Metamaterial-waveguide bends with effective bend radius < λ_0/2
TLDR
Broadband, efficient, all-dielectric metamaterial-waveguide bends that redirect light by 180 deg.Abstract:
We designed, fabricated, and characterized broadband, efficient, all-dielectric metamaterial-waveguide bends (MWBs) that redirect light by 180 deg. The footprint of each MWB is 3 μm×3 μm and redirection is achieved for single-mode waveguides spaced by 1.3 μm, which corresponds to an effective bend radius of 0.65 μm ( 80% and ∼70%, respectively. Furthermore, the MWBs have an operating bandwidth >66 nm (design) and >56 nm (experiments). Our design methodology that incorporates fabrication constraints enables highly robust devices. The methodology can be extended to the general routing of light in tight spaces for large-scale photonic integration.read more
Citations
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Journal ArticleDOI
Multimode silicon photonics
Chenlei Li,Dajian Liu,Daoxin Dai +2 more
TL;DR: In this article, a review of the recent progresses of multimode silicon photonic devices and circuits is given, including on-chip multichannel mode (de)multiplexers, multimode waveguide bends and crossings.
Journal ArticleDOI
Controlling evanescent waves using silicon photonic all-dielectric metamaterials for dense integration.
Saman Jahani,Saman Jahani,Sangsik Kim,Sangsik Kim,Jonathan Atkinson,Justin C. Wirth,Farid Kalhor,Farid Kalhor,Abdullah Al Noman,Ward D. Newman,Ward D. Newman,Prashant Shekhar,Kyunghun Han,Vien Van,Ray G. DeCorby,Lukas Chrostowski,Minghao Qi,Minghao Qi,Zubin Jacob,Zubin Jacob +19 more
TL;DR: In this paper, anisotropic all-dielectric metamaterials open a new degree of freedom in total internal reflection to shorten the decay length of evanescent waves.
Journal ArticleDOI
Controlling evanescent waves using silicon photonic all-dielectric metamaterials for dense integration
Saman Jahani,Saman Jahani,Sangsik Kim,Sangsik Kim,Jonathan Atkinson,Justin C. Wirth,Farid Kalhor,Farid Kalhor,Abdullah Al Noman,Ward D. Newman,Ward D. Newman,Prashant Shekhar,Kyunghun Han,Vien Van,Ray G. DeCorby,Lukas Chrostowski,Minghao Qi,Minghao Qi,Zubin Jacob,Zubin Jacob +19 more
TL;DR: It is demonstrated that anisotropic all-dielectric metamaterials open a new degree of freedom in total internal reflection to shorten the decay length of evanescent waves, and can reduce cross-talk and bending loss, which limit the integration density in photonic circuits.
Journal ArticleDOI
Integrated photonic power divider with arbitrary power ratios
TL;DR: An ultra-compact power splitter with a QR code-like nanostructure is designed by a nonlinear fast search method and measured transmission efficiencies of all the splitters are close to 80% over 30 nm wavelength range.
Journal ArticleDOI
Optical meta-waveguides for integrated photonics and beyond.
Yuan Meng,Yizhen Chen,Longhui Lu,Yimin Ding,Andrea Cusano,Jonathan A. Fan,Qiaomu Hu,Kaiyuan Wang,Zhenwei Xie,Zhoutian Liu,Yuanmu Yang,Qiang Liu,Mali Gong,Qirong Xiao,Shulin Sun,Minming Zhang,Xiaocong Yuan,Xingjie Ni +17 more
TL;DR: In this paper, the authors review recent advances in meta-structured waveguides that synergize various functional subwavelength photonic architectures with diverse waveguide platforms, such as dielectric or plasmonic waveguide and optical fibers.
References
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Journal ArticleDOI
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