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1989•Electronics LettersRequires access

Nonlinear distortion due to optical amplifiers in subcarrier-multiplexed lightwave communications systems

Adel A. M. Saleh, T.E. Darcie, R.M. Jopson

Open publisher page 23 citations

Abstract

We show that an optically amplified, subcarrier-modulated lightwave signal suffers both a compression of the optical modulation indices and second-order nonlinear distortion (NLD). Expressions are derived which show that the NLD can seriously degrade performance, unless the lowest subcarrier frequency is larger than several gigahertz. System implications of these effects are discussed.

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What this paper is about

We show that an optically amplified, subcarrier-modulated lightwave signal suffers both a compression of the optical modulation indices and second-order nonlinear distortion (NLD). Expressions are derived which show that the NLD can seriously degrade performance, unless the lowest subcarrier frequency is larger than several gigahertz. System implications of these effects are discussed.

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OpenAlex reports 23 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

We show that an optically amplified, subcarrier-modulated lightwave signal suffers both a compression of the optical modulation indices and second-order nonlinear distortion (NLD). Expressions are derived which show that the NLD can seriously degrade performance, unless the lowest subcarrier frequency is larger than several gigahertz. System implications of these effects are discussed.

Key concepts: Subcarrier, Subcarrier multiplexing, Nonlinear distortion, Distortion (music), Amplifier, Modulation (music), Electronic engineering, Nonlinear system

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