Results 31 to 40 of about 63,682 (291)

Few-Mode Fiber Characterization System Based on the Spatially and Spectrally Imaging Technique

open access: yesSensors, 2022
With the widespread use of few-mode fibers, mode characteristics testing becomes essential. In this paper, current few-mode fiber testing techniques are discussed, and the S2 imaging technique is chosen and demonstrated to be capable of few-mode fiber ...
Jianxun Yu, Fengze Tan, Changyuan Yu
doaj   +1 more source

Characterization of few mode fibers by OLCI technique [PDF]

open access: yes2014 The European Conference on Optical Communication (ECOC), 2014
All LP modes of a few mode fiber are simultaneously characterized using phase-sensitive optical low-coherence interferometry. The differential modal group delay and absolute chromatic dispersion values of each mode are retrieved from a single measurement without spatial mode transformers.
Gabet, R.   +7 more
openaire   +1 more source

A Review of Using Few-Mode Fibers for Optical Sensing

open access: yesIEEE 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

Design of Few-Mode Fibers for Mode-Division Multiplexing Transmission

open access: yesIEEE Photonics Journal, 2013
We investigate the fiber parameters that meet the design conditions for low bending loss and an effectively few-mode operation on few-mode fibers with a step-index profile and a W-shaped refractive index profile for mode-division multiplexing ...
Motoki Kasahara   +7 more
doaj   +1 more source

Statistical Analysis of Differential Group Delay in Few-Mode Spun Optical Fiber [PDF]

open access: yes, 2022
This thesis proposes a statistical analysis of the differential group delay in few-mode optical fibers. The numerical analysis is performed by an accurate modeling of the propagation and coupling of a few-mode fiber, supporting the first 4 LP groups ...
Guerra, Gianluca
core  

Contactless vital signs monitoring based on few-mode and multi-core fibers

open access: yesOpto-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   +1 more source

Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing

open access: yesIEEE Access, 2020
We present a novel design of few-mode fiber (FMF) with a uniform differential mode group delay (U-DMGD) among propagating modes and apply the FMF to a single-fiber delay line module for implementing microwave photonic finite impulse response (FIR ...
Jian Zhao   +5 more
doaj   +1 more source

Few-mode elastomeric optical fibers

open access: yes, 2021
We present a new approach for producing elastomeric optical fibers with an optical behaviour corresponding to a few-mode optical fiber. Different fibers have been produced by first fabricating thermoplastic polyurethane preforms and subsequently drawing ...
Llera, Miguel   +7 more
core   +1 more source

Demonstration of Mode-Evolutional Multiplexer for Few-Mode Fibers Using Stacked Polymer Waveguide

open access: yesIEEE Photonics Journal, 2015
Mode-evolutional multi/demultiplexer for few-mode fibers was demonstrated using stacked polymer waveguides. Owing to the stacked structure, TE00, TE10, and TE01 modes, which correspond to LP01, LPeven11 , and LPodd 11 modes, respectively, were ...
T. Watanabe, Y. Kokubun
doaj   +1 more source

Recent Progress in Distributed Brillouin Sensors Based on Few-Mode Optical Fibers

open access: yesSensors, 2021
Brillouin scattering is a dominant inelastic scattering observed in optical fibers, where the energy and momentum transfer between photons and acoustic phonons takes place.
Yong Hyun Kim, Kwang Yong Song
doaj   +1 more source

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