Graded Index Couplers for Next Generation Chip-to-Chip and Fiber-to
Flip-chip optical couplers which allow for low loss, broadband operation and automated passive assembly represent a solution for continued scaling. In this paper, we propose a novel
Chip
Fiber
Bragg
Grating
Efficiency Enhanced Grating Coupler for Perfectly Vertical Fiber-to
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. In the presence
Fiber Bragg Grating Sensors: Design, Applications, and
Fiber Bragg grating (FBG) sensors have emerged as advanced tools for monitoring a wide range of physical parameters in various fields, including structural health, aerospace, biochemical,
Fiber Bragg gratings embedded in 3D printed prototypes
In this study, we incorporated fiber optic sensors in 3D printed prototype parts. Fiber optic Bragg gratings embedded in polylactic acid were configured to measure strain and/or temperature.
Packaging and Temperature Compensation of Fiber Bragg Grating for
During last decades, sensor elements based on the fiber Bragg grating (FBG) have been widely studied and developed due to the advantages of immunity to electromagnetic interference,
Packaging methods of fiber-Bragg grating sensors in civil
Fiber-Bragg grating (FBG) sensors made on bare fibers are easily damaged when handled improperly during and after fabrication. As a protection from such damage, a novel
Optomechanical sensor network with fiber Bragg gratings
Leveraging commercially available fiber Bragg gratings, we achieve robust, low-loss, low-noise, and polarization-insensitive coupling with light sources.
Picture of the packaged chip with vertical fiber array normal to the
The use of a linear chirp in grating period reduces the second order Bragg reflection from the waveguide gratings and increases the coupling efficiency for perfectly vertical optical fibers...
All-Silicon Packaging Technology for Fiber Bragg Gratings and Its
A fiber Bragg grating (FBG) sensor includes three main parts, an FBG, a sensor substrate, and a packaging material. The most commonly used packaging material is epoxy resin adhesive, which is
Ultra-Compact Vertical Fiber-to-Chip Grating Couplers on Silicon-on
These results establish inverse design as a viable and scalable approach for compact, broadband, and fabrication-ready vertical fiber-to-chip interfaces across diverse fiber types.
Design and investigation of a dual-layer grating coupler
To balance the vertical coupling, polarization and wavelength diversity are still the main problems in recent research. In this work, a dual-layer
Compact inverse designed vertical coupler with bottom
In this work, we exploit topology optimization to design a compact vertical coupler incorporating a bottom reflector, which achieves sub-decibel coupling efficiency on the 220-nm...
Microstructure-Based Fiber-To-Chip Coupling of Polymer Planar
This article proposes and demonstrates a robust microstructure-based fiber-to-chip coupling scheme for planar Bragg grating devices.
Compact packaged silicon photonic Bragg grating sensor based on a
Furthermore, PIC-based Bragg grating sensors require a fiber connection, which makes their packaging and interconnection more complex. Herein, we implement the back side ball lens
Fiber Bragg grating online packaging technology based on 3D printing
In this paper, in order to investigate the influence of the packaging on FBG, we proposed a fiber Bragg grating packaging technology based on 3D printing, and the feasibility of this packaging
Fiber Bragg grating (FBG)-based sensors: a review of technology and
This review highlights significant advancements in Fiber Bragg Grating (FBG) sensors, detailing their operational principles, recent technological developments, and diverse applications in
Efficiency Enhanced Grating Coupler for Perfectly Vertical Fiber-to
Such a grating coupler design can provide an efficient and cost-effective solution for vertical fiber-to-chip optical coupling of a Wavelength Division Multiplexing (WDM) application.
Gecko-inspired self-adhesive packaging for strain-free temperature
Article Open access Published: 13 March 2023 Gecko-inspired self-adhesive packaging for strain-free temperature sensing based on optical fibre Bragg gratings Shuochao Liu, Pingyu Zhu,
High-efficiency grating couplers for vertical coupling in thin-film
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...
Athermally packaged fiber Bragg grating for sensor and DWDM
In this article, we propose and experimentally validate a simple and straightforward athermal packaging solution for FBG to counteract the changes in the central wavelength due to
Fiber Bragg grating online packaging technology based on 3D printing
To summarize, a 3D printing-based fiber Bragg grating packaging technology is proposed, and the feasibility of this packaging scheme is experimentally verified.
Graded Index Couplers for Next Generation Chip-to-Chip and Fiber-to
In this paper, we propose a novel scheme to vertically couple between silicon based waveguides on separate chips using graded index (GRIN) couplers in combination with an
Packaging-enhanced optical fiber-chip interconnect with enlarged
To overcome this issue, for use in single mode on-chip systems, we propose the incorporation of area-enlarged grating couplers working in conjunction with multimode fibers. This
High-Tolerance Grating Couplers for Vertical Backside Coupling
Abstract: To facilitate convenient packaging of photonic integrated circuits on a fiber tip, a silicon grating coupler designed for vertical backside coupling has been developed. In order to comply with foundry
Machine-learning-driven optimization of vertical fiber-to-chip coupling
Efficient light coupling in photonic integrated circuits (PICs) is vital for co-packaged optics (CPO) and in-package optical I/O (OIO). Grating couplers in PICs offer a viable solution for vertical
Microstructure-Based Fiber-To-Chip Coupling of Polymer Planar
Due to its outstanding robustness, the coupling scheme enables the application of planar Bragg grating devices in harsh environments. This fact is underlined by integrating a microstructure-coupled
Co-Packaged Optics — a deep dive | APNIC Blog
As fibre pitch shrinks and counts rise, alignment tolerance becomes a challenge. Techniques such as grating couplers with micro-lens arrays are being developed to ease alignment