基于光子晶体方形谐振器的可调谐光信号分离器
发布时间：2018-09-08 21:19
【摘要】：在二维光子晶体结构中通过调节光子晶体方形谐振器PCSRs(Photonic Crystal Square Resonators)与波导的耦合长度、耦合宽度、及其耦合柱半径优化设计了光信号分离器.借助于CMT(Coupled-Mode Theory)理论定性分析了两个PCSRs存在相互作用时,结构中波导与谐振腔之间的电磁波耦合性能,用FDTD方法研究了两信道传输工作特性.表明在设计的参数范围中,基于PCSRs的信号分离器具有高正规化传输率、窄带宽、平稳的信号传输强度,中心波长调谐范围宽的特性.该类结构可用于同一中心波长信号的功率二等均分,也可用于不同中心波长信号的分离.该微型结构在片上的光路设计将是一类有潜力的构筑模块,适于光通信领域波分解复用设计、光路集成设计等方面.
[Abstract]:In the two-dimensional photonic crystal structure, the optical signal separator is designed by adjusting the coupling length, coupling width and coupling column radius between the photonic crystal square resonator PCSRs (Photonic Crystal Square Resonators) and the waveguide. By means of CMT (Coupled-Mode Theory) theory, the electromagnetic wave coupling between waveguide and resonator in the structure is qualitatively analyzed in the presence of interaction between two PCSRs, and the transmission characteristics of two channels are studied by FDTD method. It is shown that the signal separator based on PCSRs has the characteristics of high normalized transmission rate, narrow bandwidth, steady signal transmission intensity and wide tuning range of central wavelength in the designed parameter range. This kind of structure can be used to divide the power of the same center wavelength signal equally and to separate different center wavelength signals. The optical path design of the micro-structure on the chip will be a kind of potential building module, which is suitable for the design of wavelength decomposition and multiplexing in the field of optical communication, the design of optical path integration, and so on.
【作者单位】： 聊城大学物理科学与信息工程学院;
【基金】：国家自然科学基金(11375081)~~
【分类号】：TN929.1
[Abstract]:In the two-dimensional photonic crystal structure, the optical signal separator is designed by adjusting the coupling length, coupling width and coupling column radius between the photonic crystal square resonator PCSRs (Photonic Crystal Square Resonators) and the waveguide. By means of CMT (Coupled-Mode Theory) theory, the electromagnetic wave coupling between waveguide and resonator in the structure is qualitatively analyzed in the presence of interaction between two PCSRs, and the transmission characteristics of two channels are studied by FDTD method. It is shown that the signal separator based on PCSRs has the characteristics of high normalized transmission rate, narrow bandwidth, steady signal transmission intensity and wide tuning range of central wavelength in the designed parameter range. This kind of structure can be used to divide the power of the same center wavelength signal equally and to separate different center wavelength signals. The optical path design of the micro-structure on the chip will be a kind of potential building module, which is suitable for the design of wavelength decomposition and multiplexing in the field of optical communication, the design of optical path integration, and so on.
【作者单位】： 聊城大学物理科学与信息工程学院;
【基金】：国家自然科学基金(11375081)~~
【分类号】：TN929.1
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