首页> 外文会议>Conference on Photonic Crystal Materials and Devices Jan 28-30, 2003 San Jose, California, USA >Designing Complex Optical Filters Using Photonic Crystal Microcavities
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Designing Complex Optical Filters Using Photonic Crystal Microcavities

机译:使用光子晶体微腔设计复杂的滤光片

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摘要

By adding a point defect to a photonic crystal structure, a microcavity can be made to trap electromagnetic energy with wavelength inside the photonic bandgap (PBG). This property together with other unique properties of photonic crystals enables us to control the propagation and spectrum of transmitted wave inside the photonic crystal waveguiding structures and to design and implement microscale optical filters. In this paper we focus on the design of notch filters in photonic crystal waveguides based on the coupling of waveguide and cavity. We discuss about the properties of a single cavity and its necessary modifications to achieve efficient coupling between cavity and waveguide and eventually obtain desired notch filters at the frequency range of interest. We also discuss the coupling of multi-cavities to a waveguide and the possibility of attaining filters with better performances is presented, and the spectrum and lineshapes of the resulting filters are characterized.
机译:通过在光子晶体结构上添加点缺陷,可以使微腔捕获光子带隙(PBG)内部波长的电磁能。这种特性以及光子晶体的其他独特特性使我们能够控制光子晶体波导结构内部的传输波的传播和光谱,并设计和实现微尺度滤光片。在本文中,我们着重于基于波导与腔耦合的光子晶体波导中的陷波滤波器的设计。我们讨论了单个腔的性质及其必要的修改,以实现腔和波导之间的有效耦合,并最终在感兴趣的频率范围内获得所需的陷波滤波器。我们还讨论了将多腔耦合到波导的问题,并提出了获得具有更好性能的滤波器的可能性,并描述了所得滤波器的频谱和线形。

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