High-efficiency self-focusing metamaterial grating coupler in silicon
Eficient fiber‐chip coupling interfaces are critically important for integrated photonics. Since surface gratings difract optical signals vertically out of the chip, these couplers can be placed
Exploring Optical Fiber Grating: Principles and Applications
Understanding these gratings begins with a solid grasp of optical fiber properties and the functionality of the gratings themselves. This article offers a detailed
Fabrication of Fiber Bragg Gratings with A Direct-Write Method
In this report, modeling and experimental results are presented for three fiber Bragg gratings that were fabricated in Newport F-SMF-28 fiber with the direct-write method. The model is based on coupled
Grating Couplers on Silicon Photonics: Design
One important issue of silicon photonics that comes with its high integration density is an interface between its high-performance integrated
Exploring Optical Fiber Grating: Principles and Applications
Intro Optical fiber grating technology serves as a foundational stone in modern communication and sensing systems. This technology relies on periodic
Theory, experiment, and application of optical fiber etching
Based on fiber Bragg grating (FBG), an online monitoring system for the etching process of optical fiber in a hydrofluoric (HF) acid solution has been designed. The variation curves of the wavelength shifts
Enhanced fiber mounting and etching technique for optimized optical
Different types of optical fiber sensors may require thinning of the cladding to allow propagated light to interact closer to the environmental stimuli. Chemical etching is commonly used
Optical Fiber Grating: Basics, Types & Uses
Optical fiber grating is a periodic structure. This structure affects the refractive index of an optical fiber. Fiber Bragg gratings are a specific type of optical fiber grating. Fiber Bragg gratings
Design and characterization of surface relief grating on etched
Proposed device shows sensitivity of 70 nm/RIU. We report a simple and compact optical fiber sensor based on surface relief gratings in conventional graded-index multimode optical fiber
Fabrication and Testing
Project 1: Fabrication and Testing of Rectangular Fiber Grating Coupler and GARC Coupler. Circular grating for the GARC coupler and partially etched rectangular
4-29-20-Fiber-Laser-Industrial-Etching-Marking
The fiber laser source generates a laser beam by pumping intense diode light into the end of fiber optic cables that have been doped with ytterbium. The energy from the diode light is absorbed by the
Justin Wirth Thesis Packet.pdf
The grating etch depth, grating period, and fill factor are the parameters that actually define the grating. Whereas the top layer height and buried oxide thickness were set by the chosen SOI wafers, these
Design and simulation of etched physical structure fiber Bragg grating
Side-polishing single-mode fiber (SP-SMF) to the D-fiber and etch the physical structure Grating into the polishing flat surface. The simulation results of SP-SMF by COMSOL software show that the electric
How a Fiber Grating Works and Its Real-World Applications
An optical fiber guides light along its core, a central channel of pure glass. The operation of a fiber grating relies on a permanent modification of this core, achieved by exposing a section of
Scalable and efficient grating couplers on low-index photonic
To simultaneously reach a high scattering efficiency and a near-unitary modal overlap with optical fibers, we make use of self-imaging gratings designed with a negative diffraction angle.
(PDF) Single-etch subwavelength engineered fiber-chip grating
Abstract We report, for the first time, on the design and experimental demonstration of fiber-chip surface grating couplers based on subwavelength grating engineered nanostructure
Grating-Assisted Fiber to Chip Coupling for SOI
The number of grating lines and its lateral width is designed to match the fiber mode cross section. Since fibers can be placed at multiple locations on
Uniformly thinned optical fibers produced via HF etching
A method for producing uniformly thinned (etched) optical fibers is described, which can also be employed to etch optical fibers containing a Bragg grating (FBG)
Library of single-etch silicon nitride grating couplers for low-loss
In this work, we develop a library of low-loss and fabrication-robust fiber-chip surface grating couplers realized on LPCVD-based Si 3 N 4 photonic platform, with a low-cost single-etch manufacturing and
Library of single‐etch silicon nitride grating couplers for low‐loss
Demonstrated grating couplers are promising for Si3N4 photonic chip prototyping by using standard optical fibers, leveraging low‐cost and foundry‐compatible fabrication technologies, essential
Fabrication and Testing
Optical setup for the fiber-grating coupling measurement Project 2: Fabrication of Self-Aligned Fiber Fixture A self-aligned part fabricated using two-photon
Review Grating Couplers on Silicon Photonics: Design Principles
ce between its high-performance integrated waveguide devices and optical fibers or free-space optics. Surface grating coupler is a preferred candida
D-fiber Etching / Core Removal / Optical Fiber Core Etching
Both of these processes are used here at BYU, the first for making surface relief fiber Bragg gratings and the second for core replacement technologies. The goal is to
Is the grating etched onto the surface of the fiber?
The grating is located inside the core of the optical fiber. In most OFSCN® products, such as the OFSCN® Polyacrylate Fiber Bragg Gratings or OFSCN® Polyimide Fiber Bragg
Grating Fabrication
This review introduces the technical details and characteristics of recently developed grating fabrication methods and provides suggestions of which grating fabrication methods to use in correspondence
High-efficiency single etch step apodized surface grating
Abstract Grating couplers are key elements enabling the coupling of light between planar waveguide circuits and optical fibers. In this work, it is
A facile process for fabricating long-period fiber grating sensors
Abstract This study proposes a facile method for fabricating long-period fiber gratings. Optical designs were created so that laser light could be written into the grating structure on the fiber cladding without