Femtosecond Soliton Erbium-Doped Fiber Laser With a Symmetrical GIMF-SIMF-GIMF Saturable Absorber

被引：16

作者：

Wu, Qian-Chao ^{[1
]}

Zou, Zhi-Ming ^{[1
]}

Yao, Yong ^{[1
]}

Shi, Jie ^{[1
]}

Wu, Chong-Hao ^{[1
]}

Yang, Yan-Fu ^{[1
]}

Tian, Jia-Jun ^{[1
]}

Xu, Ke ^{[1
]}

机构：

[1] Harbin Inst Technol Shenzhen, Sch Elect & Informat Engn, Shenzhen 518055, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Femtosecond soliton; mode-locked fiber lasers; nonlinear multimode interference; ultrafast fiber lasers; NONLINEAR MULTIMODAL INTERFERENCE; HARMONIC MODE-LOCKING; SMF;

D O I：

10.1109/JPHOT.2019.2950379

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A femtosecond soliton erbium-doped fiber ring laser with the symmetrical saturable absorber (SA) of graded index multimode fiber-step index multimode fiber-graded index multimode fiber (GIMF-SIMF-GIMF) is proposed and proved. Based on the nonlinear multimode interference (NL-MMI) effect of SA, the fiber laser achieved femtosecond soliton mode-locking operation and repetition rate tuning. The duration of soliton was 364 fs at 1562.5 nm and repetition rate was tunable from 10.29 MHz to 763.36 MHz. In the structure of SA, a short step index multimode fiber (SIMF) was inserted between two graded index multimode fibers (GIMFs) to generate more high-order modes, adjust the self-focusing length, and improve operation stability of mode-locked fiber laser. The SA also has the advantages of immunity to the external environment variation, high damage threshold and inoxidizability, which make the laser operate stably for a long time.

引用

页数：9

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