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利用法诺共振和亚波长光限制的全光开关。

All-optical switch exploiting Fano resonance and subwavelength light confinement.

作者信息

Saudan Quentin, Bekele Dagmawi A, Xiong Meng, Yvind Kresten, Galili Michael, Mørk Jesper

机构信息

DTU Electro, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark.

Phanofi ApS, DK-2800 Kongens Lyngby, Denmark.

出版信息

Nanophotonics. 2025 Feb 13;14(10):1625-1633. doi: 10.1515/nanoph-2024-0644. eCollection 2025 May.

DOI:10.1515/nanoph-2024-0644
PMID:40444201
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12116226/
Abstract

We propose and experimentally demonstrate a small-mode volume bowtie cavity design for all-optical switching applications using a waveguide-cavity structure that exploits asymmetric Fano resonance lineshapes. The bowtie cavity has a mode volume that is five times smaller than conventional (H0-type) photonic crystal point-defect cavities enabling higher nonlinearity and faster switching. Blue and red-detuned Fano resonant devices based on bowtie cavity designs have been fabricated and characterized. Measured linear transmission spectra have been compared to coupled-mode theory models to extract key parameters such as Q-factors. Furthermore, all-optical switching at 2.5 Gbps have been demonstrated in a wavelength-conversion experiment.

摘要

我们提出并通过实验证明了一种用于全光开关应用的小模式体积蝴蝶结腔设计，该设计采用了利用非对称法诺共振线形的波导-腔结构。蝴蝶结腔的模式体积比传统（H0型）光子晶体点缺陷腔小五倍，从而实现更高的非线性和更快的开关速度。基于蝴蝶结腔设计的蓝失谐和红失谐法诺共振器件已被制造并表征。已将测量的线性传输光谱与耦合模理论模型进行比较，以提取诸如品质因数等关键参数。此外，在波长转换实验中已证明了2.5 Gbps的全光开关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/cdb6c66a1520/j_nanoph-2024-0644_fig_007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/3ba205194d65/j_nanoph-2024-0644_fig_001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/6bbd11ec6df6/j_nanoph-2024-0644_fig_002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/8c23cde6b003/j_nanoph-2024-0644_fig_003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/e7db2f128e6c/j_nanoph-2024-0644_fig_004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/836bbb88f925/j_nanoph-2024-0644_fig_005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/b9faa64bb487/j_nanoph-2024-0644_fig_006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/cdb6c66a1520/j_nanoph-2024-0644_fig_007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/3ba205194d65/j_nanoph-2024-0644_fig_001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/6bbd11ec6df6/j_nanoph-2024-0644_fig_002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/8c23cde6b003/j_nanoph-2024-0644_fig_003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/e7db2f128e6c/j_nanoph-2024-0644_fig_004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/836bbb88f925/j_nanoph-2024-0644_fig_005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/b9faa64bb487/j_nanoph-2024-0644_fig_006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d1d4/12116226/cdb6c66a1520/j_nanoph-2024-0644_fig_007.jpg

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本文引用的文献

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Self-assembled photonic cavities with atomic-scale confinement.具有原子级限制的自组装光子腔。
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Two regimes of confinement in photonic nanocavities: bulk confinement versus lightning rods.光子纳米腔中的两种限制机制：体限制与避雷针效应。
Opt Express. 2022 Apr 25;30(9):15458-15469. doi: 10.1364/OE.448929.
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Crosstalk-free all-optical switching enabled by Fano resonance in a multi-mode photonic crystal nanocavity.多模光子晶体纳米腔中基于法诺共振实现的无串扰全光开关
Opt Express. 2022 Feb 28;30(5):7457-7466. doi: 10.1364/OE.449588.
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Sci Adv. 2018 Aug 24;4(8):eaat2355. doi: 10.1126/sciadv.aat2355. eCollection 2018 Aug.
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Self-Similar Nanocavity Design with Ultrasmall Mode Volume for Single-Photon Nonlinearities.具有超小模式体积的自相似纳米腔设计用于单光子非线性效应
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Gain enhanced Fano resonance in a coupled photonic crystal cavity-waveguide structure.在耦合光子晶体腔波导结构中获得增强的 Fano 共振。
Sci Rep. 2016 Sep 19;6:33645. doi: 10.1038/srep33645.
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