Abstract: Equal inclination interference is an important knowledge point in the teaching of wave optics,there are some learning disorder for students to understand this topic. In this paper, the function of light intensity distribution was obtained by theoretical derivation, and spatial interference model was created. The pattern of equal inclination interference was simulated by Origin software based on the function of light intensity distribution. The distribution characteristics of interference fringes were also discussed. The simulated interference pattern shows that the distribution of fringes is inhomogeneous. The width of interference fringes decreases with the distance from the center in the form of an exponential function. By the analysis of this paper, the students can clearly understand the essence of equal inclination interference, and systematically grasp the distribution characteristics of interference pattern.

Key words: equal inclination interference, interference pattern, simulation, light intensity distribution