论文部分内容阅读
在用光纤布拉格光栅作为反射器的掺镱光纤激光器的输出光谱中发现激光波长相对于光纤光栅反射中心偏移的现象 ,偏移量相当于光纤光栅反射带宽的一半。通过实验证明偏移现象与光纤光栅的反射特性和热效应无关 ,并且在不同的温度和不同的光纤光栅反射波长的情况下都得到了同样的结果。采用激光增益线形的有关理论 ,对这一现象进行了分析 ,实验结果与理论分析相一致
In the output spectrum of Yb-doped fiber lasers using fiber Bragg gratings as reflectors, the shift of the laser wavelength with respect to the center of reflection of the fiber gratings was found, offset by half the reflection bandwidth of the fiber gratings. The experimental results show that the offset phenomenon has nothing to do with the reflection and thermal effects of the FBG, and the same result is obtained at different temperatures and different FBG reflection wavelengths. The theory of laser gain line is used to analyze this phenomenon. The experimental results are consistent with the theoretical analysis