title: Optical-RF frequency stability transformer.
abstract: An optical technique based on stability transfer among modes of a monolithic optical microresonator is proposed for long term frequency stabilization of a radio frequency (RF) oscillator. We show that locking the frequency difference of two microresonator modes with dissimilar sensitivity to an applied forcing function to a master RF oscillator improves the long term stability of a slave RF oscillator locked to the frequency difference of another pair of modes with nearly identical sensitivity to the same forcing function. For instance, the stability of a 10 MHz master oscillator with Allan deviation of 10(-7) at 10(3) s can be improved and transferred to a slave oscillator with identical free running stability performance, so that the resultant Allan deviation of the slave oscillator becomes equal to 10(-13) at 10(3) s. The suggested method does not require absolute frequency references.
authors.affiliation: OEwaves Inc., 2555 East Colorado Boulevard, Pasadena, California 91107, USA. andrey.matsko@oewaves.com
authors.forename: A B
authors.initials: AB
authors.lastname: Matsko
authors.forename: A A
authors.initials: AA
authors.lastname: Savchenkov
authors.forename: V S
authors.initials: VS
authors.lastname: Ilchenko
authors.forename: D
authors.initials: D
authors.lastname: Seidel
authors.forename: L
authors.initials: L
authors.lastname: Maleki