Fabrication tolerance analysis of grating couplers between optical fibers and silicon waveguide
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DOI: 10.1016/j.ijleo.2019.163490
Abstract: Abstract The grating structure and its performance for coupling between fiber and silicon-based waveguide are studied and analyzed. The coupling mechanism is illustrated through the grating Bragg diffraction condition, and the effect of physical parameters… read more here.
Keywords: tolerance analysis; grating couplers; fabrication tolerance; grating coupler ... See more keywords
Coupling performance enhancement using SOI grating coupler design
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DOI: 10.1016/j.optcom.2018.06.012
Abstract: Abstract Grating couplers are one of the most significant elements for the coupling of light between optical fibers and photonic integrated circuits. In this paper, we present the design, fabrication and experimental characterization of Silicon… read more here.
Keywords: performance enhancement; grating coupler; coupler; coupling performance ... See more keywords
Efficient polymer waveguide grating coupler with directionality enhancement
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DOI: 10.1016/j.optcom.2020.125418
Abstract: Abstract Polymer is viewed as an ideal platform for integrated photonics sensing. We propose a polymer waveguide grating coupler with the enhancement of directionality. A gold film mirror beneath the grating coupler is introduced to… read more here.
Keywords: grating coupler; coupler; polymer waveguide; efficient polymer ... See more keywords
Highly efficient vertical fiber interfacing grating coupler with bilayer anti-reflection cladding and backside metal mirror
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DOI: 10.1016/j.optlastec.2016.08.001
Abstract: Abstract A highly efficient bidirectional grating coupler for perfectly vertical coupling is designed. With a Si3N4/SiO2 bilayer structure and a backside metal mirror acting as anti-reflection cladding (ARC) and substrate reflector respectively, the coupling efficiency… read more here.
Keywords: metal mirror; grating coupler; coupler; bilayer ... See more keywords
Grating Coupler With Reduced Back Reflection Using λ/4 Offset at Its Grating Sub-Teeth
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2889863
Abstract: We demonstrate a grating coupler with reduced back reflection on silicon-on-insulator (SOI) platform. Each grating tooth of the grating coupler is uniformly divided into multiple sub-teeth with λ/4 offset between two adjacent sub-teeth, reducing the… read more here.
Keywords: back reflection; sub teeth; coupler; grating coupler ... See more keywords
Two-Dimensional Apodized Grating Coupler for Polarization-Independent and Surface-Normal Optical Coupling
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DOI: 10.1109/jlt.2020.2986043
Abstract: A four-port grating coupler with etched square holes is proposed and demonstrated for surface-normal and polarization independent coupling. Benefiting from the perfectly vertical coupling and 1 × 4 power splitting/combing scheme, efficient polarization independent operation was achieved.… read more here.
Keywords: apodized grating; surface normal; grating coupler; polarization independent ... See more keywords
Compact Silicon Photonic Grating Coupler With Dual-Taper Partial Overlay Spot-Size Converter
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DOI: 10.1109/jphot.2017.2676340
Abstract: A compact silicon photonic grating coupler enabling fiber-to-chip light coupling at a minimized footprint is proposed. The proposed coupler, which is partially overlaid at the tapered region, downsizes the effective length of the spot-size converter… read more here.
Keywords: compact silicon; photonic grating; grating coupler; coupler ... See more keywords
A Grating Coupler Design for Optical Vortex Mode Generation in Rectangular Waveguides
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DOI: 10.1109/jphot.2021.3089664
Abstract: We propose and numerically verify a design approach to a grating coupler (GC) for in-plane generation and propagation of quasi-TE vortex modes with azimuthal order $\pm$1 within photonic integrated circuits (PICs). In the considered GC… read more here.
Keywords: generation; grating coupler; inline formula; design ... See more keywords
Compact high-efficiency perfectly-vertical grating coupler on silicon at O-band.
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DOI: 10.1364/oe.25.022032
Abstract: A compact, high-efficiency grating coupler is demonstrated for interfacing a silicon waveguide and a perfectly-vertical fiber at O-band. The grating lies on a tilted silicon membrane for minimizing the reflections. Circular grating lines are adopted… read more here.
Keywords: high efficiency; grating coupler; compact high; silicon ... See more keywords
Bimodal grating coupler design on SOI technology for mode division multiplexing at 1550 nm.
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DOI: 10.1364/oe.26.019445
Abstract: In this paper, we evaluate by means of simulation and experimentally the simultaneous coupling of the LP01x-LP11ax fiber modes and the TE0-TE1 nanophotonic SOI waveguide modes using a grating coupler for a two-mode fiber at… read more here.
Keywords: mode; bimodal grating; grating coupler; coupler ... See more keywords
Two-dimensional grating coupler on silicon with a high coupling efficiency and a low polarization-dependent loss.
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DOI: 10.1364/oe.380338
Abstract: Two-dimensional grating couplers are important components for silicon photonic circuits to achieve light coupling from/to a fiber for both polarizations. A two-dimensional grating coupler structure with a high coupling efficiency and a low polarization dependent… read more here.
Keywords: polarization dependent; dependent loss; grating coupler; two dimensional ... See more keywords