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Observation of controllable tightly and loosely bound solitons with an all-fiber saturable absorber

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Abstract

A hybrid no-core fiber (NCF)–graded index multimode fiber (GIMF) structure is used as a saturable absorber (SA) for mode-locked laser operation. Such an SA supports various types of soliton outputs. By changing the cavity parameters, not only the spatiotemporal mode-locking states with a stable single pulse but also tightly and loosely bound solitons are generated. Single 35.5 pJ solitons centered at 1568.5 nm have a 4 nm spectral full-width at half-maximum and an 818 fs temporal duration. Tightly bound soliton pairs with continuously tunable wavelength from 1567.48 nm to 1576.20 nm, featured with an ~700 fs pulse train with a separation of 2.07 ps, have been observed by stretching the NCF-GIMF structured device. Meanwhile, several different pulse separations from 37.57 ps to 56.46 ps of loosely bound solitons have also been realized. The results provide help in understanding the nonlinear dynamics in fiber lasers.

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DOI:10.1364/prj.7.000061

所属栏目:Nonlinear Optics

收稿日期:2018-10-11

录用日期:2018-11-15

网络出版日期:2018-11-19

作者单位    点击查看

Tianyu Zhu:College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
Zhaokun Wang:College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, Chinae-mail: 16a0402091@cjlu.edu.cn
D. N. Wang:College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
Fan Yang:College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
Liujiang Li:College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China

联系人作者:D. N. Wang(dnwang@cjlu.edu.cn)

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引用该论文

Tianyu Zhu, Zhaokun Wang, D. N. Wang, Fan Yang, and Liujiang Li, "Observation of controllable tightly and loosely bound solitons with an all-fiber saturable absorber," Photonics Research 7(1), 61-68 (2019)

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