Femtosecond Optics Group, Department of Physics, Imperial College London, Prince Consort Road, London SW7 2AZ, UK.
Opt Lett. 2011 Apr 15;36(8):1446-8. doi: 10.1364/OL.36.001446.
We demonstrate the capability for amplification of picosecond pulses in two bismuth-doped alumosilicate fibers. A spectrally filtered supercontinuum source is used to provide a train of picosecond pulses at discrete wavelengths within the gain bandwidth of bismuth fiber amplifiers. With a 30 m length of active fiber, a small signal gain at 1160 nm of over 20 dB is observed. In addition, we assess the viability of amplification of high repetition rate signals in such amplifiers, applying a 10 GHz modulation to a continuous wave Raman fiber laser operating at 1178 nm, finding that such signals are amplified without noticeable distortion.
我们展示了在两种掺铋铝硅酸盐光纤中放大皮秒脉冲的能力。使用光谱滤波的超连续谱源，在掺铋光纤放大器的增益带宽内提供离散波长的皮秒脉冲序列。在 30 m 长的有源光纤中，在 1160nm 处观察到超过 20dB 的小信号增益。此外，我们评估了在这种放大器中放大高重复率信号的可行性，在 1178nm 工作的连续波拉曼光纤激光器上施加 10GHz 调制，发现这些信号在没有明显失真的情况下被放大。
