摘要
基于自制的双波长低反射率光纤光栅(FBG)作为分布式布拉格反射激光器(DBR)的输出端,实现了掺Yb^(3+)双频DBR光纤激光器。该FBG的双波长间隔为0.12 nm,对应的频差为32 GHz。双频光纤激光器输出的两个波长分别为1 063.09 nm和1 063.21 nm,光谱信噪比大于60 d B。每一个波长只包含一个纵模。两个纵模的拍频信号为32.014 GHz,频谱信噪比大于35 d B。得益于光纤激光器本身具有结构紧凑,抗干扰能力强等特点,该型激光器有望作为高品质,小型化的微波信号源,用于微波传感和通信等领域。
A dual-frequency Yb3+-doped distributed Bragg reflection(DBR)fiber laser was demonstrated,which used a home-made dual-wavelength low reflectivity FBG as the output port of the DBR fiber laser.The wavelength spacing of the FBG was about 0.12 nm,corresponding to 32 GHz frequency difference.The dual-wavelength of the laser output was 1 063.09 nm and 1 063.21 nm,respectively.The spectral signal noise ratio was more than 60 dB.Each of the wavelengths included only one longitudinal mode.The beat frequency of the dual-frequency was 32.014 GHz.The signal-noise ratio of the frequency spectrum was more than 35 dB.Benefitted from the compact structure and the strong anti-interference capability of the fiber laser,the dual-frequency fiber laser is promising as the candidate of high-quality microwave signal generator for the applications such as microwave sensing and communications.
作者
侯玉斌
张倩
齐恕贤
冯宪
王璞
Hou Yubin;Zhang Qian;Qi Shuxian;Feng Xian;Wang Pu(Institute of Laser Engineering,Beijing University of Technology,Beijing 100124,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2018年第10期108-111,共4页
Infrared and Laser Engineering
基金
国家自然科学基金(61527822
61235010
61378088
61307054)
关键词
光纤激光器
掺镱
双频
微波光子学
fiber laser
Yb-doped
dual-frequency
microwave photonics