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首页> 外文会议>Optoelectronic materials and devices IV >Decoupling Efficiency of Multiple Coupled Photonic Crystal Waveguides
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Decoupling Efficiency of Multiple Coupled Photonic Crystal Waveguides

机译：多重耦合光子晶体波导的去耦效率

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摘要

We investigate decoupling characteristics and efficiency of multiple coupled photonic crystal waveguides (M-CPCWs) using coupled mode theory on the basis of self-imaging principle. The three-, four- and eight-CPCWs are selected as the typical structures to discuss the general characteristics of the M-CPCWs. It is found that around the frequency where the multiple guided modes are almost degenerate, which leads to that the power transfer in the M-CPCWs is eliminated for any entrance. The frequency region for decoupling is insensitive to the number of coupled waveguides with the extinction ratios higher than -15dB. An optimization way by introducing a defect mode is utilized to enhance the decoupling efficiency. The simulation results are based on the finite-difference time-domain method. The decoupling of the M-CPCWs exhibit many advantages and may have practical applications in photonic integrated circuits.
机译：我们基于自成像原理，使用耦合模式理论研究了多个耦合光子晶体波导（M-CPCW）的去耦特性和效率。选择三个，四个和八个CPCW作为典型结构，以讨论M-CPCW的一般特性。发现在多个引导模式几乎退化的频率附近，这导致针对任何入口消除了M-CPCW中的功率传递。去耦的频率区域对消光比高于-15dB的耦合波导的数量不敏感。利用引入缺陷模式的优化方式来提高去耦效率。仿真结果基于时域有限差分法。 M-CPCW的去耦表现出许多优点，并且可能在光子集成电路中具有实际应用。

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