研究了两路光纤激光的相位锁定和相干输出, 用融锥光纤耦合器实现了两路高掺铒光纤激光之间的相互耦合。提出了在激光器高反射率前腔镜的前面加融锥光纤耦合器的方法构成简单的共振腔, 从而实现两路光纤激光的相干叠加。开展了基于融锥光纤耦合器互注入锁相的两路光纤激光器的相干合成实验, 成功实现了两路光纤激光器的注入锁定, 观察到了波长锁定（中心波长稳定在1549.8 nm, 线宽为0.08 nm）、远场干涉条纹和线宽压缩现象。分析了单个激光器和激光器阵列的斜率效率, 当反射率为70%, 抽运功率均为145 mW时, 获得最大合成功率为127 mW。

In this paper, phase-locking and coherent output of two fiber lasers is studied. Two Er3+ high-doped fiber lasers are coupled using fused fiber coupler each other. The idea to fabricate a simple resonant cavity by coupled with fused fiber coupler in front of high-reflectivity front surface reflector of fiber lasers is proposed, thus to realize the coherent beam combining of two fiber laser. The mutual-injection phase-locking coherent combing experiment of two fiber lasers was demonstrated, in which the locked wavelength (center wavelength is 1549.8nm, line-width is 0.08 nm), the steady interference strips and the line-width of compression were experimentally observed. The slope efficiencies of the individual laser and the laser array. When reflectivity is 70% and pump power of two fiber lasers is 145mW, the maximum combined output power of 127mW is obtained.