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Dual-comb generation from a dual-ring hybrid mode-locked fiber laser
Author(s): Ruitao Yang; Hao Sun; Jiahao Guo; Haijin Fu; Hongxing Yang; Pengcheng Hu; Zhigang Fan; Jiubin Tan
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Paper Abstract

Dual-comb generation with bidirectional fiber ring laser is highly prospective for its compactness and coherency. In this paper, we propose a dual-ring hybrid mode-locked fiber laser for dual-comb generation. The dual-ring laser contains elements of hybrid mode-locking for each sub-ring individually, while sharing the bidirectionally pumped erbium-doped fiber (EDF). The hybrid mode-locking is realized by transmission semiconductor saturable absorber (SESA) and nonlinear polarization evolution (NPE). With the help of two three-port optical circulators, non-ideal reflection of two SESAs are eliminated. Accordingly, two series of short pules are generated in each sub-ring with different direction individually. Experimental observations and analyses demonstrate that dual comb of about 300 kHz difference in repetition rates are generated by inserting a 10 cm cavity length difference between the two sub-rings. With the help of hybrid mode-locking and large power bidirectional pumping, the mode-locking of dual combs are stable and self-starting.

Paper Details

Date Published: 7 March 2019
PDF: 6 pages
Proc. SPIE 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation, 1105324 (7 March 2019); doi: 10.1117/12.2511742
Show Author Affiliations
Ruitao Yang, Harbin Institute of Technology (China)
Hao Sun, Harbin Institute of Technology (China)
Jiahao Guo, Harbin Institute of Technology (China)
Haijin Fu, Harbin Institute of Technology (China)
Hongxing Yang, Harbin Institute of Technology (China)
Pengcheng Hu, Harbin Institute of Technology (China)
Zhigang Fan, Harbin Institute of Technology (China)
Jiubin Tan, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 11053:
Tenth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Jie Lin, Editor(s)

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