Fabrication tolerance analysis of grating couplers between optical fibers and silicon waveguide
Sign Up to like & getrecommendations! Published in 2020 at "Optik"
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
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
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
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
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
Sign Up to like & getrecommendations! Published in 2017 at "Optics and Laser Technology"
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
High-efficiency dual-level heterogenous grating coupler on CMOS-compatible silicon-lithium niobate platform
Sign Up to like & getrecommendations! Published in 2024 at "Applied Physics Letters"
DOI: 10.1063/5.0215468
Abstract: We present the design and experimental demonstration of multilayer etched CMOS-compatible grating couplers with high efficiency on a heterogeneous silicon-lithium niobate platform. The dual-level grating coupler comprises 90 nm-thick Si waveguides and 220 nm-thick Si grating with… read more here.
Keywords: cmos compatible; efficiency; silicon lithium; grating coupler ... 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
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Lightwave Technology"
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
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
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
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Photonics Journal"
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
Inverse Designed Grating Coupler With Low Loss and High Bandwidth on LNOI Platform
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2024.3351199
Abstract: A grating coupler structure on a X-cut lithium niobate on insulator (LNOI) platform is designed and demonstrated. The utilized inverse design method is based on gradient-based adjoint optimization method, which is time saving and with… read more here.
Keywords: coupler; lnoi platform; inverse; grating coupler ... See more keywords
Efficient Polarization-Diversity Grating Coupler With Multipolar Radiation Mode Enhancement
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2025.3556127
Abstract: Two-dimensional (2D) diffraction gratings offer a polarization-independent coupling solution between the planar photonic chips and optical fibers, with advantages including placement flexibility, ease of fabrication, and tolerance to alignment errors. In this work, we first… read more here.
Keywords: polarization; radiation mode; multipolar radiation; grating coupler ... See more keywords