Tapered fiber based Brillouin random fiber laser and its application for linewidth measurement

被引：23

作者：

Gao, Song ^{[1
]}

Zhang, Liang ^{[1
]}

Xu, Yanping ^{[1
]}

Lu, Ping ^{[1
]}

Chen, Liang ^{[1
]}

Bao, Xiaoyi ^{[1
]}

机构：

[1] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 25期

基金：

加拿大自然科学与工程研究理事会;

关键词：

RAYLEIGH-SCATTERING; FREQUENCY-NOISE; FEEDBACK; GENERATION; RESOLUTION; RESONATOR;

D O I：

10.1364/OE.24.028353

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A one-end pumping Brillouin random fiber laser (BRFL) based on a 5-km tapered fiber (TF) is demonstrated. The enhanced Rayleigh scattering and the increased power density from tapering in the TF provide good directionality and a high degree of coherent feedback. Both the transmitting and TF enhanced Rayleigh scattered pump lights formed effective bi-direction pumping for the Brillouin gain in the standing cavity configuration in the distributed way as the gain and random feedback in the same fiber. The linewidth of the laser shows similar to 1.17 kHz while the relative intensity noise (RIN) has been verified to be suppressed comparing with that of the two-end pumping of the standard single mode fiber (SMF). Furthermore, utilizing the proposed laser, a high-resolution (similar to kHz) linewidth measurement method is demonstrated without long delay fiber (>100km) and extra frequency shifter thanks to the acoustic frequency shift from fiber itself. (C) 2016 Optical Society of America

引用

页码：28353 / 28360

页数：8

共 22 条

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