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利用4×4传输矩阵法,研究具有各向异性缺陷层的一维光子晶体的传输特性,指出利用该结构产生偏振正交双色缺陷模的原理,创建对偏振正交双色模间隔进行调控的方法.基于对各向异性缺陷层掺杂增益物质,研究了获得等增益偏振正交双色缺陷模的方法和条件,为两正交缺陷模在光子晶体激光器中避免模式竞争,获得双模同时谐振提供了理论指导.设计出工作在通信波长1.55μm附近的微尺寸、可调谐超大频差(0～199.8 GHz)的偏振正交双色光子晶体激光器谐振腔.
The transmission characteristics of a one-dimensional photonic crystal with an anisotropic defect layer are studied by a 4 × 4 transfer matrix method. The principle of using this structure to generate polarized orthogonal bichromatic defect modes is proposed, and a method of adjusting the polarization orthogonal dichroic mode interval is established Based on the doping gain material of anisotropic defect layer, the method and condition for obtaining equal gain polarization orthogonal dichroism defect mode are studied, which can avoid the mode competition between two orthogonal defect modes in photonic crystal lasers and provide dual mode simultaneous resonance The theoretical guidance is given.Micro-size, tunable, super-large frequency difference (0 ~ 199.8 GHz) polarized orthogonal bichromal photonic crystal laser resonator working near a communication wavelength of 1.55μm is designed.