Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping

Kazuya Okamura; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato

doi:10.1117/12.2544195

31 January 2020 Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping

Kazuya Okamura, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 11308, Metro and Data Center Optical Networks and Short-Reach Links III; 113080E (2020) https://doi.org/10.1117/12.2544195
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

The introduction of quasi-Nyquist wavelength-division multiplexing (WDM) reduces unused frequency resources and hence attains high spectral efficiency. Applying quasi-Nyquist WDM to optical-path networks using wavelengthselective switches (WSSs) is hindered by two factors: the limited bandwidth resolution of WSS passbands and the significant spectrum narrowing occasioned by WSS traversal. In this paper, we propose a novel quasi-Nyquist WDM network architecture, where the bundle-based wavelength assignment and receiver-side partial-response spectrum shaping are simultaneously utilized so as to resolve the two problems. Extensive computer simulations show that the proposed network architecture increases the maximum attainable node-hop count compared to the conventional transmission systems.

Citation Download Citation

Kazuya Okamura, Yojiro Mori, Hiroshi Hasegawa, and Ken-ichi Sato "Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping", Proc. SPIE 11308, Metro and Data Center Optical Networks and Short-Reach Links III, 113080E (31 January 2020); https://doi.org/10.1117/12.2544195

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