Weak laser pulse signal amplification based on a fiber Brillouin amplifier  

作　　者：Liwen Sheng Dexin Ba Zhiwei Lü 盛立文;巴德欣;吕志伟(National Key Laboratory of Science and Technology on Tunable Laser,Harbin Institute of Technology)

机构地区：[1]National Key Laboratory of Science and Technology on Tunable Laser,Harbin Institute of Technology,Harbin 150001,China [2]Corresponding author： [e-mail] [3]corresponding author： [e-mail]

出　　处：《Chinese Optics Letters》2018年第11期66-69,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61605034)

摘　　要：We propose a high-gain and frequency-selective amplifier for a weak optical signal based on stimulated Brillouin scattering in a single mode fiber. To be able to satisfy the needs of high gain and high signal-to-noise ratio laser pulse amplification, different fiber lengths and core diameters are used to fulfill this experiment. In the experiment, a 430 nW （peak power） pulsed signal is amplified by 70 dB with a signal-to-noise ratio of 14 dB. The small size, high gain, low cost, and low noise of the fiber Brillouin amplifier make it a promising weak signal amplification method for practical applications such as lidar.We propose a high-gain and frequency-selective amplifier for a weak optical signal based on stimulated Brillouin scattering in a single mode fiber. To be able to satisfy the needs of high gain and high signal-to-noise ratio laser pulse amplification, different fiber lengths and core diameters are used to fulfill this experiment. In the experiment, a 430 nW （peak power） pulsed signal is amplified by 70 dB with a signal-to-noise ratio of 14 dB. The small size, high gain, low cost, and low noise of the fiber Brillouin amplifier make it a promising weak signal amplification method for practical applications such as lidar.

关 键 词：Fiber optic amplifiers LIDAR Optical amplifiers Optical signals Single mode fibers Stimulated Brillouin scattering 

分 类 号：TN722[电子电信—电路与系统] TU528.572[建筑科学—建筑技术科学]