Analysis of the dynamic response of a ring resonator to a time-varying input signal.
An analysis of the time-dependent response of an all-fiber ring resonator is given in which the ring is illuminated by a phase-modulated input beam. The resonator is operated as a high-resolution scanning spectrometer and has a demonstrated optical resolution of 20 kHz for a single-frequency cw source. Unusual effects are observed when the ring is used to measure the spectrum of an optical signal subject to frequency or phase modulation.
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