Results 41 to 50 of about 220,476 (294)

Modal noise in few-mode fibers

open access: yesGround-based and Airborne Instrumentation for Astronomy IX, 2022
Proceeding of SPIE Telescopes+Instrumentation ...
openaire   +2 more sources

Observation of multimode solitons in few-mode fiber

open access: yesOptics Letters, 2016
We experimentally isolate and directly observe multimode solitons in few-mode graded-index fiber. By varying the input energy and modal composition of the launched pulse, we observe a continuous variation of multimode solitons with different spatiotemporal properties. They exhibit an energy-volume relation that is distinct from those of single-mode and
Zhu, Zimu   +3 more
openaire   +4 more sources

Accurate Analysis of Crosstalk Between LP$_{11}$ Quasi-Degenerate Modes Due to Offset Connection Using True Eigenmodes

open access: yesIEEE Photonics Journal, 2018
Linearly polarized (LP) modes in few-mode fibers are not true eigenmodes but approximated modes constituting of linear combinations of true eigenmodes.
Seiya Miura   +2 more
doaj   +1 more source

Few-mode fibers and AO-assisted high resolution spectroscopy: coupling efficiency and modal noise mitigation

open access: yes, 2017
NIRPS (Near Infra-Red Planet Searcher) is an AO-assisted and fiber-fed spectrograph for high precision radial velocity measurements that will operate in the YJH-bands.
Blind, N., Conod, U., Wildi, F.
core   +1 more source

Enhancement of modal stability through reduced mode coupling in a few-mode fiber for mode division multiplexing [PDF]

open access: yes, 2018
We demonstrate a novel approach to enhance the modal stability between the modes of a few-mode fiber (FMF) by increasing the effective index differences between these modes.
Argyros   +15 more
core   +1 more source

Sub-sampled modal decomposition in few-mode fibers

open access: yesOptics Express, 2021
Retrieving modal contents from a multimode beam profile can provide the most detailed information of a beam. Numerical modal decomposition is a method of retrieving modal contents, and it has gained significant attention owing to its simplicity. It only requires a measured beam profile and an algorithm.
Kyuhong Choi, Changsu Jun
openaire   +2 more sources

Dynamic Control of Distal Spatial Mode Pattern Output From Multimode Fiber Using Integrated Coherent Network

open access: yesIEEE Photonics Journal, 2023
The mode field distribution at the distal end of a multimode fiber can vary randomly when environmental perturbations introduce changes in the relative phases of different eigenmodes and variations in coupling among modes.
Dan Yi, Xuetong Zhou, Hon Ki Tsang
doaj   +1 more source

Few-Mode Fibers: Characterizations and Applications

open access: yes2023 Optical Fiber Communications Conference and Exhibition (OFC), 2023
We report design guidelines and modal loss characterizations (light scattering and extra-loss phenomena) of few-mode fibers that allow optimizing their crosstalk, differential mode group delay and differential mode attenuation for practical applications.
Bigot, M.   +4 more
openaire   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Dead Zone Fault Detection Optimization Method for Few-Mode Fiber Links Based on Unexcited Coupled Higher-Order Modes

open access: yesPhotonics
The traditional single-mode fiber (SMF) optical time domain reflectometer (OTDR) may not be able to accurately detect and locate fault events in the dead zone of few-mode fiber (FMF) links.
Feng Liu, Tianle Gu, Zicheng Huang
doaj   +1 more source

Home - About - Disclaimer - Privacy