Experimental Design of a Low Phase Noise Coupled Optoelectronic Oscillator at 10 GHz
Abstract
We present an experimental study on two key elements to design a low phase noise coupled optoelectronic oscillator (COEO). Fiber lengths and dispersions are investigated to highlight the differences between the optical and optoelectronic loops. After optimization, a 10 GHz COEO at 1.5 μm with a total of 590 m of fiber exhibits phase noise levels of -125 dBc/Hz at 1 kHz and -140 dBc/Hz at 10 kHz.