Dual-pump Kerr micro-cavity optical frequency comb with varying FSR spacing

Wang, Weiqiang, Chu, Sai T, Little, Brent E, Pasquazi, Alessia, Wang, Yishan, Wang, Leiran, Zhang, Wenfu, Wang, Lei, Hu, Xiaohong, Wang, Guoxi, Hu, Hui, Su, Yulong, Li, Feitao, Liu, Yuanshan and Zhao, Wei (2016) Dual-pump Kerr micro-cavity optical frequency comb with varying FSR spacing. Scientific Reports, 6. ISSN 2045-2322

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Abstract

In this paper, we demonstrate a novel dual-pump approach to generate robust optical frequency comb with varying free spectral range (FSR) spacing in a CMOS-compatible high-Q micro-ring resonator (MRR). The frequency spacing of the comb can be tuned by an integer number FSR of the MRR freely in our dual-pump scheme. The dual pumps are self-oscillated in the laser cavity loop and their wavelengths can be tuned flexibly by programming the tunable filter embedded in the cavity. By tuning the pump wavelength, broadband OFC with the bandwidth of >180nm and the frequency-spacing varying from 6 to 46-fold FSRs is realized at a low pump power. This approach could find potential and practical applications in many areas, such as optical metrology, optical communication, and signal processing systems, for its excellent flexibility and robustness.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0350 Optics. Light
Depositing User: Alessia Pasquazi
Date Deposited: 29 Sep 2016 12:22
Last Modified: 06 Mar 2017 13:43
URI: http://sro.sussex.ac.uk/id/eprint/63709

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