Ultra-low noise microwave signal generation with an optical frequency comb

Photonic synthesis of radio frequency waveforms revived the quest for unrivalled microwave purity by its seducing ability to convey the benefits of the optics to the microwave world. In this contribution, we will present a high-fidelity transfer of frequency stability between an optical reference and a microwave signal via a low-noise fiber-based frequency comb and cutting-edge photo-detection techniques. We will show the generation of the purest microwave signal with a fractional frequency stability below 6.5 x 10(-16) at 1 s and a timing noise floor below 41 zs Hz(-1/2) (phase noise below-173 dBc Hz(-1) for a 12 GHz carrier). This outclasses existing sources and promises a new era for state-of-the-art microwave generation. The characterization is achieved through a heterodyne cross-correlation scheme with lowermost detection noise. This unprecedented level of purity can impact domains such as radar systems, telecommunications and time-frequency metrology. The measurements methods developed here can benefit the characterization of a broad range of signals.


Published in:
Laser Resonators, Microresonators, And Beam Control Xx, 10518, UNSP 105180N
Presented at:
20th Conference on Laser Resonators, Microresonators and Beam Control, San Francisco, CA, Jan 29-Feb 01, 2018
Year:
Jan 01 2018
Publisher:
Bellingham, SPIE-INT SOC OPTICAL ENGINEERING
ISSN:
0277-786X
1996-756X
ISBN:
978-1-5106-1522-9
Keywords:
Laboratories:




 Record created 2019-01-01, last modified 2019-02-24


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