RF-Photonic Frequency Stability Gear Box

Details RF-Photonic Frequency Stability Gear Box RF-Photonic Frequency Stability Gear Box

2011-11-16

arxiv.org/abs/1111.3906v1

Physics

Optics

3 pages, 1 figure, to appear in Optics Letters

Scientific paper

An optical technique based on stability transfer among modes of a monolithic optical microresonator is proposed for long therm frequency stabilization of a radiofrequency (RF) oscillator. We show that locking two resonator modes, characterized with dissimilar sensitivity in responding to an applied forcing function, to a master RF oscillator allows enhancing the long term stability of a slave RF oscillator locked to two resonator modes having nearly identical sensitivity. For instance, the stability of a 10 MHz master oscillator characterized with Allan deviation of 10^-7 at 10^4s can be increased and transferred to a slave oscillator with identical stability performance, so that the resultant Allan deviation of the slave oscillator becomes equal to 10-13 at 10^4s. The method does not require absolute frequency references to achieve such a performance.

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