Inverse taper coupler can reduce the scattering of light by the vertical overlap of two inverse taper structures. Although a relative high coupling efficiency can be obtained, the application
Because fiber- grating couplers usually contain strong index perturbations on scales near the wavelength of light, FDTD is most commonly used to simulate these structures.
A novel dual-layer grating coupler was designed for efficient vertical coupling between a single-mode fiber and silicon nanowires, with characteristics of polarization diversity and both
In this work, a bidirectional grating coupler for perfectly vertical coupling is proposed. The coupling efficiency is enhanced using a silicon nitride (Si3N4) layer above a uniform grating.
Herein, a high-efficiency dual-layer grating coupler is demonstrated for vertical polarization-diversity fiber-chip coupling. The two waveguide layers are
Abstract and Figures A Silicon-on-insulator (SOI) perfectly vertical fibre-to-chip grating coupler is proposed and designed based on engineered
Part 8: Fiber Couplers and Splitters Figure 1: A 2-by-2 fiber coupler. When using fiber optics, one often needs to use fiber couplers for various purposes. Some
We demonstrate highly efficient couplers in a two-dimensional grating configuration for a vertical fiber-coupling fabricated in the silicon-on-insulator platform. A combination of sub-wavelength
In summary, we design and experimentally demonstrate the topology-optimized 1D and 2D couplers featuring ultracompact footprint, a perfectly vertical coupling scheme, compatibility with
A fiber directional coupler is defined as an optical component that splits and combines optical signals by utilizing the interference of evanescent waves from two closely positioned fibers, enabling power
A unidirectional dual-wavelength-band grating coupler with one-dimensional (1D) subwavelength structures is proposed and experimentally demonstrated.
to the perfect vertical coupling configuration. The proposed double-layer 2D grating includes 70 nm shallowly etched holes on the 220 nm thick SOI and 160 m thick aligned poly-Si teeth deposited on
We propose and design a novel dual-wavelength-band grating coupler on 220-nm-thick silicon-on-insulator and experimentally investigate its capability to couple two wavelength bands simultaneously
They can be ordered and built as 1x2 or 2x2 leg count. Customers can choose Singlemode, Dual Window which means the Couplers/Splitters works equally well
We experimentally demonstrate a novel, to the best of our knowledge, three-port grating coupler (TPGC) for dual-wavelength-band operation. The TPGC can couple light to/from two ports for
High‐performance grating couplers on 220‐nm thick silicon by inverse design for perfectly vertical coupling Mingxiang Yang 1,2, Yunjie Yan 1, Zhenlin Wu 1, YiYing Gu 1, Shiyuan Zhao 1, Geert
In particular, the waveguide grating coupler is designed to couple light transmitted between an integrated optical waveguide and optical fibers including single mode, few-mode, and multimode fiber
We systematically present experimental and theoretical results for the dual-wavelength switching of 1560 nm, 75 fs signal pulses (SPs) driven by 1030 nm, 270 fs control pulses (CPs) in a dual-core fiber
Our device are designed on a standard 220 nm SOI platform and utilizes a vertical fiber coupling configuration, offering significant advantages in terms of ease of packaging, alignment, and
Here we present a flexible strategy for the realization of highly efficient grating couplers on such low-index photonic platforms.
arXiv:2407.14432v1 [physics.optics] 19 Jul 2024 Experimental Demonstration of Eficient and Polarization-Diversity Fiber-Chip Coupling by 2D Grating Couplers with 193-nm DUV Lithography
We propose and fabricate a novel four-port polarization diversity coupler for vertical coupling. With the help of 45° reflectors and improved 2x1 couplers, an ultralow coupling loss of
In this work, we propose and experimentally demonstrate a grating coupler for perfectly-vertical fiber-to-chip efficient coupling to thin-film silicon nitride waveguides. The device consists...
Dual-wavelength-band operation is obtained by adding an output port to couple upstream wavelength on existing polarization-splitting grating coupler for downstream wavelength.
In the past decades, considerable research efforts have been made on in-plane grating couplers to address their insufficiency in coupling efficiency,
In this work, we proposed and experimentally demonstrated a highly efficient 2D grating coupler fabricated with 193-nm deep-ultraviolet (DUV) lithography on the 220-nm silicon-on-insulator
Wideband Optical Couplers split or couple optical power in two wavelength regions while maintaining a very broad operating bandwidth. Split and coupling ratios are available from 5% to 50%. WBCs are
We propose a broadband high-efficiency grating coupler for perfectly vertical fiber-to-chip coupling. The up-reflection is reduced, hence enhanced
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