Reconfigurable nanocavity formation in graphene-loaded Si photonic crystal structures
書誌事項
- 公開日
- 2019-12-13
- 資源種別
- journal article
- 権利情報
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- https://doi.org/10.1364/OA_License_v1#VOR-OA
- https://opg.optica.org/policies/opg-tdm-policy.json
- DOI
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- 10.1364/oe.381608
- 10.1364/oe.27.037952
- 公開者
- Optica Publishing Group
説明
We propose and numerically demonstrate that a reconfigurable nanocavity can be created in a graphene-loaded Si photonic crystal waveguide. The cavity formation is caused by the local mode-gap modulation induced by electrostatic gate-tuning of graphene. Although most recent graphene photonic devices are based on a change in the imaginary part of the refractive index, here we make use of a change in the real part of the refractive index for gated graphene. We clarify that nanocavities can be formed in two different cases, red-shifted and blue-shifted tunings. These novel formation mechanisms enable us to create and annihilate a nanocavity in a reconfigurable way by varying the gate voltage, which is promising for novel control in photonic processing.
収録刊行物
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- Optics Express
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Optics Express 27 (26), 37952-, 2019-12-13
Optica Publishing Group
