1 μm波段零色散高非线性光子晶体光纤的设计
Design of Photonic Crystal Fiber with Zero Dispersion and High Nonlinearity at the Wavelength of 1 μm
摘要:
本文设计了一种在1 μm波段具有零色散、高非线性系数的光子晶体光纤，采用有限元法研究了该光纤的色散特性、模场特性及非线性特性。数值计算结果表明，当光纤包层孔间距为4.344 μm时，在1 μm波长处可获得零色散，有效模场面积为11.07 μm2，非线性系数为18.17 W−1∙km−1。这种非线性光纤在高速光通信、光纤传感及非线性光学方面具有广泛的应用前景。
Abstract:
A kind of zero dispersion and high nonlinearity photonic crystal fiber at the wavelength of 1 μm is designed. Characteristics such as dispersion, effective mode area, and nonlinear coefficient of the fiber are investigated by the finite element method. Simulation results show that the dispersion is 0 at the wavelength of 1 μm when the air hole pitch is 4.344 μm, the effective mode area is 11.07 μm2 and the nonlinear coefficient is 18.17 W−1∙km−1. It could be widely used in the high speed optical communications, optic fiber sensors and nonlinear optics.
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