kHz-order linewidth controllable 1550 nm single-frequency fiber laser for coherent optical communication

被引：44

作者：

Zhou, Kaijun ^{[1
,2
]}

Zhao, Qilai ^{[1
,2
,3
,4
]}

Huang, Xiang ^{[1
,2
]}

Yang, Changsheng ^{[1
,2
]}

Li, Can ^{[5
]}

Zhou, Enbo ^{[6
]}

Xu, Xiaogeng ^{[6
]}

Wong, Kenneth K. Y. ^{[5
]}

Cheng, Huihui ^{[1
,2
]}

Gan, Jiulin ^{[1
,2
]}

Feng, Zhouming ^{[1
,2
]}

Peng, Mingying ^{[1
,2
,3
,4
]}

Yang, Zhongmin ^{[1
,2
,3
,4
]}

Xu, Shanhui ^{[1
,2
,3
,4
]}

机构：

[1] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[2] South China Univ Technol, Inst Opt Commun Mat, Guangzhou 510640, Guangdong, Peoples R China

[3] Guangdong Engn Technol Res & Dev Ctr Special Opt, Guangzhou 510640, Guangdong, Peoples R China

[4] South China Univ Technol, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Guangzhou 510640, Guangdong, Peoples R China

[5] Univ Hong Kong, Dept Elect & Elect Engn, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China

[6] Huawei Technol Co Ltd, Shenzhen 518129, Peoples R China

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 17期

关键词：

OFDM TRANSMISSION; NOISE; CAVITY; SUPPRESSION;

D O I：

10.1364/OE.25.019752

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A kHz-order linewidth controllable 1550 nm single-frequency fiber laser (SFFL) is demonstrated for the first time to our best knowledge. The control of the linewidth is realized by using a low-pass filtered white Gaussian noise (WGN) signal applied on a fiber stretcher in an optical feedback loop. Utilizing WGN signals with different signal amplitudes An and different cutoff frequencies f(c), the linewidths are availably controlled in a wide range from 0.8 to 353 kHz. The obtained optical signal-to-noise ratio (OSNR) is more than 72.0 dB, and the relative intensity noise (RIN) at frequency greater than 40 MHz reaches -148.5 dB/Hz which approaches the shot noise limit (-152.9 dB/Hz). This kHz-order linewidth controllable SFFL is meaningful and valuable, for optimizing the receiver sensitivity and bit error rate (BER) performance of the coherent optical communication system based on high-order quadrature amplitude modulation (QAM). (C) 2017 Optical Society of America

引用

页码：19752 / 19759

页数：8

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