Paper Info
Title
Assessment of Flex-Grid/MCF Optical Networks with ROADM limited core switching capability
Abstract
The majority of the research studies on Flex-Grid over multi-core fiber (Flex-Grid/MCF) networks are built on the assumption of fully non-blocking ROADMs (FNB-ROADMs), able to switch any portion of the spectrum from any input core of any input fiber to any output core of any output fiber. Such flexibility comes at an enormous extra hardware cost. In this paper, we explore the trade-off of using ROADMs that impose the so-called core continuity constraint (CCC). Namely, a CCC-ROADM can switch spectrum from a core on an input fiber to a chosen output fiber, but cannot choose the specific output core. For instance, if all fibers have the same number of cores, the i-th core in the input fibers can be just switched to the i-th core in the output fibers. To evaluate the performance vs. cost trade-off of using CCC-ROADMs, we present two Integer Linear Programming (ILP) formulations for optimally allocating incoming demands in Flex-Grid/MCF networks, where the CCC constraint is imposed or not, respectively. A set of results are extracted applying both schemes in two different backbone networks. Transmission reach estimations are conducted accounting for the fiber's linear and non-linear effects, as well as the inter-core crosstalk (ICXT) impairment introduced by laboratory MCF prototypes of 7, 12 and 19 cores. Our numerical evaluations show that the performance penalty of CCC is minimal, i.e., below 1% for 7 and 12-core MCF and up to 10% for 19-core MCF, while the cost reduction is large. In addition, results reveal that the ICXT effect can be significant when the number of cores per MCF is high, up to a point that equipping the network with 12-core MCFs can yield superior effective capacity than with 19-core MCFs.
Year
DOI
Venue
2017
10.23919/ONDM.2017.7958556
2017 International Conference on Optical Network Design and Modeling (ONDM)
Keywords
Field
DocType
Space Division Multiplexing,Flex-Grid,Multi-Core Fiber,inter-core Cross-Talk,ROADM,core switching
Topology,Fiber,Crosstalk,Computer science,Flex grid,Real-time computing,Integer programming,Space division multiplexing,Multi core fiber,Grid,Cost reduction,Distributed computing
Conference
ISBN
Citations 
PageRank 
978-1-5090-4006-3
2
0.39
References 
Authors
4
6
Name
Order
Citations
PageRank
R. Rumipamba-Zambrano1113.13
F.-J. Moreno-Muro220.39
Pablo Pavón-Mariño39820.58
Jordi Perelló411925.62
Salvatore Spadaro520539.91
Josep Solé-pareta643658.67