Contactless vital signs monitoring based on few-mode and multi-core fibers
Opto-Electronic Advances, 2020 Few-mode and multi-core fibers are proposed and demonstrated for contactless vital signs monitoring in this paper. In-line optical fiber interferometers using few-mode and multi-core fibers are designed and offset splicing is utilized for mode excitation.
Tan Fengze +4 more
doaj +3 more sources
Multi-mode optical fibers for connecting space-based spectrometers [PDF]
International Conference on Space Optics — ICSO 2010, 2017 Laser spectral analysis systems are increasingly being considered for in situ analysis of the atomic and molecular composition of selected rock and soil samples on other planets [1][2][3]. Both Laser Induced Breakdown Spectroscopy (LIBS) and Raman spectroscopy are used to identify the constituents of soil and rock samples in situ.
M. Ott +7 more
openaire +1 more source
Various Types of Light Guides for Use in Lossy Mode Resonance-Based Sensors
Sensors, 2023 A comparative study of figure-of-merit fiber sensors of the mass concentration of NaCl solutions based on single-mode and multi-mode fibers was carried out.
Dmitriy P. Sudas +2 more
doaj +1 more source
Integrated multi-mode glass ceramic fiber for high-resolution temperature sensing
Advanced Powder Materials, 2023 Optical temperature sensors, which can accurately detect temperature in biological systems, are crucial to the development of healthcare monitoring. To challenge the state-of-art technology, it is necessary to design single luminescence center doped ...
Yongsheng Sun +13 more
doaj +1 more source
Multi-channel fiber-optic temperature sensor system using an optical time-domain reflectometer
Results in Physics, 2018 In this study, we developed a multi-channel fiber-optic temperature sensor system (FTSS) using an optical time-domain reflectometer (OTDR). The developed FTSS consists of fiber-optic temperature-sensing probes, a fiber-optic coupler, a transmitting ...
H.J. Kim +6 more
doaj +1 more source
RESULTS OF EXPERIMENTAL RESEARCH AND SIMULATION OF MULTI-CORE FIBER WAVEGUIDE WITH FIBER BRAGG GRATINGS ARRAY [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2018 Subject of Research. The development and creation of a measurement system for determination and monitoring of the location and bends of extended objects in space are actual at the moment.We propose the creation of a sensitive part of fiber-optic ...
Egorova D.A., Kulikov A.V.
doaj +1 more source
Versatile graded-index multi-mode fiber for high capacity single- and multi-mode optical home network [PDF]
2014 The European Conference on Optical Communication (ECOC), 2014 A graded-index multi-mode fiber has been optimized to sustain a single excited mode when coupled with a standard single-mode fiber at 1310/1550nm while offering large effective modal bandwidth at 850nm under VCSEL excitations. Modeling and experimental results are presented.
Fall, Aboulaye +14 more
openaire +1 more source
Thermally Tunable Orbital Angular Momentum Mode Generator Based on Dual-Core Photonic Crystal Fibers
Nanomaterials, 2021 The combination of mode division multiplexing (MDM) based on orbital angular momentum (OAM) modes with wavelength division multiplexing (WDM) has attracted considerable attention due to its ability to increase optical transmission capacity.
Lianzhen Zhang +6 more
doaj +1 more source
Expressions for the nonlinear transmission performance of multi-mode optical fiber [PDF]
Optics Express, 2013 We develop an analytical theory which allows us to identify the information spectral density limits of multimode optical fiber transmission systems. Our approach takes into account the Kerr-effect induced interactions of the propagating spatial modes and derives closed-form expressions for the spectral density of the corresponding nonlinear distortion.
Ellis, A.D. +3 more
openaire +2 more sources
A Review of Using Few-Mode Fibers for Optical Sensing
IEEE Access, 2020 The development of few-mode fiber (FMF) has found numerous interesting applications in optical sensing. Given the remarkable capabilities of FMF, optical sensors of novel functionalities can be deployed.
Islam Ashry +6 more
doaj +1 more source