| Summary: | 碩士 === 龍華科技大學 === 電機工程系碩士班 === 107 === This paper is mainly about the design and analysis of point-symmetric 1×3 directional couplers for two-dimensional photonic crystal. Based on a traditional uniform symmetrical directional coupler. Design and perform simulation analysis on the dielectric column radius and the coupling region waveguide length in the coupling region. The purpose is to design the optimal parameter structure of the spectroscopic average, and the influence of various parameters on the transmission rate is observed.
In addition, for the stability problem and considering the implementation of the application, this paper also made simulations such as optical frequency tolerance range and temperature coefficient change.
In this paper, the structure 2 of 1×3 three-point symmetric direction coupling beam splitters in this paper has the best transmission stability, and the structure 1 has the widest optical frequency range and the best temperature tolerance.
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