Liu Lei, Casellas Ramon, Tsuritani Takehiro, Morita Itsuro, Okamoto Shuichi, Martínez Ricardo, Muñoz Raül
KDDI R&D Laboratories Inc., Fujimino-shi, Saitama, Japan.
Opt Express. 2011 Dec 19;19(27):26568-77. doi: 10.1364/OE.19.026568.
Dynamic lightpath restoration is a key issue in wavelength switched optical networks (WSON). On the other hand, the introduction of the path computation element (PCE) and the generalized multi-protocol label switching (GMPLS) architectures into WSON as control plane technologies is expected to bring more intelligence and to enable the dynamic computation and control of end-to-end lightpaths in a cost-efficient manner. In this paper, for the first time and through a lab trial with four domains and a field trial located in Japan and Spain, we experimentally present PCE-based optical signal to noise ratio (OSNR)-aware dynamic restoration in multi-domain GMPLS-enabled translucent WSON, assessing the overall feasibility of the proposed techniques and quantitatively evaluating the service disruption time and path computation latency during end-to-end lightpath restoration.
