基于915 nm泵浦的铒镱共掺双包层光纤放大器

Erbium-ytterbium Co-doped Double-clad Fiber Amplifier Based on 915 nm Pumping

搭建了级联光纤放大系统,掺铒光纤放大器(EDFA)作为预放大级,铒镱共掺双包层光纤放大器作为功率放大级。为了提高镱离子吸收效率,实现功率稳定输出,功率放大级选择915 nm的半导体激光器作为泵浦源,铒镱共掺双包层光纤作为增益介质,采用前向泵浦的方式,对可调谐光源输入的1540~1565 nm波段的信号光进行了放大。在信号光功率为10 mW,预放大级泵浦功率为500 mW的条件下,对不同波长的信号光经过级联光纤放大系统进行了放大,最终在1565 nm处获得1.106 W的最高输出功率。

A cascade amplification system is built.The erbium doped fiber amplifier(EDFA)is used as the preamplifier,the erbium ytterbium co doped double clad fiber amplifier is used as the power amplification stage.In order to improve the absorption efficiency of ytterbium ions and achieve stable power output,the power amplification stage uses the 915 nm semiconductor laser as the pump source,and the erbium ytterbium co doped double clad fiber is used as the gain fiber.The forward pumping mode is used to amplify the 1540~1565 nm signal light input from the tunable light source.Under the condition that the signal light power is 10 mW and the pre amplified pump power is 500 mW,t he signal light of different wavelengths is amplified by the cascade amplification system,and the maximum output power is 1.106 W at 1565 nm.