Abstract

A compact quality factor ($Q$)-enhanced bandpass filter based on the electromagnetically induced transparency (EIT)-like effect between two-ring resonators was proposed and experimental demonstrated. The enhancement in $Q$ can be 2–3 orders of magnitude compared to the single ring bandpass filter, and a 27 times enhanced bandpass filter with a bandwidth of approximately 4.8 GHz was successfully realized. A downconversion analog photonic link (APL) based on the proposed filter has been presented and the spurious free dynamic range of the link was as high as $103.9\mathrm{dB}\text{-}{\mathrm{Hz}}^{2/3}$.

© 2013 Optical Society of America

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