Title
Wavelength layer recovery in transparent optical networks
Abstract
Ultra-high capacity transmission systems utilizing dynamic photonic switches enable transparent networking with reduced optoelectronic conversions and simplified and automated operations and maintenance. Due to recent advances in control functions for wavelength switching in optical networks, network service providers envision the same level of automated connection provisioning and restoration capabilities at the wavelength layer as offered by time division multiplexing (TDM) or packet switched networks. Implementing Generalized Multiprotocol Label Switching (GMPLS), transparent networks can offer a high level of reliability with automatic restoration as well as reduced resources compared to legacy 1 + 1 protection mechanisms. Based on pre-planned path computation, selection, signaling, and allocation of optical resources, three recovery schemes are described in the context of the wavelength connections: protection, dynamic restoration, and a combination of protection and restoration. Through the use of network simulations, we analyze the impact of transparency constraints such as optical switch activation delay and sequential light path establishment on the recovery time. This analysis includes the trade-off between different recovery strategies and transmission system reach. © 2010 Alcatel-Lucent.
Year
DOI
Venue
2010
10.1002/bltj.v14:4
Bell Labs Technical Journal
Keywords
Field
DocType
optical resource,transparent network,optical switch activation delay,recovery scheme,optical network,restoration capability,automatic restoration,dynamic restoration,protection mechanism,wavelength layer recovery,transparent optical network,different recovery strategy
Transparency (graphic),Optical switch,Multiprotocol Label Switching,Computer network,Electronic engineering,Provisioning,Optical performance monitoring,Transmission system,Engineering,Time-division multiplexing,Photonics
Journal
Volume
Issue
ISSN
14
4
1089-7089
Citations 
PageRank 
References 
1
0.39
6
Authors
4
Name
Order
Citations
PageRank
Annalisa Morea115112.85
Daniel C. Kilper237927.59
Dominique Verchère3509.20
Richard Douville4273.11