Yan Wei-Cong, Guo Zhi-You, Zhu Ning, Jiang Yu-Qiang
Laboratory of Nanophotonic Functional Materials and Devices, Institute of Optoelectronic Material and Technology, South China Normal University, Guangzhou 510631, China.
Opt Express. 2013 Jul 15;21(14):16536-40. doi: 10.1364/OE.21.016536.
We propose an equilateral triangle resonator filter with an output waveguide and analyzed by the finite-difference time-domain technique. The filter can realize directional output with a high Q mode by means of the mode-field coupled into the output waveguide, which results a reduction in the scattering loss at the vertices. In addition, to the deformed equilateral triangle resonator filter, an optimum parameter with a cut corner of 0.23 μm, which is equal to that of the input waveguide and can be an optimal cut, is found to help increase in finesse, Q factors, extinction ratio and the output intensity on resonance of the drop port normalized with the through port .
我们提出了一种带有输出波导的等边三角形谐振器滤波器，并采用时域有限差分技术进行分析。该滤波器能够通过耦合到输出波导中的模式场实现具有高Q模式的定向输出，这使得顶点处的散射损耗降低。此外，对于变形的等边三角形谐振器滤波器，发现一个最佳参数，即切角为0.23μm（与输入波导的切角相等且可为最佳切割），有助于提高精细度、品质因数、消光比以及与直通端口归一化后的下路端口在谐振时的输出强度。
