20 February 2017 Superluminal and slow light in eye-like ring resonator
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We investigate the phase and group delay in eye-like ring resonator with the effect of different coupling coefficients and attenuation factors. The eye-like structure is composed of two bus waveguides coupling with the outer ring and the two rings coupling together which have the same perimeters. The eye-like ring resonator has two outputs which have different transmission characteristics. In this paper, we measure the group delay of the two outputs through changing the coupling coefficients and the attenuation factors of the inner and the outer ring. The result shows that the two outputs have reverse group delay (superluminal and slow light) which will have potential use in slow light fiber, optical buffers and optical switches.
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Yundong Zhang, Kai Ma, Yongfeng Wu, Huaiyin Su, Hui Li, and Ping Yuan "Superluminal and slow light in eye-like ring resonator", Proc. SPIE 10119, Slow Light, Fast Light, and Opto-Atomic Precision Metrology X, 101190M (20 February 2017); doi: 10.1117/12.2261150; https://doi.org/10.1117/12.2261150


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