degrade circuit performance, and how to mitigate their effects - all in the context of the most recent research in the field. Examine the impact of jitter in key application areas, including digital circuits and systems, data converters, wirelines, and wireless systems, and learn how to simulate it using the accompanying Matlab code. Supported by additional examples and exercises online, this is a one-stop guide for graduate students and practicing engineers interested in improving the performance of modern electronic circuits and systems.
Author | : |
Publisher | : |
Total Pages | : 636 |
Release | : 2002 |
Genre | : Imaging systems |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1948 |
Release | : 1997 |
Genre | : Electrical engineering |
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Author | : |
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Total Pages | : 1794 |
Release | : 1969 |
Genre | : Medicine |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 976 |
Release | : 1996 |
Genre | : Optical instruments |
ISBN | : |
Publishes papers reporting on research and development in optical science and engineering and the practical applications of known optical science, engineering, and technology.