21 February 2014 Experimental observations of the transition from fast light to slow light in a side-coupled ring resonator
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Proceedings Volume 8998, Advances in Slow and Fast Light VII; 899818 (2014) https://doi.org/10.1117/12.2047580
Event: SPIE OPTO, 2014, San Francisco, California, United States
Abstract
We report the experimental observation of dispersion transition from abnormal dispersion (fast light) to normal dispersion (slow light) in a side-coupled ring resonator. We reveal that the transition from fast light to slow light can occur, when the tuned loss of the resonator results in the experience from the undercoupled regime to the overcoupled regime. Also, we experimentally fabricate the fiber side-coupled ring resonator, and measure the group delay of the resonator by coupling the resonator to a fiber Mach-Zehnder interferometer (MZI). The measured experimental results demonstrate the dispersion transition, and are in good agreement with the corresponding theoretical results. The sidecoupled resonator with the tunable dispersion (group delay) can exploited for optical storage devices, slow light Fourier transform (FT) interferometric spectrometers, white light cavities (WLCs), optical switches, optical routers, and optical sensors.
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Yundong Zhang, Yundong Zhang, Xuenan Zhang, Xuenan Zhang, Xiaoqi Liu, Xiaoqi Liu, Kaiyang Wang, Kaiyang Wang, Ping Yuan, Ping Yuan, } "Experimental observations of the transition from fast light to slow light in a side-coupled ring resonator", Proc. SPIE 8998, Advances in Slow and Fast Light VII, 899818 (21 February 2014); doi: 10.1117/12.2047580; https://doi.org/10.1117/12.2047580
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