A compact frequency-doubling opto-electronic oscillator using cascaded electroabsorption modulators

摘要

A 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 degrees 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. (c) 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:526-529, 2016