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arXiv · 1303.2163

Feedback and harmonic locking of slot-type optomechanical oscillators to external low-noise reference clocks

Jiangjun Zheng·Ying Li·Noam Goldberg·Mickey McDonald·Xingsheng Luan·Archita Hati·Ming Lu·Stefan Strauf·Tanya Zelevinsky·David A. Howe·Chee Wei Wong
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Abstract

We demonstrate feedback and harmonic locking of chip-scale slot-type optomechanical oscillators to external low-noise reference clocks, with suppressed timing jitter by three orders of magnitude. The feedback and compensation techniques significantly reduce the close-to-carrier phase noise, especially within the locking bandwidth for the integral root-mean-square timing jitter. Harmonic locking via high-order carrier signals is also demonstrated with similar phase noise and integrated root-mean-square timing jitter reduction. The chip-scale optomechanical oscillators are tunable over an 80-kHz range by tracking the reference clock, with potential applications in tunable radio-frequency photonics platforms.

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Jiangjun Zheng, Ying Li, Noam Goldberg, Mickey McDonald, Xingsheng Luan, Archita Hati, Ming Lu, Stefan Strauf, Tanya Zelevinsky, David A. Howe, Chee Wei Wong. 2013-03-09. Feedback and harmonic locking of slot-type optomechanical oscillators to external low-noise reference clocks. https://doi.org/10.1063/1.4801473

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