期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 32, 期 20, 页码 3557-3565出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2014.2312359
关键词
Kerr effect; microwave filters; microwave photonics; optical frequency combs; optical resonators
资金
- National Science Foundation [ECCS-1102110]
- Air Force Office of Scientific Research [FA9550-12-1-0236]
- DARPA PULSE program from AMRDEC [W31P40-13-1-0018]
- Office of the Assistant Secretary of Defense for Research and Engineering under the National Security Science and Engineering Faculty Fellowship from the Naval Postgraduate School [N00244-09-1-0068]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1102110] Funding Source: National Science Foundation
Microresonators with a high Kerr nonlinearity show great potential to generate optical frequency combs with ultra-broad spectra, high repetition rate, and high coherence between comb lines. The compact size and possibility of chip-level integration make the Kerr combs attractive for many applications, especially including photonic radiofrequency (RF) filters. In this paper we report the first demonstration of a programmable photonic RF filter based on the Kerr comb from a silicon nitride microring. A novel scheme enabled by the large frequency spacing of the Kerr comb is introduced in order to suppress unwanted RF passbands including the image and periodic passbands. As a result, a single passband is achieved. To the best of our knowledge, this is the first demonstration of a single-bandpass photonic RF filter employing a discrete-wavelength comb source.
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