Widely tunable ultra-narrow linewidth single-longitudinal-mode Brillouin fiber laser with low threshold

被引：9

作者：

Zhao, Junfa ^{[1
]}

Zhang, Cheng ^{[1
]}

Ji, Zhihua ^{[2
]}

Miao, ChangYun ^{[1
]}

Gu, Hong ^{[3
]}

Tong, Zhengrong ^{[2
]}

Sun, Xiaodong ^{[1
]}

Bai, Jinjun ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Sch Elect & Informat Engn, Tianjin 300387, Peoples R China

[2] Tianjin Univ Technol, Sch Comp & Commun Engn, Tianjin 300384, Peoples R China

[3] Tianjin Polytech Univ, Sch Sci, Tianjin 300387, Peoples R China

来源：

LASER PHYSICS | 2014年 / 24卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Brillouin fiber laser; single longitudinal mode; high-nonlinear fiber; tune range; PHOTONIC GENERATION; RING LASER; SCATTERING; NOISE; PUMP;

D O I：

10.1088/1054-660X/24/10/105102

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A widely tunable ultra-narrow linewidth single-longitudinal-mode Brillouin fiber laser (SLM-BFL) with low threshold is proposed and experimentally demonstrated by using a 205 m long high-nonlinear fiber (HNLF) as Brillouin gain media. The single-longitudinal-mode (SLM) operation is guaranteed by cascaded filters composed of a fiber ring Fabry-Perot filter and a self-induced narrow filter based on a 4 m unpumped erbium-doped fiber. Owing to the long ring cavity, the BFL has a low threshold of 12.8 mW and ultra-narrow linewidth of 0.29 kHz. The BFL can be tuned from 1532 to 1577 nm. The optical signal-to-noise ratio of the fiber laser is higher than 70 dB during the 45 nm tune range.

引用

页数：5

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