An Effective Routing Strategy Through Impairment-Aware RWA in Transparent Optical Network

In this paper, a dynamic impairment-aware Routing and Wavelength Assignment (RWA) algorithm is proposed to efficiently provide signal-quality-guaranteed connections and achieve lower blocking probability in all-optical Wavelength Division Multiplexing (WDM) network with high speed optical channel. In the all-optical network, optical connection is set up to carry data signal from source node to destination node without Optical-Electrical-Optical (OEO) conversion via all-optical lightpath. During the travel, the signal transmitted along the lightpath must pass through a number of optical components, such as optical amplifiers, Optical CROSSConnect switches (OXCs) and fiber segments.