Pulse time reversal and stopping by a refractive index front

We discuss how dynamic light stopping and pulse time reversal can be implemented in dispersive waveguides via indirect photonic transitions induced by moving refractive index fronts. The previous concepts of light stopping/time reversal either require complex local variation of the device's refractive index or rely on the strict phase matching condition, which imposes limitations on the amount of manipulated information. Until now, only single pulses or continuous waves were manipulated experimentally. Our scheme is not limited by a strict phase matching condition and does not require local index variations, thus it can manipulate broadband signals in a single step process. Here, we present several numerically integrated results for pulse time reversal and stopping/storage via indirect front-induced transitions. The presented results are experimentally feasible using existing photonic waveguide technologies.

DDC Class

600: Technik

Funding(s)

Relativistische photonische Bandlückenspiegel in der integrierten Optik

Publikationsfonds 2020

More Funding Information

The authors acknowledge the support from the German Research Foundation (DFG) (Grant No. 392102174) as well as Dassault Systemes with their CST Studio Suite software. We further acknowledge support for the Open Access fees by Hamburg University
of Technology (TUHH) in the funding programme Open Access Publishing.

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publishedVersion

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https://creativecommons.org/licenses/by/4.0/

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5.0007986.pdf

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4.46 MB

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Pulse time reversal and stopping by a refractive index front