2016
DOI: 10.1021/acs.nanolett.6b04264
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Abstract: We experimentally demonstrate a nanoscale mode converter that performs coupling between the first two transverse electric-like modes of a silicon-on-insulator waveguide. The device operates by introducing a nanoscale periodic perturbation in its effective refractive index along the propagation direction and a graded effective index profile along its transverse direction. The periodic perturbation provides phase matching between the modes, while the graded index profile, which is realized by the implementation … Show more

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Cited by 84 publications
(73 citation statements)
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“…However, these structures may face the challenges of large footprints, limited operation bandwidth, and relatively large insertion losses. Metasurfaces are 2D artificial materials with subwavelength feature, allowing complete control of the phase, amplitude, and polarization of light beams . Integrated optical waveguides with metasurface structures can help address these challenges.…”
Section: Detailed Design Parameters For the Proposed Mode Convertersmentioning
confidence: 99%
See 2 more Smart Citations
“…However, these structures may face the challenges of large footprints, limited operation bandwidth, and relatively large insertion losses. Metasurfaces are 2D artificial materials with subwavelength feature, allowing complete control of the phase, amplitude, and polarization of light beams . Integrated optical waveguides with metasurface structures can help address these challenges.…”
Section: Detailed Design Parameters For the Proposed Mode Convertersmentioning
confidence: 99%
“…Mode conversions between the trans‐electric (TE) modes TE 0 , TE 1 , and TE 2 were achieved with a length of ≈10 µm at 1550 nm using silicon nanoantennas on LiNbO 3 or Si 3 N 4 waveguides by simulations . A nanoscale mode converter was theoretically proposed and experimentally demonstrated by introducing a periodic perturbation in its effective refractive index along the propagation direction and a graded effective index profile along its transverse direction. Mode conversion between TE 0 and TE 1 modes was successfully achieved with a length of 23 µm at 1550 nm.…”
Section: Detailed Design Parameters For the Proposed Mode Convertersmentioning
confidence: 99%
See 1 more Smart Citation
“…[242][243][244][245][246][247][248] With a metasurface, vertical incidence light can couple into the waveguide, [249] and the waveguide can act as an in-plane polarimeter. Metamaterials have great potential for controlling the propagation of light in a waveguide.…”
Section: Discussionmentioning
confidence: 99%
“…Metamaterials have great potential for controlling the propagation of light in a waveguide. [242][243][244][245][246][247][248] With a metasurface, vertical incidence light can couple into the waveguide, [249] and the waveguide can act as an in-plane polarimeter. [250] The effective relative permeability of the waveguide can also be controlled using split-ring resonators.…”
Section: Discussionmentioning
confidence: 99%