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 >180 nm 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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang W,Chu ST,Little BE,Pasquazi A,Wang Y,Wang L,Zhang W,Wang L,Hu X,Wang G,Hu H,Su Y,Li F,Liu Y,Zhao Wdoi
10.1038/srep28501subject
Has Abstractpub_date
2016-06-24 00:00:00pages
28501issn
2045-2322pii
srep28501journal_volume
6pub_type
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