Passive harmonic mode locking of soliton bunches in a fiber ring laser |
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| Authors: | L. M. Zhao D. Y. Tang T. H. Cheng C. Lu H. Y. Tam X. Q. Fu S. C. Wen |
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| Affiliation: | (1) School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore;(2) Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;(3) Department of Electrical Engineering, Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;(4) School of Computer and Communication, Hunan University, 410082 Changsha, People’s Republic of China |
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| Abstract: | We report on the experimental observation of passive harmonic mode locking of bunches of single-pulse solitons or twin-pulse solitons in an Erbium-doped fiber ring laser. Experimental investigations on the phenomenon revealed that, although the soliton interaction between the adjacent single-/twin-pulse solitons in a bunch is weaker than that of the pulse interaction in the twin-pulse solitons, a soliton bunch could also function as a unit and form the state of passively harmonic mode-locking. Harmonic mode-locking is one of the intrinsic characteristics of soliton emission in passively mode-locked fiber ring lasers. It can be formed based on the single-pulse soliton, twin-pulse soliton, or bunch of solitons. |
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| Keywords: | Fiber laser Harmonic mode locking Soliton bunches |
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