Electrical feedforward replaces feedback control in optical frequency division, enabling -153 dBc/Hz phase noise at 10 GHz from free-running combs with femtosecond jitter and no servo bumps.
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Ultralow noise microwaves with free-running frequency combs and electrical feedforward
Electrical feedforward replaces feedback control in optical frequency division, enabling -153 dBc/Hz phase noise at 10 GHz from free-running combs with femtosecond jitter and no servo bumps.