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arXiv 2103.07822physics.opticsphysics.app-ph
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采用三波导耦合Sagnac环反射器的高性能光滤波器

High Performance Optical Filters Using Three Waveguide Coupled Sagnac Loop Reflectors

H. Arianfard, J. Wu, S. Juodkazis, D. J. Moss

摘要:

从理论上研究了由三个波导耦合Sagnac环反射器(3 WC-SLR)构成的先进的多功能集成光子滤波器。通过定制相干模干涉,3 WC-SLR谐振器的光谱响应被设计成实现具有高性能的多种滤波功能。这些包括产生高光谱消光比(ER)和斜率的Fano共振的光学类似物,具有高ER和低自由光谱范围的共振模式分裂,以及经典的Butterworth,Bessel,Chebyshev和椭圆滤波器。详细分析了结构参数和制造公差的影响,以促进器件的设计和优化。实际应用的要求也被考虑。这些结果从理论上验证了使用3 WC-SLR谐振器作为多功能集成光子滤波器在不同应用中的灵活频谱工程的有效性。

英文摘要:

We theoretically investigate advanced multi-functional integrated photonic filters formed by three waveguide coupled Sagnac loop reflectors (3WC-SLRs). By tailoring the coherent mode interference, the spectral response of the 3WC-SLR resonators is engineered to achieve diverse filtering functions with high performance. These include optical analogues of Fano resonances that yield ultrahigh spectral extinction ratios (ERs) and slope rates, resonance mode splitting with high ERs and low free spectral ranges, and classical Butterworth, Bessel, Chebyshev, and elliptic filters. A detailed analysis of the impact of the structural parameters and fabrication tolerances is provided to facilitate device design and optimization. The requirements for practical applications are also considered. These results theoretically verify the effectiveness of using 3WC-SLR resonators as multi-functional integrated photonic filters for flexible spectral engineering in diverse applications.

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