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Noise suppression of incoherent light using a gain-saturated SOA: Implications for spectrum-sliced WDM systems

McCoy, AD; Horak, P; Thomsen, BC; Ibsen, M; Richardson, DJ; (2005) Noise suppression of incoherent light using a gain-saturated SOA: Implications for spectrum-sliced WDM systems. J LIGHTWAVE TECHNOL , 23 (8) 2399 - 2409. 10.1109/JLT.2005.852023. Green open access

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Abstract

In this paper, we present an experimental and numerical study of semiconductor optical amplifier (SOA)-based noise suppression and its relevance to high-channel-density spectrum-sliced wavelength-division-multiplexed systems. We show that the improvement in signal quality is accompanied by spectral distortion, which renders it susceptible to deterioration in the presence of subsequent optical filtering. This phenomenon originates from the loss of intensity correlation between spectral components of the SOA output when the signal spectrum is altered. As a consequence, a design tradeoff is introduced between intensity noise and crosstalk in high-channel-density systems. These adverse effects can be overcome by optimized SOA design, resulting in a significant improvement in signal quality.

Type: Article
Title: Noise suppression of incoherent light using a gain-saturated SOA: Implications for spectrum-sliced WDM systems
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JLT.2005.852023
Keywords: optical noise, semiconductor optical amplifier (SOA), spectrum slicing, wavelength-division multiplexing (WDM), SEMICONDUCTOR OPTICAL AMPLIFIERS, INTENSITY NOISE, REDUCTION, TRANSMISSION
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/13225
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