Dynamical instabilities in opto-electronic ultra-pure microwave generators

An interesting alternative to reduce phase noise is the generation of ultre-pure microwave frequencies with opto-electronic oscillators (OEOs). The originality of OEOs is that energy is stored in a very long delay line instead of a high-finesse resonator. Beyond the scope of continuous-wave radars, OEOs can generate ultra-pure microwaves for many other applications, ranging from satellite telecommunication systems to ultra-low jitter clocks and laser pulses.