By Neophytos (Neo) Antoniades, Georgios Ellinas, Ioannis Roudas
Modeling, Simulation, layout and Engineering of WDM structures and Networks provides readers with the elemental abilities, suggestions, and layout innovations used to start layout and engineering of optical verbal exchange platforms and networks at quite a few layers. the most recent semi-analytical process simulation ideas are utilized to optical WDM structures and networks, and a assessment of a few of the present components of optical communications is gifted. Simulation is blended with experimental verification and engineering to offer the in addition to state of the art research.
This contributed quantity is split into 3 components, accommodating varied readers attracted to a variety of kinds of networks and functions. the 1st a part of the booklet offers modeling methods and simulation instruments mostly for the actual layer together with transmission results, units, subsystems, and systems), while the second one half positive aspects extra engineering/design concerns for varied varieties of optical platforms together with ULH, entry, and in-building platforms. The 3rd a part of the booklet covers networking concerns relating to the layout of provisioning and survivability algorithms for impairment-aware and multi-domain networks.
Intended for pro scientists, corporation engineers, and college researchers, the textual content demonstrates the effectiveness of computer-aided layout in terms of community engineering and prototyping.
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Extra resources for WDM Systems and Networks: Modeling, Simulation, Design and Engineering
For this purpose, a set of modified GNLS equations (similar to Eq. 23) for the two orthogonal polarization components of the electrical field E(z, t)x,y can be used to describe propagation mechanisms over birefringent optical fibers . Assuming rapidly varying birefringence and that the polarization states of light average over the whole Poincare sphere, the Manakov equation has been derived from that , with the coarse-step method being introduced as an efficient numerical method for solving it.
1 Black-Box Modeling A phenomenological modeling approach that requires parameters describing the behavior of EDFAs in a system context is better suited for the simulation of a WDM transmission line since the internal architecture and parameters of the amplifiers are typically not known at this level of design. For this purpose Black-Box modeling is favorable. The approach to consider amplifier gain and noise figure as fixed functions of wavelength is an approximate one since it ignores for instance dependencies of pump and signal powers on the EDFA gain and noise characteristics, yet for many system simulation applications it is fairly adequate.
34 A. 2 Unidirectional Transmission and Vectorial Field Description An increase of the channel bitrate to more than 10 Gbit/s makes degradations due to PMD noticeable. Modeling PMD in the fiber requires a vectorial approach, describing the electrical field of the propagating light by its Jones vector, and not only by the SOP-averaged electrical field components. To simulate system degradations due to PMD is time-consuming, as PMD is a random phenomenon that is varying in time and frequency. Special statistical treatments such as the coarse-step model [49, 50] (possibly combined with the importance sampling technique ) can be applied to avoid an inefficient straightforward integration with very short steps accounting for the short scale length of PMD.