全玻璃实心保偏光子晶体光纤的研制

Fabrication of All-glass Polarization Maintaining Photonic Crystal Fiber

设计并采用棒管法结合毛细管堆积技术制备了一种全玻璃材料的实心保偏光子晶体光纤,光纤端面测试结果表明,这种结构设计有效克服了传统光子晶体光纤制造过程中空气孔易于塌陷的困难,光纤微结构保持良好.采用剪断法测得在1550nm波长下光纤的传输损耗为6.84dB/m.测试了输出光的偏振度,结果表明该光纤具有较好的保偏特性,说明采用此方法研制具有高保偏性能且制作工艺简单的光子晶体光纤是可行的.

A kind of all-glass polarization maintaining PCF is designed and fabricated using rod-in-tube method and capillary-stacking technique. The microscopic end profile of the fiber exhibits an excellent maintenance in the fine structure of the PCF. Thus, this design has effectively overcome the defect of airholes collapse in traditional PCF fabrication process. Measurement of the fiber attenuation with the cutback method is 6. 84 dB/m at 1 550 nm. The polarization measurement indicates that the fiber has a good capability to maintain polarization. Therefore it is feasible to achieve the fiber that can effectively maintain polarization and is easy to be fabricated by this all-glass design.