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Appl. Sci. 2017, 7(9), 908; doi:10.3390/app7090908

Estimation of the Performance Improvement of Pre-Amplified PAM4 Systems When Using Multi-Section Semiconductor Optical Amplifiers

Radio and optics research laboratory, School of Electronic Engineering, Dublin City University, Dublin 9 D09 W6Y4, Ireland
Author to whom correspondence should be addressed.
Received: 1 August 2017 / Revised: 29 August 2017 / Accepted: 31 August 2017 / Published: 5 September 2017
(This article belongs to the Special Issue Applications of Semiconductor Optical Amplifiers)
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Multi-section semiconductor optical amplifiers (SOA) have been shown to have superior noise and linearity performance compared with single section SOAs. We show how to create a simplified numerical model for multi-section SOAs that is suitable for optical communication system simulations and use that model to investigate the amplification performance of 56 Gbit/s four-level pulse amplitude modulation signals. We find that a multi-section SOA could provide an improvement in input power dynamic range exceeding 3 dB compared to a single section SOA that has the same unsaturated gain. View Full-Text
Keywords: semiconductor optical amplifier; pulse amplitude modulation; noise semiconductor optical amplifier; pulse amplitude modulation; noise

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ó Dúill, S.P.; Landais, P.; Barry, L.P. Estimation of the Performance Improvement of Pre-Amplified PAM4 Systems When Using Multi-Section Semiconductor Optical Amplifiers. Appl. Sci. 2017, 7, 908.

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