1.5 μm polarization- maintaining dual-wavelength single-frequency distributed Bragg reflection fiber laser with 28 GHz stable frequency difference

被引：17

作者：

Hou, Yubin ^{[1
]}

Zhang, Qian ^{[1
]}

Qi, Shuxian ^{[1
]}

Feng, Xian ^{[1
]}

Wang, Pu ^{[1
]}

机构：

[1] Beijing Univ Technol, Inst Laser Engn, Beijing Engn Res Ctr Appl Laser Technol, Beijing 100124, Peoples R China

来源：

OPTICS LETTERS | 2018年 / 43卷 / 06期

基金：

中国国家自然科学基金;

关键词：

MILLIMETER-WAVE GENERATION; MICROWAVE PHOTONICS; OPTICAL-GENERATION; RADIO SYSTEMS; FEEDBACK; SIGNALS;

D O I：

10.1364/OL.43.001383

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a polarization-maintaining (PM) dualwavelength (DW) single-frequency Er-doped distributed Bragg reflection (DBR) fiber laser with 28 GHz stable frequency difference. A homemade PM low-reflectivity superimposed fiber Bragg grating (SFBG) is employed as the output port of the DBR fiber laser. The SFBG has two reflection wavelengths located in the same grating region. The reflectivity of both DWs is around 85%. The achieved linear polarization extinction ratio is more than 20 dB. The DWs of the laser output are located at 1552.2 nm and 1552.43 nm, respectively. The optical signal-to-noise ratio (SNR) is above 60 dB. For each wavelength, only one longitudinal mode exists. The beat frequency of the two longitudinal modes is measured to be 28.4474 GHz, with the SNR of more than 65 dB and the linewidth less than 300 Hz. During a 60-min-long measurement, the standard deviation of the frequency fluctuation is 58.592 kHz. (C) 2018 Optical Society of America

引用

页码：1383 / 1386

页数：4

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