Abstract
This chapter deals with (online) operation of dynamic fiber optical transmission networks. In the first section the network architecture of an optical core network is described, followed by the presentation of the demand model. Afterwards the concept of constraint-based routing considering physical-layer impairments is explained, and a possible implementation is shown. Furthermore, a heuristic for sparse placement of OEO regenerators is outlined. The section is completed by the presentation of simulation results for physical layer impairment (PLI) aware routing and wavelength assignment in a European reference topology. Beyond that the possible reduction of the required number of regenerators by PLI-aware routing is shown. In Sect. 5.4 a concept of considering physical-layer impairments in transmission systems with higher bit rates and novel modulation formats is sketched. Section 5.5 deals with the reduction of the energy consumption in an optical core network by dynamic adaptation to the traffic load changes, which occur on a daily basis. A summary and a discussion are given at the end of this chapter.
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Pachnicke, S. (2012). Dynamic Operation of Fiber Optical Transmission Networks. In: Fiber-Optic Transmission Networks. Signals and Communication Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21055-6_5
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DOI: https://doi.org/10.1007/978-3-642-21055-6_5
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