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设计并研制出一种与普通单模光纤高适配的低弯曲损耗光子晶体光纤.结构采用光纤预制棒制作工艺上易于实现的掺锗芯六孔结构.应用间接测量方法,对其模式、弯曲及色散特性进行了系统的评估.在波长1550nm处研制光纤的模场面积为79.26μm2,色散为21.7ps·km-1·nm-1,模场面积和色散特性与标准单模光纤具有高的适配性.在光纤弯曲半径为5mm时,在波长1550nm处的弯曲损耗为0.0365dB/圈,小于G.657B的弯曲损耗0.5dB/圈.研究成果为光纤到户用低弯曲损耗光纤的实用化奠定了良好的基础.
A low bending loss photonic crystal fiber is designed and fabricated with high single-mode fiber, and the structure is easy to be achieved by using optical fiber preform manufacturing process. The indirect measurement method is used to analyze the mode, bending And dispersion characteristics were evaluated systematically.The mode field area of optical fiber developed at 1550nm was 79.26μm2, the dispersion was 21.7ps · km-1 · nm-1, and the mode field area and dispersion characteristics were higher than that of standard single mode fiber The bending loss at the wavelength of 1550nm is 0.0365dB / circle, which is less than the bending loss of 0.5dB / circle at the G.657B at the bend radius of 5mm.The research results are practical for the fiber to the household with low bend loss fiber Has laid a good foundation.