中文摘要：

提出了一种超短环形腔布里渊掺铒光纤激光器（BEFL）,腔长仅为10m。该BEFL以4m长的普通掺铒光纤（EDF）为激光增益介质,腔外布里渊抽运光和980nm抽运光的注入在掺铒光纤中,分别引入非线性布里渊增益和线性掺铒光纤放大器（EDFA）增益。实验结果表明,BEFL工作在单纵模状态,输出信噪比高（〉40dB）,抽运阈值低（～20mW）,输出功率大（〉10mW）,且布里渊抽运光不仅决定BEFL的输出波长,更对其抽运阈值和出光功率有重要影响。

英文摘要：

An ultra-short ring-cavity Brillouin-erbium fiber laser （BEFL）, whose cavity length is only 10 m, is demonstrated. The BEFL adopts a section of normal erbium-doped fiber （EDF） with a length of 4 m as the gain medium. Nonlinear Brillouin gain and linear erbium-doped fiber amplifier （EDFA） gain are both introduced into the EDF by using the Brillouin pump and the 980 nm pump outside the cavity, respectively. Experimental results demonstrate that the BEFL operats at single-longitudinal mode with a high signal-to-noise ratio （〉40 dB）, a low pump threshold （~20 mW）, and a high output power （〉10 roW）. Moreover, the Brillouin pump not only decides the output wavelength of the BEFL, but also greatly affects its pump threshold and output power. Key words lasers~ Brillouin-erbium fiber laser single-longitudinal mode ultra-short ring cavity