论文部分内容阅读
掺铒光纤非均匀展宽引起的空间烧孔现象导致单波长激光并不能完全控制放大器增益。提出了一种新颖简单的结构 ,利用自由光谱范围为 2 6 7nm的法布里珀罗可调谐滤波器和由长周期光纤光栅制成的波长选择性可调谐的衰减器 ,有效地调整不同波长处的腔内损耗 ,可以实现不同强度的双波长激射。由两个不同波长的激光共同承担增益控制的任务 ,降低了控制激光引起的空间烧孔 ,同时双波长激射有效地抑制了信号光的弛豫振荡。
The erroneous hole burning caused by the non-uniform spreading of erbium-doped fiber results in that the single wavelength laser can not completely control the gain of the amplifier. A novel and simple structure is proposed. By using a Fabry-Perot-tunable filter with a free spectral range of 2 6 7 nm and a wavelength-selective tunable attenuator made of a long-period fiber grating, effective modulation of different wavelengths Department of cavity loss, you can achieve different strength of the dual-wavelength lasing. The task of gain control is shared by two lasers of different wavelengths, which reduces the space-burning hole caused by the control laser, and the double-wavelength lasing effectively restrain the relaxation oscillation of the signal light.