A new design of tunable four-port wavelength demultiplexer by photonic crystal ring resonators
A new design of tunable four-port wavelength demultiplexer by photonic crystal ring resonators
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DOI：
10.1016/j.ijleo.2013.04.128
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发表时间：
2013-12
期刊：
影响因子：
3.1
通讯作者：
M. Mansouri-Birjandi;M. Rakhshani
中科院分区：
文献类型：
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作者：
M. Mansouri-Birjandi;M. Rakhshani
设计了一种可用于光子集成电路的基于光子晶体环形谐振器（PCRR）的四通道波长解复用器。改进后的单环滴注效率为100%，Q值为842。为了实现解复用器的结构，已经使用了三个改进的环，每个环具有单独的内杆半径;这意味着每个环具有变化的谐振波长。利用时域有限差分法（FDTD）对该结构进行了仿真，结果表明，每个输出端口的平均传输功率大于90%，通道间距约为8 nm，每个通道的带宽约为2.8nm。输出通道间串扰的平均值约为-29 dB，结构面积约为317 μm2。通过改变内杆的半径，可以选择不同的波长，因此该装置是可调谐的。
A four-channel wavelength demultiplexer based on photonic crystal ring resonators (PCRR), which can be used for photonic integrated circuits, is designed. Dropping efficiency andQfactor of single improved ring are 100% and 842, respectively. In order to achieve the structure of demultiplexer, three improved rings have been used, that every ring has an individual inner rod radius; it means that each ring has a varying resonant wavelength. The results of simulation using finite-difference time-domain (FDTD) method in our proposed structure reveals an average transmitted power higher than 90% for each output port, Channel spacing is about 8 nm and bandwidth for each individual channel is about 2.8 nm. The mean value of the crosstalk between output channels and the area of the proposed structure are about −29 dB and 317 μm2, respectively. By changing the radius of inner rods, various wavelengths can be chosen, therefore this device is tunable.