Channel Frequency Optimization in Optical Networks Based on Gaussian Noise Model

Cao Chen (1, 2, 3) , Fen Zhou (2, 3) , Yuanhao Liu (4, 2, 3) , Shilin Xiao (1)

1 Shanghai Jiao Tong University [Shanghai]
2 ISEP - Institut Supérieur d'Electronique de Paris
3 LIA - Laboratoire Informatique d'Avignon
4 Xidian University

To make the most of limited spectrum resources in optical fibers, we propose to improve the quality of transmission leveraging the optimization of channel center frequencies in optical networks with flex-grid. For point-to-point communication, we first compute the optimal transmit power that minimizes the physical layer impairment (PLI) by using the Gaussian Noise (GN) model. We then derive the theoretical PLI-aware provisioning capacity in fixed-grid optical networks and further formulate an optimization model that can estimate the maximum number of requests that can be provisioned in flex-grid optical networks. Numerical simulation results reveal that with the help of channel center frequency optimization, 8.7% capacity improvement can be achieved in flex-grid optical networks. The SNR margin improvement is also demonstrated in both point-to-point optical communication and optical rings.

Mots clés: Index terms-Flexible Optical Networks; Physical Layer Impairment; Frequency Optimization; Fixed-Grid; Flex-Grid

Domaines: Réseaux et télécommunications [cs.NI]

Cao Chen, Fen Zhou, Yuanhao Liu, Shilin Xiao. Channel Frequency Optimization in Optical Networks Based on Gaussian Noise Model. 24TH IFIP INTERNATIONAL CONFERENCE ON OPTICAL NETWORK DESIGN AND MODELLING (ONDM'20), May 2020, Barcelone, Spain. ⟨hal-02532966⟩