CAJ | 학술논문

为了设计一种基于正方晶格光子晶体波导的三端口解波分复用器，利用光子晶体的光子带隙特性和光在光子晶体慢光波导中的传输特性，并采用平面波展开法及时域有限差分法对解波分复用器的特性进行了理论分析，数值计算了解复用器的空间和光谱分布特性。结果表明，调整波导中与波导紧邻的第1排柱子的位置，使三部分波导中传输的慢光频率发生改变，通过合理的结构设计，利用慢光模式传输的特点将不同频率的光从不同的输出端输出，可实现解复用的目的。
위료설계일충기우정방정격광자정체파도적삼단구해파분복용기，이용광자정체적광자대극특성화광재광자정체만광파도중적전수특성，병채용평면파전개법급시역유한차분법대해파분복용기적특성진행료이론분석，수치계산료해복용기적공간화광보분포특성。결과표명，조정파도중여파도긴린적제1배주자적위치，사삼부분파도중전수적만광빈솔발생개변，통과합리적결구설계，이용만광모식전수적특점장불동빈솔적광종불동적수출단수출，가실현해복용적목적。
In order to design three-port wavelength-division demultiplexer based on square lattice photonic crystal waveguide , wavelength-division demultiplexer was analyzed theoretically by using the characteristics of photonic band gap of photonic crystal and the transmission characteristics of slow light mode in photonic crystal , by using plane wave expansion method and finite difference time domain method .The spectral and spatial characteristics of wavelength-division demultiplexer were calculated numerically .The results show that adjusting the position of the column at the first row adjacent to the waveguide will change the frequency of slow light transmitted in three parts of waveguide .Based on the transmission characteristics of slow light , provided a reasonable structure design , the light beams at different frequencies can output from different output terminals , and the purpose of demultiplexing can be achieved .