报道了一台适用于分布式光纤传感的全光纤激光器。激光器基于主振荡功率放大(MOPA)技术,种子光源为半导体激光器,放大器为掺铒光纤放大器。实现了重复频率和脉冲宽度分别独立可调的激光输出,中心波长为1550 nm,光谱的3 dB带宽小于0.2 nm,获得的最高峰值功率为1.1 kW,输出的激光脉冲中放大自发辐射(ASE)功率分数的最大值低于10%。 An all-fiber laser suitable for distributed fiber sensing is reported. The laser is based on the main oscillator power amplifier (MOPA) technology, the seed light source is a semiconductor laser and the amplifier is an erbium-doped fiber amplifier. A laser output with independently adjustable repetition rate and pulse width was achieved with a central wavelength of 1550 nm, a 3 dB bandwidth of less than 0.2 nm and a peak power of 1.1 kW. The output laser pulse amplified spontaneous emission (ASE) The maximum power score is less than 10%.