Waveguide Coupler
The fiber-optic waveguide couplers have attracted much attention recently due to their interesting properties of coupling the mode or energy of the transmitted light between different optical
Spatial
Optical
Coupling
Planar
Silicon Photonics
Breaking the in-coupling efficiency limit in waveguide-based AR
An anomalous polarization conversion in polarization volume gratings is discovered to break the in-coupling efficiency limit in waveguide displays, which holds immense potential for
Advanced Coupling Technologies for Planar and Strip Waveguides
Grating couplers are frequently used to couple free-space beams to thin-film waveguides on planar substrates. We use finite element method (FEM) simulations to analyze the effect of
Spatial resolution effect of light coupling structures
Here, we identify a general design principle based on the Fourier properties of the coupling surface and investigate the impact of spatial resolution on the performance.
Transmission characteristics of planar optical waveguide devices on
By integrating the frontier achievements in waveguide optics, material science and micro-processing technologies, planar optical waveguide devices have adopted planar lightwave circuit
Calculation of coupling length for spatial waveguides using planar
The analysis results indicate that the coupling length strongly depends on the center–center separation space. Therefore, the coupling length of spatial waveguides can be
Grating Couplers on Silicon Photonics: Design Principles
One important issue of silicon photonics that comes with its high integration density is an interface between its high-performance integrated waveguide devices and optical fibers or free-space
Advanced Coupling Technologies for Planar and Strip Waveguides
As a novel coupling technique, we propose to use external gratings fabricated on the end face of a collimating micro lens or immediately on the exit face of an optical fiber to couple light from
Efficient coupling of topological photonic crystal waveguides
Topological photonic structures enable robust light transport but face coupling challenges. The authors demonstrate transverse spin matching governs the coupling between the
2.7 Waveguides and Integrated Optics
2.7 Waveguides and Integrated Optics As with electronics, miniaturization and integration of optics is desired to reduce cost while increasing functionality and reliability. One essential el-ement is the
Optical meta-waveguides for integrated photonics and beyond
Recent years have witnessed substantial potential in allying meta-optics with diverse waveguide platforms to enable exotic manipulation of guided light signals. This review cataloged
(PDF) Calculation of the coupling coefficients for spatial waveguides
The coupling coefficients are important parameters for three-dimensional integrated optical devices. Schematic diagram of planar waveguides (a) and spatial waveguides (b). .
Planar Optical Waveguide and Coupler Analysis
Abstract Planar optical waveguides in form of films on substrates as well as strips on and in substrates, and various strip derived structures serve in integrated optics to confine optical waves in components
Multimode interface between optical free-space
Here, we present an efficient, broadband interface capable of converting multiple higher-order free-space Laguerre–Gauss (LG) modes into corresponding waveguide modes using the multi
Efficient coupling of topological photonic crystal waveguides
According to this mechanism, efficient coupling between a topological waveguide (TWG) and a strip waveguide (SWG) is designed theoretically and demonstrated experimentally.
Calculation of coupling length for spatial waveguides using planar
Abstract A simple method to calculate the coupling length of the spatial waveguides is presented in this paper. Spatial waveguides with same center–center separation space and different
Three-dimensional compacted optical waveguide couplers designed
optical waveguide couplers designed by invariant engineerings Hongying Liu and L. F. Wei Abstract—Due to the limitations either on the sizes of devices and signal routing channels, the
Analysis of mode coupling in planar optical waveguides
Abstract. Coupling between the modes in a planar optical waveguide induced by a boundary step discontinuity, by a single groove and by a grating with arbitrary cross section, is investigated
Coupling performance of a planar lens to ultra slow-light photonic
In this study, we investigate the coupling of planar GRIN PC lenses to multiple classes of slow-light PC waveguides to assess how effectively planar-lens excitation can interface with different
Calculation of the coupling coefficients for spatial waveguides using
Abstract Spatial waveguides consisting of waveguides on different but parallel layers have been incorporated into many three-dimensional integrated optical devices. The coupling coefficients
Ultrashort spatiotemporal optical solitons in waveguide arrays: the
In the present work we study the formation of few-cycle spatiotemporal optical solitons in coupled waveguide arrays in the regime of combined linear and nonlinear couplings.
Grating Couplers on Silicon Photonics: Design Principles
In this paper, we review the current research progresses made on grating couplers, starting from their fundamental theories and concepts. Then, we conclude various methods to improve their
Coupling of optical spatial solitons in photorefractive multiple
Abstract A comprehensive theory predicting the existence of both incoherently coupled and coherently coupled grey and dark optical spatial solitons in multiple quantum well planar (MQW)
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If the fiber and waveguide are directly butt-coupled, a simple mode-overlap estimate can already introduce around 6–7 dB of coupling loss — before misalignment, reflections, scattering, or
Calculation of Coupling Length for Spatial Waveguides Using Planar
Therefore, the coupling length of spatial waveguides can be calculated using the existing formula for planar waveguides. The proposed method is verified using the three-dimensional full