Network expansion strategy for elastic optical networks that considers channel capacity upgrades

Takuma Yasuda; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato

doi:10.1117/12.2250489

28 January 2017 Network expansion strategy for elastic optical networks that considers channel capacity upgrades

Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 10129, Optical Metro Networks and Short-Haul Systems IX; 1012909 (2017) https://doi.org/10.1117/12.2250489
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We propose introducing aligned frequency assignment to each bandwidth channel, i.e., the semi-flexible grid, with the goal of minimizing frequency slot fragmentation under dynamic flexible-grid network expansion considering the expected need for channel capacity upgrades. In semi-flexible grid networks, for each set of channels having the same frequency bandwidth, a regular grid is defined where its spacing is the same as the required bandwidth and channels are aligned to their corresponding grids. A network expansion algorithm is developed that maximizes the efficiency of semiflexible grid assignment to achieve efficient channel bandwidth upgrading. Numerical experiments prove that the number of fibers necessary and the degree of fragmentation in the frequency domain are reduced by 15% and 80%, respectively, compared to conventional flexible grid networks accommodating the same traffic.

Citation Download Citation

Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato "Network expansion strategy for elastic optical networks that considers channel capacity upgrades", Proc. SPIE 10129, Optical Metro Networks and Short-Haul Systems IX, 1012909 (28 January 2017); https://doi.org/10.1117/12.2250489

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