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3 November 2016 Tunable and flat optical delay line based on double rings resonators
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We theoretically investigate a basic structure that the series-coupled double ring resonator coupled two straight waveguide. We calculate the transmission function and phase shift through transfer matrix theory .The system consists of two rings, three straight waveguide and four couplers which the drop port and the though port are coupled to a bus waveguide .We obtain a tunable flat delay line which mitigates the deleterious effects of group delay dispersion in this structure through adjusting 4 coupling coefficient of the couplers, the attenuation factor of ring waveguide and the perimeter of 2 rings. The ability to realize the phenomenon is important for applications such as optical switching, and tunable bandwidth filter applications.
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Kaiyue Qi, Yundong Zhang, Yongfeng Wu, Hui Li, and Ping Yuan "Tunable and flat optical delay line based on double rings resonators", Proc. SPIE 10029, Quantum and Nonlinear Optics IV, 1002916 (3 November 2016);


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