| Autor: |
Kenig, Eyal, Cross, M. C., Lifshitz, Ron, Karabalin, R. B., Villanueva, L. G., Matheny, M. H., Roukes, M. L. |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. Lett. 108 (2012) 264102 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.108.264102 |
| Popis: |
We introduce a new method for reducing phase noise in oscillators, thereby improving their frequency precision. The noise reduction device consists of a pair of coupled nonlinear resonating elements that are driven parametrically by the output of a conventional oscillator at a frequency close to the sum of the linear mode frequencies. Above the threshold for parametric response, the coupled resonators exhibit self-oscillation at an inherent frequency. We find operating points of the device for which this periodic signal is immune to frequency noise in the driving oscillator, providing a way to clean its phase noise. We present results for the effect of thermal noise to advance a broader understanding of the overall noise sensitivity and the fundamental operating limits. |
| Databáze: |
arXiv |
| Externí odkaz: |
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