双包层全固态光子带隙光纤特性的研究

Study on the Characteristics of Double-cladding All-solid Photonic Bandgap Fibers

基于有限元法,从数值上计算模拟简单全固态和双包层全固态两种光子带隙光纤的光子带隙分布、模场分布、色散和色散斜度、有效折射率、限制损耗特性。研究数据表明,双包层全固态光子带隙光纤在光纤的工作波长范围内存在更宽的光子带隙,并且光更容易在纤芯传输,传输的能量近似高斯分布。同时发现在这一工作波长范围内近似平坦色散,色散斜度非常小,光纤的传输限制损耗也非常低。

Based on finite element method, the photonic band gap, mode field distribution, dispersion, dispersion slope,effective refractive index and limiting loss characteristics of two kinds of photonic band gap fiber are numerically simulated.The numerical simulation shows that there is a wider photonic band gap in the operating wavelength range of the fiber. This fiber makes it easier to transmit the light locally in the fiber core, and the transmission energy is approximately gauss distribution. At the same time, it is also found that the flat dispersion is approximately within this working wavelength range, and the dispersion slope is very small, and the fiber transmission limit loss is also very low.