中国激光, 2018, 45 (7): 0706001, 网络出版: 2018-09-11
单模As-Se红外玻璃光纤的制备及其性能研究 下载: 1018次封面文章
Fabrication of Single-Mode As-Se Infrared Glass Fiber and Its Performance
光纤光学 红外玻璃光纤 蒸馏纯化 非线性光学材料 optical communications infrared glass fiber distillation and purification nonlinear optical materials
摘要
随着红外光纤制备技术的不断发展,低损耗、高非线性且结构完美的红外硫系光纤的研制迫在眉睫。采用了传统的熔融淬冷法和动态蒸馏纯化工艺制备了As40Se58Te2和As40Se60两种玻璃样品,基于两次多步挤压法制备了完美芯包阶跃结构的硫系光纤预制棒,在聚合物的保护下拉制出了损耗较低的阶跃型单模硫系玻璃光纤。结果表明:蒸馏纯化工艺可有效去除硫系玻璃中大部分杂质,2%摩尔百分比的Se被Te替换可有效实现小数值孔径并达到单模传输条件,采用截断法对单模硫系光纤进行了损耗测试,其最低损耗为1.66 dB/m(6.06 μm),工作波段为2.5~12 μm。以光参量放大器(OPA)为抽运源获得了覆盖1.5~13.2 μm(40 dB带宽)的超连续谱输出,光纤有较好的中远红外传输性能和极高的光学非线性性能。
Abstract
With the development of infrared optical fiber technology, it is urgent to develop an infrared low loss chalcogenide optical fibers with perfect-structure and high nonlinearity. In this paper, the two kinds of glass samples of As40Se58Te2 and As40Se60 are prepared by the traditional vacuum melt-quenching method and dynamic distillation purification process. Then we obtain a fine-structured chalcogenide optical fiber prefabricated rod prepared by two multi-step extrusion method. After that, the preform is drawn into a low loss step type single-mode chalcogenides glasses fiber under the protection of polyether sulfone (PES) polymer. The results show that the distillation process can effectively remove most of the impurities in the chalcogenide glasses. 2% mole percent of Se is replaced by Te, which can effectively achieve a small numerical aperture (NA) and single-mode transmission characteristics. The single-mode chalcogenides fiber loss test is measured by the truncation method with a Fourier transform infrared spectroscopy spectrometer. The minimum loss of this fiber can be reduced to 1.66 dB/m at 6.06 μm and these glasses working band is from 2.5 to 12 μm. The output of a supercontinuum spectrum covering 1.5-13.2 μm (40 dB bandwidth) is obtained with an optical parametric amplifier (OPA) as the pump source. The fiber has good mid-far infrared transmission performance and extremely high optical nonlinearity.
薛祖钢, 陈朋, 田优梅, 潘章豪, 赵浙明, 王训四, 张培晴, 戴世勋, 聂秋华. 单模As-Se红外玻璃光纤的制备及其性能研究[J]. 中国激光, 2018, 45(7): 0706001. Zugang Xue, Peng Chen, Youmei Tian, Zhanghao Pan, Zheming Zhao, Xunsi Wang, Peiqing Zhang, Shixun Dai, Qiuhua Nie. Fabrication of Single-Mode As-Se Infrared Glass Fiber and Its Performance[J]. Chinese Journal of Lasers, 2018, 45(7): 0706001.