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分析了光子晶体光纤拉制中各工艺参数之间的相互影响,建立了工艺参数与最终光纤结构之间的对应关系.在温度和送料速度的协调控制下,通过调节气压参数可有效控制气孔结构.实验拉制出孔径孔距比分别为0.45和0.8的单模以及高占空比光子晶体光纤.在制备非均匀孔径光子晶体光纤时,仅靠调控工艺参数往往难以拉制出理想结构,本文以一种单偏振单模PCF结构为例,对预制棒结构进行了优化设计.计算表明可由此拉制出满足要求的光子晶体光纤.
The interaction between process parameters in the process of drawing photonic crystal fiber is analyzed and the corresponding relationship between the process parameters and the final fiber structure is established.Under the coordinated control of temperature and feeding speed, the pore structure can be controlled effectively by adjusting the pressure parameters The single-mode and high-duty-cycle photonic crystal fibers with aperture-to-aperture ratio of 0.45 and 0.8 were fabricated experimentally, and it is often difficult to draw the ideal structure only by controlling the process parameters when preparing a non-uniform aperture photonic crystal fiber Taking a single-polarization single-mode PCF structure as an example, the pre-rod structure was optimized, and the calculation shows that the photonic crystal fiber can be drawn to meet the requirements.