Electrical Engineering Department, Sharif University of Technology, P.O. Box: 11155-4363 Tehran, Iran.
Opt Lett. 2012 Apr 15;37(8):1322-4. doi: 10.1364/OL.37.001322.
A simple and efficient transmission line model is proposed here to study how the transmission characteristics of photonic crystal waveguides are tailored by introduction of stubs patterned in the photonic crystal lattice. It is shown that band-pass and band-stop optical filters can be easily designed and optimized when stubs of appropriate length are brought in. Since the lengths of the designed stubs are not necessarily integer multiples of the photonic crystal lattice constant, a geometric shift in a portion of the photonic crystal structure is shown to be essential. The proposed model is verified by using a rigorous numerical method. An excellent agreement is observed between the numerical results and the transmission characteristics as extracted by the proposed model.
这里提出了一种简单而有效的传输线模型，用于研究在光子晶体晶格中引入突片如何调整光子晶体波导的传输特性。结果表明，当引入适当长度的突片时，可以轻松设计和优化带通和带阻滤波器。由于设计突片的长度不一定是光子晶体晶格常数的整数倍，因此需要在光子晶体结构的一部分中进行几何移位。通过使用严格的数值方法验证了所提出的模型。观察到数值结果与通过所提出的模型提取的传输特性之间具有极好的一致性。
