| Summary: | 碩士 === 國立交通大學 === 電子工程系所 === 93 === In this research, we investigate the ARROW-B photonic crystal waveguide. The ARROW-B structure can guide light in the fundamental modes of TE and TM polarization, and provides a large core size compatible to single-mode fibers. An ARROW-B photonic crystal line defect waveguide can guide TE and TM modes simultaneously with a photonic crystal structure in the horizontal direction and an ARROW-B structure in the vertical direction. We use the plane wave expansion method (PWM) with a commercial software “FULLWAVE” to analyze the band structure in a 2D photonic crystal and use the finite difference time domain (FDTD) method to simulate the transmission of wave in a 2D PC waveguide to determine the optimal parameter of the lateral structure. We also use FDTD to simulate wave transmission in an ARROW-B PC line defect waveguide. The results show that high transmission of approximately 92.1% (0.357-dB loss) and 89.7% (0.472-dB-loss) for TM and TE, respectively, can be achieved simultaneously in the triangular ARROW-B-based PC waveguide if operating in the complete band gap. And in the square ARROW-B-based PC waveguide, the transmission value are approximately 88.1% (0.550-dB loss) and 86.1% (0.649-dB loss) for TM and TE mode, respectively.
|
|---|
