Mitigation of Dispersion and Turbulence in a Hybrid Optical Fibre and Free-Space Optics Link Using Electronic Equalisation

Nguyen, Dong-Nhat, Zvanovec, Stanislav and Ghassemlooy, Zabih (2019) Mitigation of Dispersion and Turbulence in a Hybrid Optical Fibre and Free-Space Optics Link Using Electronic Equalisation. Optik, 196. p. 163154. ISSN 0030-4026

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Official URL: https://doi.org/10.1016/j.ijleo.2019.163154

Abstract

Transmission of a 25 Gbps non-return to zero signal over a hybrid link of 20 km standard single-mode fibre and 500 m free-space optics under weak-to-moderate turbulence regimes is demonstrated via simulation to provide a practical solution for the last-mile access networks. Even though there are several complex mitigating methods to reduce the waveform distortions caused by both the fibre chromatic dispersion and atmospheric turbulence, we provide and discuss a simple approach using an electrical equalizer at the receiver. The simulation results demonstrate that, the proposed equalization technique offer about an order of magnitude improvement in the bit error rate at the received optical power of -20 dB m and a receiver sensitivity gain of 1.5 dB at the 7% forward error correction limit.

Item Type: Article
Uncontrolled Keywords: Optical access networks, chromatic dispersion, free-space optics, electronic equalization, atmospheric turbulence
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 09 Aug 2019 08:37
Last Modified: 11 Oct 2019 12:37
URI: http://nrl.northumbria.ac.uk/id/eprint/40288

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