Results 11 to 20 of about 221,572 (292)

Intrinsic loss of few-mode fibers

Optics Express, 2018
We summarize theoretical formulae for determining the intrinsic loss of few-mode fibers and compare intrinsic losses among step-index and parabolic graded-index few-mode fibers (FMF) with different dopants, and with single-mode fibers (SMF). The low-loss characteristics of pure-silica-core FMFs, in comparison with SMFs, give rise to additional ...
Yaping, Liu, Zhiqun, Yang, Jian, Zhao, Lin, Zhang, Zhihong, Li, Guifang, Li   +5 more
openaire   +5 more sources

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, Lyu Weimin, Chen Shuyang, Liu Zhengyong, Yu Changyuan   +4 more
doaj   +3 more sources

Long distance transmission in few-mode fibers

Optics Express, 2010
Using multimode fibers for long-haul transmission is proposed and demonstrated experimentally. In particular few-mode fibers (FMFs) are demonstrated as a good compromise since they are sufficiently resistant to mode coupling compared to standard multimode fibers but they still can have large core diameters compared to single-mode fibers.
Yaman, Fatih, Bai, Neng, Zhu, Benyuan, Wang, Ting, Li, Guifang   +4 more
openaire   +5 more sources

Invited paper: Characterization of few mode fibers and devices [PDF]

Optical Fiber Technology, 2019
Abstract This paper reviews characterization techniques for few mode fibers and components. The focus is on interferometric techniques including spatial and spectral resolved imaging (S2). Simple interferometric measurements are shown to be able to give quite comprehensive information including measurement of relative group delay.
Grüner-Nielsen, Lars, Mathew, Neethu Mariam, Rottwitt, Karsten   +2 more
openaire   +4 more sources

Few-mode fiber based optical sensors

Optics Express, 2015
Few-mode fibers (FMFs) have found applications in optical communications and sensors with attractive features that standard single mode fiber (SSMF) do not possess. We report our recent progress on FMF based optical sensors, and show the potential of utilizing the spatial dimension for multi-parameter sensing with discrimination capability.
An, Li, Yifei, Wang, Qian, Hu, William, Shieh   +3 more
openaire   +3 more sources

Learning the matrix of few-mode fibers for high-fidelity spatial mode transmission

APL Photonics, 2022
Few-mode fibers (FMFs) are promising for advancements in transmission capacity in classical and quantum communications. However, the inherent modal crosstalk limits the practical application of FMF.
Qian Zhang, Stefan Rothe, Nektarios Koukourakis, Jürgen Czarske   +3 more
doaj   +1 more source

Autocompensating Measurement-Device-Independent quantum cryptography in few-mode optical fibers [PDF]

EPJ Web of Conferences, 2020
We present an autocompensating quantum cryptography technique for Measurement-Device-Independent quantum cryptography devices with different kind of optical fiber modes.
Liñares-Beiras Jesús, Prieto-Blanco Xesús, Balado Daniel, Carral Gabriel M.   +3 more
doaj   +1 more source

Rayleigh scattering in few-mode optical fibers [PDF]

Scientific Reports, 2016
AbstractThe extremely low loss of silica fibers has enabled the telecommunication revolution, but single-mode fiber-optic communication systems have been driven to their capacity limits. As a means to overcome this capacity crunch, space-division multiplexing (SDM) using few-mode fibers (FMF) has been proposed and demonstrated.
Zhen Wang, Hao Wu, Xiaolong Hu, Ningbo Zhao, Qi Mo, Guifang Li   +5 more
openaire   +3 more sources

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

Sensors, 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

Few-Mode Lensed Fibers

Journal of Lightwave Technology, 2018
Few-mode lensed fiber for focusing multiple spatial modes with minimal distortion are proposed and investigated numerically and experimentally, for the first time to the best of the authors’ knowledge. Although the conventional hyperbolic lens profile works effectively for the fundamental mode, it introduces severe distortion for high-order radial ...
He Wen, Huiyuan Liu, Yuanhang Zhang, Jian Zhao, Pierre Sillard, Rodrigo Amezcua Correa, Guifang Li   +6 more
openaire   +2 more sources