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提出了一种正方形排列渐增空气孔高双折射光子晶体光纤,并利用多极方法对光纤基模的模场分布、色散、双折射以及损耗特性进行了数值模拟.模拟结果表明利用这种结构可以在包层空气孔层数较少的情况下实现极低的限制损耗,通过调节内层空气孔的分布可以有效地控制光纤的双折射和色散特性.本结果对高双折射光子晶体光纤的制备具有一定的指导意义.
A square boresight high-birefringence photonic crystal fiber with air holes is proposed, and the mode field distribution, dispersion, birefringence and loss characteristics of the fundamental mode of the fiber are numerically simulated by the multi-pole method. The simulation results show that by using this structure It is possible to achieve very low limiting loss with fewer layers of air holes in the cladding and to effectively control the birefringence and dispersion characteristics of the fiber by adjusting the distribution of the inner air holes.This result shows that the high birefringence photonic crystal fiber Preparation has a certain significance.