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硫系玻璃具有超宽的红外光谱透过范围和极高的线性、非线性折射率,因此硫系玻璃光纤成为目前唯一能产生中远红外超连续谱输出的光纤基质材料。综述了传统阶跃型硫系光纤、硫系微结构光纤以及硫系拉锥光纤中红外超连续谱输出的研究进展。
The chalcogenide glass has a very wide infrared spectral transmission range and a very high linear and nonlinear refractive index. Therefore, the chalcogenide glass fiber becomes the only optical fiber matrix material capable of producing COSCO supercontinuum output. The research progress of mid-infrared supercontinuum output of traditional step-type sulfur-based fiber, sulfur-based microstructured fiber and sulfur-based tapered fiber was reviewed.