Applied Sciences (Sep 2017)

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

  • Seán P. Ó Dúill,
  • Pascal Landais,
  • Liam P. Barry

DOI
https://doi.org/10.3390/app7090908
Journal volume & issue
Vol. 7, no. 9
p. 908

Abstract

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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.

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