20 February 2017 Frequency-axis light transport and topological effects in dynamic photonic structures
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Abstract
We study the ring resonator under a dynamic modulation. Each ring resonator supports a set of resonant modes with an equal spacing. We find that the system exhibits a spectral Bloch oscillation along the frequency axis when we introduce a frequency detuning in the modulation frequency. A periodic switching of the detuning brings out a unidirectional translation of the frequency of light. Moreover, in an array of rings, each of which is dynamically modulated with a different phase, we see topologically-protected edge states. Our work points to a new capability for the control of light in the frequency space.
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Luqi Yuan, Luqi Yuan, Yu Shi, Yu Shi, Shanhui Fan, Shanhui Fan, } "Frequency-axis light transport and topological effects in dynamic photonic structures", Proc. SPIE 10112, Photonic and Phononic Properties of Engineered Nanostructures VII, 101121O (20 February 2017); doi: 10.1117/12.2257705; https://doi.org/10.1117/12.2257705
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