Results 31 to 40 of about 319,473 (298)

High-resolution, large dynamic range fiber length measurement based on frequency-shifted asymmetrical Sagnac interferometer [PDF]

open access: yes, 2005
We propose and experimentally demonstrate a single-mode fiber length and dispersion measurement system based on a novel frequency-shifted asymmetric Sagnac interferometer incorporating an acousto-optic modulator (AOM).
Lo, Hoi-Kwong   +3 more
core   +2 more sources

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

Few-Mode Elliptical-Core Fiber Data Transmission

open access: yesIEEE Photonics Technology Letters, 2012
Spatial mode-division-multiplexing is seen as paramount to overcoming the bandwidth limitations of single-mode fiber. In this letter, spatial-multiplexing of polarization-maintaining, elliptical-core fiber is proposed using asymmetric Y-junctions. Asymmetric Y-junctions also allow for straightforward wavelength- and polarization-multiplexing. Numerical
Riesen, Nicholas   +2 more
openaire   +3 more sources

Design of Highly Elliptical Core Ten-Mode Fiber for Space Division Multiplexing With 2 × 2 MIMO

open access: yesIEEE Photonics Journal, 2019
In this paper, we propose a weakly coupled few-mode fiber requiring only 2 × 2 multi-in multi-out equalizer blocks, which makes it compatible with standard coherent receivers with polarization diversity.
Alessandro Corsi   +3 more
doaj   +1 more source

Deep Learning for Computational Mode Decomposition in Optical Fibers

open access: yesApplied Sciences, 2020
Multimode fibers are regarded as the key technology for the steady increase in data rates in optical communication. However, light propagation in multimode fibers is complex and can lead to distortions in the transmission of information.
Stefan Rothe   +3 more
doaj   +1 more source

Mode division multiplexing using an orbital angular momentum mode sorter and MIMO-DSP over a graded-index few-mode optical fibre [PDF]

open access: yes, 2015
Mode division multiplexing (MDM)– using a multimode optical fiber’s N spatial modes as data channels to transmit N independent data streams – has received interest as it can potentially increase optical fiber data transmission capacity N-times with ...
Ahmed, Nisar   +14 more
core   +2 more sources

Experimental Study on Transverse Mode Instability Characteristics of Few-Mode Fiber Laser Amplifier Under Different Bending Conditions

open access: yesIEEE Photonics Journal, 2022
We studied the transverse mode instability (TMI) characteristics of few-mode fiber laser amplifier employing ytterbium-doped fiber (YDF) with core/cladding diameter of 30/400 μm under different bending diameters.
Yujun Wen   +6 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

Observation of Interaction of Spin and Intrinsic Orbital Angular Momentum of Light [PDF]

open access: yes, 2017
Interaction of spin and intrinsic orbital angular momentum of light is observed, as evidenced by length-dependent rotations of both spatial patterns and optical polarization in a cylindrically-symmetric isotropic optical fiber.
Gregg, Patrick   +6 more
core   +3 more sources

Mode-Dependent Loss Equalized Few-Mode Fiber Photonic Lantern

open access: yesIEEE Photonics Journal
We propose and fabricate an unconventional photonic lantern that is not only able to achieve mode multiplexing and demultiplexing, but also has the functionality of mode-dependent loss equalization.
Yingxuan Li   +5 more
doaj   +1 more source

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