Title :
Experimental Demonstration of Adaptive Combinational QoT Degradation Restoration in Elastic Optical Networks
Author :
Xinran Cai ; Ke Wen ; Proietti, Roberto ; Yawei Yin ; Geisler, D.J. ; Scott, Ryan P. ; Chuan Qin ; Paraschis, L. ; Gerstel, O. ; Yoo, S.J.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, Davis, Davis, CA, USA
Abstract :
We propose and demonstrate an adaptive quality of transmission (QoT) restoration scheme combining the methods of lightpath rerouting and modulation-format switching to overcome real-time impairments in elastic optical networks. A hybrid objective algorithm is designed to minimize the spectral consumption and the interference that the rerouting imposes on the other parts of the network. Simulation results show the algorithm achieved more than 50% reduction in blocking probability and 75% decrease in the spectral consumption on the bypass links compared with the rerouting-only method. Testbed experiments demonstrated successful real-time QoT restoration in the presence of time-varying optical signal-to-noise ratio impairment for two simultaneously impaired 100 and 200 Gb/s quaternary phase-shift keying superchannels.
Keywords :
interference; optical fibre networks; optical modulation; phase shift keying; probability; telecommunication network routing; telecommunication switching; adaptive combinational quality of transmission degradation restoration; bit rate 100 Gbit/s; bit rate 200 Gbit/s; blocking probability; elastic optical network; hybrid objective algorithm; interference minimisation; lightpath rerouting; modulation-format switching; quaternary phase-shift keying superchannel; spectral consumption minimisation; Bandwidth; Binary phase shift keying; Bit error rate; Interference; Optical fiber networks; Elastic optical networking; impairment aware networking; network control plane; quality of transmission (QoT) restoration;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2227455
