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

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posted on 2023-06-09, 03:11 authored by Weiqiang Wang, Sai T Chu, Brent E Little, Alessia Pasquazi, Yishan Wang, Leiran Wang, Wenfu Zhang, Lei Wang, Xiaohong Hu, Guoxi Wang, Hui Hu, Yulong Su, Feitao Li, Yuanshan Liu, Wei Zhao
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.

History

Publication status

  • Published

File Version

  • Published version

Journal

Scientific Reports

ISSN

2045-2322

Volume

6

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-09-29

First Open Access (FOA) Date

2016-09-29

First Compliant Deposit (FCD) Date

2016-09-29

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