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🏛️國立陽明交通大學機構典藏

Author: search.filters.author.LIN, GRSubject: search.filters.subject.ELECTROOPTIC SAMPLING

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    OPTOELECTRONIC PHASE-TRACKING AND WAVE-FORM DISPLAY OF MICROWAVE SIGNALS UP TO 8 GHZ USING GAIN-SWITCHED LASER-DIODES
    (1994-05-15)
    WU, HH
    ;
    WANG, CL
    ;
    LIN, GR
    ;
    CHANG, CS
    ;
    PAN, CL
    We present a new, more versatile scheme for maintaining phase coherence between optical probe pulses and microwave signals under test in a laser-diode-based optoelectronic sampling system. This approach takes advantage of the relative ease of changing the repetition rate of the gain-switched laser diode (GSLD). The microwave signal to be sampled is used as the clock signal for phase-locking of a voltage controlled-oscillator (VCO) which drives the GSLD. Phase-tracking and display of waveforms at frequencies up to 8 GHz have been realized. It is also shown that lower phase noise sidebands for the phase-locked VCO can be realized by locking the higher harmonics of the laser pulse to the microwave clock.