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Excursion-Free Dynamic Wavelength Switching in Amplified Optical Networks

2015; Volume: 7; Issue: 9 Linguagem: Inglês

10.1364/jocn.7.000898

1943-0639

Atiyah Ahsan, Colm Browning, Michael S. Wang, Keren Bergman, Daniel C. Kilper, Liam P. Barry,

Advanced Photonic Communication Systems

Dynamic optical networking with rapid wavelength reconfiguration is a promising capability to support the heterogeneous, bursty traffic rapidly growing in metro-area networks. A major obstacle to realizing dynamicity in the optical layer is the channel power excursions that occur due to continuously changing input conditions into gain controlled optical amplifiers. Here we present a technique of distributing an optical signal across multiple wavelengths chosen to reduce or cancel the power dynamics so that excursion-free switching can be achieved in an optically amplified transparent network. The use of variable wavelength dwell times for excursion-free switching using arbitrary wavelength pairs is presented. Spectral efficiency lost in utilizing multiple wavelengths is recovered through time-division multiplexing two signals distributed over the same wavelengths.