Results 11 to 20 of about 11,380 (266)

Characteristics of optical system generating ultra-wide photonic band gap and its potential practicability

open access: yesResults in Physics, 2023
In this study, we design a one-dimensional periodic ring multi-connected optical waveguide network to solve the problem of obtaining ultra-wide photonic band gaps that are too complex for the photonic band gap width to be tuned.
Yan Zhi   +11 more
doaj   +1 more source

Multi-Node All-Optical Interconnect Network Routing for Data-Center Parallel Computers

open access: yesIEEE Photonics Journal, 2019
A multi-node all-optical interconnect network-routing architecture scheme and implementation technology are designed to improve high-speed and large-capacity data transmission in data centers.
Shuailong Yang   +5 more
doaj   +1 more source

Inverse-designed single-mode and multi-mode nanophotonic waveguide switches based on hybrid silicon-Ge2Sb2Te5 platform

open access: yesResults in Physics, 2021
In this paper, we numerically theorize a series of single-mode, dual-mode and three-mode nanophotonic waveguide switches by first combining inverse design algorithm with hybrid silicon-Ge2Sb2Te5 platform. More importantly, these devices realize switching
Hansi Ma   +4 more
doaj   +1 more source

Design and fabrication of silicon photonic crystal optical waveguides [PDF]

open access: yesJournal of Lightwave Technology, 2000
We have designed and fabricated waveguides that incorporate two-dimensional (2-D) photonic crystal geometry for lateral confinement of light, and total internal reflection for vertical confinement. Both square and triangular photonic crystal lattices were analyzed. A three-dimensional (3-D) finite-difference time-domain (FDTD) analysis was used to find
LonÄar, Marko   +3 more
openaire   +2 more sources

Coupling Performance Enhancement of GaSb-Based Single-Transverse-Mode Lasers with Reduced Beam Divergence Obtained via near Field Modulation

open access: yesPhotonics, 2022
Symmetric narrow waveguide structure has been developed and fabricated to achieve low beam divergence and improved coupling performance of the 1.95 μm GaSb-based single-transverse-mode diode lasers.
Tianfang Wang   +9 more
doaj   +1 more source

Design and simulation of waveguide-integrated Ge/SiGe quantum-confined Stark effect optical modulator based on adiabatic coupling with SiGe waveguide

open access: yesAIP Advances, 2021
We report on the design and simulation of a waveguide-integrated Ge/SiGe quantum-confined Stark effect (QCSE) optical modulator based on the use of a Ge-rich SiGe relaxed buffer on a graded buffer as an optical waveguide.
Worawat Traiwattanapong   +6 more
doaj   +1 more source

SU-8 Based Waveguide for Optrodes

open access: yesProceedings, 2018
Neural probes can be equipped with light for optogenetics applications. Different approaches are used for delivering light to the tissue: an optical fiber coupled to the probe, a µLED or a waveguide integrated on the probe.
Sara Pimenta   +7 more
doaj   +1 more source

Numerical Analysis of Multilayer Optical Waveguide Modes based on Effective Refractive Index Method

open access: yesGuangtongxin yanjiu, 2023
The effective and efficient refractive index of a multilayer optical waveguide is computed by taking into account the various order modes of the waveguide, such as the Quasi-Transverse Electric/Transverse Magnetic (Quasi-TE/TM) mode.
HE Wei   +3 more
doaj  

Design and Simulation Investigation of Si3N4 Photonics Circuits for Wideband On-Chip Optical Gas Sensing around 2 µm Optical Wavelength

open access: yesSensors, 2021
We theoretically explore the potential of Si3N4 on SiO2 waveguide platform toward a wideband spectroscopic detection around the optical wavelength of 2 μm.
Natnicha Koompai   +5 more
doaj   +1 more source

A Dew-Condensation Sensor Exploiting Local Variations in the Relative Refractive Index on the Dew-Friendly Surface of a Waveguide

open access: yesSensors, 2023
We propose a sensor technology for detecting dew condensation, which exploits a variation in the relative refractive index on the dew-friendly surface of an optical waveguide.
Subin Hwa   +5 more
doaj   +1 more source

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