Abstract
ABSTRACTA compact frequency‐doubling optoelectronic oscillator (FD‐OEO) using two cascaded electro‐absorption modulators (EAMs) is proposed and experimentally demonstrated. The FD‐OEO is configured with two cascaded EAMs driven by signals having a 180° phase difference, so that the second EAM produces an output signal with a suppressed first‐order side band, thus generating a frequency doubled signal. The phase noise characteristics of the fundamental (10 GHz) and frequency‐doubled (20 GHz) signals are measured to be −94.25 dBc/Hz and −87.71 dBc/Hz, respectively, at a frequency offset of 10 kHz. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:526–529, 2016
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