对N形反射光双稳器件的结构进行了理论设计和实验研究。对光双稳的重要参数δI0、δIｒ与初始失调量δ之间的关系进行了描绘，并通过引入ZnSe薄膜的色散关系，使这一理论方法具有自洽性。最后，文章给出了通过这一方法设计的非线性干涉滤光片Ｎ形反射光双稳器件的实验结果。

The N type properties of reflected bistable optical devices (RBODs) are studued by using the accuracy matrix formulas based on the principle of thin film optics. The relationship between δI 0、 δI r and δ, which are all the important parameters of RBODs, is plotted. The dispersive relations of ZnSe thin film are intoduced into the method to make the theoretical method self consistent. Finally, experimental result of a RBOD of nonlinear interference filter is given.