Er^3＋—Yb^3＋双掺杂有源光纤

报道了制造Ｅｒ＾３＋－Ｙｂ＾３＋双掺单模有源光纤的溶液掺杂技术，此光纤经紫外辐照后中收峰处损耗明显增加，而低损耗区损耗几乎不变。对激光器件应用而言，认为几百ｐｐｍ浓度和Ｙｂ＾３＋：Ｅｒ＾３＋＝２０：１掺杂比是合适的。探讨了Ｅｒ＾３＋和Ｙｂ＾３＋能级间相互跃迁机理，通过二者的交叉驰豫提高了泵哺吸收带范围和热稳定性。

The Er~(3+)-Yb~(3+) Co-doped Active Optical Fiber

A solution doping technique of fabricating Er3+- Yb3+ Co-doped single-mode active fiber is reported. After ultraviolet irradiation, the fiber attenuation increases obviously at several absorption peaks, whereas the value in low absorption region remains almost no change. Several hundreds of ppm dopant concentration and dopant ratio of Yb3+ : Er3+ = 20 : 1 are found to be appropriate for device application. The cross-transition mechanism between energy levels of Er3+ and Yb3+ is investigated, through cross-relaxation between them, the pupping absorption band has been widened and the thermal stability has been enhanced.