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 dBc/Hz and -114.8 dBc/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. (c) 2019 Optical Society of America.
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