为了拉制氧化锆单晶光纤，采用一种基于激光加热基座生长法的单晶光纤拉制系统，在原有的激光加热基座生长法生长单晶光纤的基础上，设计出环形聚焦激光加热系统，对其光学系统进行了改进、优化。利用椭球镜的双焦点特性设计光路，在其第一焦点处形成聚焦环形热源，用于熔化晶棒，拉制光纤；通过ZEMAX光学软件对系统进行了光学仿真。结果表明，在光学系统的聚焦点，能形成高质量的环形热源。该系统有着其它激光加热基座生长法的光学系统无法比拟的优点，在拉制氧化锆和其它高温单晶光纤方面有着很好的应用。

In order to produce zirconia crystal optical fibers, a pulling single crystal fiber system was put forward based on the method of laser heating pedestal growth(LHPG). Based on original LHPG, a circular focused laser heating system was designed and its optical system was improved and optimized. Making use of both focal points in an ellipsoidal mirror, a focused circular heating source was formed at one of the focal points to melt the crystal and produce fibers. Optical simulation was carried out with ZEMAX software. The simulation results indicate that a high quality circular heating source can be formed at the focal point of the optical system. The system has incomparable advantages comparing with other laser pedestal heating optical systems. The system has good application in the production of zirconia and other high temperature single-crystal optical fibers.