二维光子晶体中H偏振的能带计算,可以就是六角结构.-the photonic band for H poralization od 2D photonic crystal

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(非线性方程组的)牛顿(解)法(Newton meth-od (of nonlinear equations ))解非线性方程组的一种经典方法，它是方程求根牛顿法的推广。-(Newton meth-od (nonlinear equations)) is a classical method of solving nonlinear equations. It is the generalization of the method of solving the Newton method.