Title :
Wavelength-Routing Capability of Reconfigurable Optical Add/Drop Multiplexers in Dynamic Optical Networks
Author :
Tang, J.M. ; Shore, K. Alan
Author_Institution :
Sch. of Informatics, Univ. of Wales, Bangor
Abstract :
According to their underlying switching technologies, reconfigurable optical add/drop multiplexers (ROADMs) can be classified into three categories: Category I consists of a single large optical switch; category II is composed of a number of small optical switches aligned in parallel; and category III has a single optical switch and only one wavelength being added/dropped. To evaluate the wavelength-routing capability of ROADMs of various categories in dynamic optical networks, a theoretical routing-power model is developed, taking into account different ROADM architectures and dynamic traffic. Numerical simulations show that different category ROADMs differ considerably in their wavelength-routing capabilities, which are significantly dependent upon dynamic traffic. It is also observed that among these three ROADM architectures, category I (III) ROADMs offer the greatest (lowest) wavelength-routing capability and the lowest (highest) susceptibility to dynamic traffic. In particular, to maximize the ROADM-based network flexibility and connectivity, a set of practically applicable criteria is identified on designing/choosing optimum ROADMs for given dynamic optical networks
Keywords :
multiplexing equipment; optical communication equipment; optical fibre networks; optical switches; telecommunication network routing; telecommunication traffic; ROADM; dynamic optical networks; optical switch; reconfigurable optical add/drop multiplexers; wavelength routing; Add-drop multiplexers; Arrayed waveguide gratings; High speed optical techniques; Optical add-drop multiplexers; Optical fiber networks; Optical signal processing; Optical switches; Telecommunication traffic; Traffic control; Wavelength division multiplexing; Optical add/drop multiplexing (OADM); photonic network; wavelength division multiplexing (WDM); wavelength routing;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.883662