基于严格电磁场理论，给出了微型谐振环Ω形和Fishnet结构体内太赫兹波的严格表达式，并利用电磁场的边界条件分析了太赫兹波在微型谐振环Ω形和Fishnet结构体内空间分布的增强效应。数值模拟结果表明：谐振环金属条附近的电场大于磁场，金属条附近的电场相对其他区域明显要强得多，开口处表现更为突出，太赫兹波在Fishnet结构体内电磁场的峰位处电场和磁场分布关于x对称;电场的极值出现在大十字架的上下四个角，而磁场的极值则出现在小十字架的上下两端点。同时用电磁场传输线理论对该现象作出一定的物理解释。

Based on the rigorous electromagnetic field theory, the rigorous expression of terahertz waves in micro-ring resonators with Ω shape and fishnet structure is given in this paper. With the boundary conditions of electromagnetic field, the enhancement effect of the spatial distribution of terahertz waves in the micro-ring resonator with Ω shape and fishnet structure is analyzed. The numerical results show that the electric field is greater than the magnetic field near the ring resonator metal strips. The electric field near the metal strips is obviously stronger than that in other regions, especially in the opening. The THz electric and magnetic fields in the peak position of electromagnetic field in fishnet structure are symmetry with respect to x. The extremum of the electric field appears in the four up and down corners of the large cross, while the extremum of the magnetic field appears in the upper and lower ends of the small cross. The physical interpretation of these phenomena is also given in the point view of the theory of electromagnetic field transmission lines.