Abstract

An optoelectronic oscillator (OEO) scheme based on an electroabsorption modulated laser (EML) is proposed and experimentally demonstrated. The oscillation conditions and a complete phase noise model for the EML-based OEO are detailed. A 20-GHz microwave signal with a side-mode suppression ratio of 42 dB is generated and evaluated. The corresponding single sideband phase noise with a 1-km and 4-km fiber used in the loop is respectively measured to be $-110.2\mathrm{dBc}/\mathrm{Hz}$ and $-114.8\mathrm{dBc}/\mathrm{Hz}$ at 10 kHz offset frequency. The experimental phase noise results agree well with the theoretical results in an offset frequency range from 100 Hz to 10 MHz.

© 2019 Optical Society of America

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