查看更多>>摘要：An approach for frequency division of an optical pulse train[OPT]based on an optoelectronic oscillator[OEO]is proposed and experimentally demonstrated.When the OPT is injected into the OEO,a microwave signal with a frequency equaling fractional multiples of the repetition rate of the OPT is generated.This signal is then fed back to the OEO,maintaining its oscillation,while simultaneously serving as the control signal of a Mach-Zehnder modulator[MZM]in the OEO.The MZM acts as an optical switch,permitting specific pulses to pass through while blocking others.As a result,the repetition rate of the OPT is manipulated.A proof-of-concept experiment is carried out.Frequency division factors of 2 and 3 are successfully achieved.The phase noises of the OPT before and after the frequency division are investigated.Compared to previously reported systems,no external microwave source and sophisticated synchronization structure are needed.
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