Manipulation of extinction features in frequency combs through the usage of graphene

Lately, the integration of two-dimensional materials into semiconductor devices has allowed the modification of their effective index by simply applying a modest voltage (between 0 and 3 volts). In this work, we present a device composed of two evanescently coupled silicon microring resonators where...

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Bibliographic Details
Published in:Optics express 2018-06, Vol.26 (12), p.15490-15502
Main Authors: Barturen, Mariana, Abadía, Nicolás, Milano, Julián, Costanzo Caso, Pablo A, Plant, David V
Format: Article
Language:English
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Summary:Lately, the integration of two-dimensional materials into semiconductor devices has allowed the modification of their effective index by simply applying a modest voltage (between 0 and 3 volts). In this work, we present a device composed of two evanescently coupled silicon microring resonators where both rings have a graphene layer on top. This design is aimed to produce frequency combs with transmission characteristics controlled upon voltage application to the graphene layer. We numerically analyze the device response as a function of the incident wavelength and applied voltage. The results showed a low input intensity (0.6 GW/cm ) needed and a rapid response time (0.1 μs), in comparison to devices controlled by heat injection.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.26.015490