期刊
OPTICS LETTERS
卷 37, 期 5, 页码 875-877出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.37.000875
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资金
- DARPA
- Center for Nanoscale Systems
- NSF [ECS-0335765]
- New York State Foundation for Science, Technology, and Innovation
- Division Of Physics
- Direct For Mathematical & Physical Scien [0969996] Funding Source: National Science Foundation
By fabricating high-Q silicon-nitride spiral resonators, we demonstrate frequency combs spanning over 200 nm with free spectral ranges (FSRs) of 80, 40, and 20 GHz using cascaded four-wave mixing. We characterize the RF beat note for the 20 GHz FSR comb, and the measured linewidth of 3.6 MHz is consistent with thermal fluctuations in the resonator due to amplitude noise of the pump source. These combs represent an important advance towards developing a complementary metal-oxide-semiconductor (CMOS)-based system capable of linking the optical and electronic regimes. (C) 2012 Optical Society of America
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