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Few Mode Ring-Core Fibre Amplifier for Low Differential Modal Gain
2017
2017 European Conference on Optical Communication (ECOC)
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We report a few-mode ring-core fibre amplifier for mode division multiplexed transmission. ...
We achieve very low differential modal gain (<1dB) for 5 spatial modes over the C-band highlighting the benefits of the ring core approach. ...
2] and various active fibre designs have [3] [4] [5] been proposed to achieve low differential modal gain (DMG). ...
doi:10.1109/ecoc.2017.8345893
fatcat:jrgwiaosp5d7ba3lqmmfje365i
Mode Division Multiplexing Based on Ring Core Optical Fibres
2018
IEEE Journal of Quantum Electronics
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RCF-based optical amplifiers (both rare-earth doped and Raman) are shown to deliver low differential mode gain due to the radial confinement of light in the ring core. ...
In addition, RCF-based amplifiers can also provide more equalized gain for all guided signal modes because they have similar mode profiles [23, 24] , which can reduce the differential modal gain (DMG) ...
doi:10.1109/jqe.2018.2864561
fatcat:ayckl3gs2nbenh3xm3ionnivsq
Space-division multiplexing in optical fibres
2013
Nature Photonics
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2013 pre-print arXiv:1303.3908v1 fatcat:pavdws7r6nadfh4degpbx5j2da
or multi-mode) make no attempt to use these as parallel channels for independent signals. ...
Conspicuously, one potentially enormous source of improvement has however been left untapped in these systems: fibres can easily support hundreds of spatial modes, but today's commercial systems (single-mode ...
In general the modes will exhibit differential mode group delays (DMGD) and also differential modal loss or gain. ...
doi:10.1038/nphoton.2013.94
fatcat:egdr65aduzgrjmea5zx5esdwji
Yb-doped large-pitch fibres: effective single-mode operation based on higher-order mode delocalisation
2012
Light: Science & Applications
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Hence, fibre designs that allow for very large mode areas at high average powers with diffraction-limited beam quality are of enormous interest. ...
Ytterbium-doped, rod-type, large-pitch fibres (LPF) enable extreme fibre dimensions, i.e., effective single-mode fibres with mode sizes exceeding 100 times the wavelength of the guided radiation, by exploiting ...
for the effective single-mode operation of these few-mode fibres) is extremely challenging. ...
doi:10.1038/lsa.2012.8
fatcat:5ttxtncyjvdvdjt6sciku3nl2q
Mode group specific amplification length in an asymmetric LPG assisted few-mode EDFA
2017
Optics Communications
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modal gain (DMG) to any desired value. ...
The modes of FMF are launched into the central core of the EDF, are converted into ring modes using LPG for amplification and then converted back into central core modes using another LPG. ...
This imposes that the differential modal gain (DMG) be carefully controlled to compensate for the differential modal loss along the passive FMF span between repeaters. ...
doi:10.1016/j.optcom.2016.07.060
fatcat:pqsxlkiemrg6tewkpj4k6qvc3e
New optical fibres for high-capacity optical communications
2016
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
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In this paper, I review physical layer options that can be considered to address this requirement including the potential for reduction in both fibre loss and nonlinearity for single-mode fibres, the development ...
of ultrabroadband fibre amplifiers and finally the use of space division multiplexing. ...
In MDM, the individual modes accumulate differential mode group delays (DMGDs) during propagation and likely also differential modal loss or gain due to mode-dependent performance of the various in-line ...
doi:10.1098/rsta.2014.0441
pmid:26809569
pmcid:PMC4733920
fatcat:xtt576vybzdzhhnvqzpqlihc2m
Hollow-core photonic bandgap fibers: technology and applications
2013
Nanophotonics
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of a 5-m long state-of-the-art near-IR-guiding fibre; (C) is a simulation result showing a contour plot (2 dB spacing) of the intensity profile of the longitudinally propagating fundamental guided mode ...
Since the early conceptual and practical demonstrations in the late 1990s, Hollow-Core Photonic Band Gap Fibres (HC-PBGFs) have attracted huge interest by virtue of their promise to deliver a unique range ...
the first few core-guided modes, and those that substantially degrade the usefulness of the fibre, i.e., surface modes and higher-order core-guided modes. ...
doi:10.1515/nanoph-2013-0042
fatcat:jfczvrwg4vb7xks5ztzkdj2xwm
Demonstration of an erbium-doped fiber with annular doping for low gain compression in cladding-pumped amplifiers
2018
Optics Express
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Higher gain and saturation output power are also key issues in cladding-pumped multi-core amplifiers. ...
Small gain compression EDFAs are of interest for applications that require input channel reconfiguration. ...
When simultaneously amplifying multiple modes, the more uniform pump power distribution over the optical fiber crosssection can reduce differential modal gain [19] . ...
doi:10.1364/oe.26.026633
fatcat:jjtgtl7pn5et5doqcbjcvenf2e
Demonstration of amplified data transmission at 2 µm in a low-loss wide bandwidth hollow core photonic bandgap fiber
2013
Optics Express
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Through the use of a custom built Thulium doped fiber amplifier with gain bandwidth closely matched to the fiber's low loss window, error-free 8 Gbit/s transmission in an optically amplified data channel ...
The fiber has a record low loss for this wavelength region (4.5 dB/km at 1980 nm) and a >150 nm wide surface-mode-free transmission window at the center of the bandgap. ...
The amplifier is capable of providing a maximum gain of 34 dB for a signal input power of −21.9 dBm and a saturated output power of 22 dBm. ...
doi:10.1364/oe.21.028559
pmid:24514368
fatcat:6j4zvr5z4jfx7f767mwy7qzu7q
Structure for fast photonic medium on application of SDM communication using SiO 2 doped with GeO 2 , and F Materials
2021
IET Nanodielectrics
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For the proposed few-mode fibre (FMF), Fused Silica (SiO 2 ) is considered as a host-material, whereas Germanium Oxide(GeO 2 ) and Fluorine(F)are taken as the dopant for large data transmission. ...
This work presents a new approach for the design of an FMF with a Gaussian core and a trench in the cladding. ...
This dimension of research is getting benefited through three recent fibre techniques such as few-mode fibres (FMFs) [14, [17] [18] [19] [20] [21] [22] , multi-core few-mode fibres (MC-FMF) [15, 16, ...
doi:10.1049/nde2.12009
fatcat:dvx3qx6xqnbjpinp3lipm6tafa
Generation of sub-40 fs pulses at 1.8 μ m by chirp-assisted Raman scattering in hydrogen-filled hollow-core fibre
[article]
2020
arXiv
pre-print
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This is achieved by pressure-tuning the dispersion and avoiding Raman gain suppression by adjusting the chirp of the pump pulses and the proportion of higher order modes launched into the fibre. ...
Here we report generation of sub-40 fs pulses at 1.8 microns, with quantum efficiencies of 50% and without need for post-compression, in hydrogen-filled hollow-core photonic crystal fibre pumped by a commercial ...
Acknowledgments We thank Francesco Tani and Daniel Schade for useful discussions and help with various aspects of the project. This work is financially supported by the Max-Planck-Gesellschaft (MPG). ...
arXiv:2006.16782v1
fatcat:wipyg7j5zrdoffp2xvq4h56hry
Microstructured air-silica fibres: Recent developments in modelling, manufacturing and experiment
[article]
2010
arXiv
pre-print
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A particular attention is given to hollow- core photonic bandgap fibres and their applications. ...
Characteristics measured on fibres manufactured in our laboratory or reported in the literature are analysed. ...
and for providing some of the tested fibres. ...
arXiv:1003.5069v1
fatcat:l4wgdoawxbfj7mqmxqmpdhbd6a
Front Matter: Volume 9634
2015
24th International Conference on Optical Fibre Sensors
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Publication of record for individual papers is online in the SPIE Digital Library. ...
3M
Study of few-mode fiber based SMS sensor for simultaneous measurement of temperature
and strain [9634-67]
x
Proc. of SPIE Vol. 9634 963401-10
9634 3O
Optical fiber sensor for simultaneous measurement ...
for
lasers, amplifiers and sensors [9634-194]
9634 4G
Real-time multi-monitoring interrogation based on Fourier domain mode-locked fiber laser
for measurement of radiation dose and multipoint strain ...
doi:10.1117/12.2214760
fatcat:e5gwpjqmufcrdjy4nqzl7tboja
Dispersion engineering of mode-locked fibre lasers
2018
Journal of Optics
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2018 pre-print arXiv:1803.10556v1 fatcat:e5rtkb36frbqdlpfaqp5wwwjpm
Opportunities for further pulse energy scaling are discussed, in addition to considering other recent advances including automated self-tuning cavities and fluoride-fibre-based mid-infrared mode-locked ...
Mode-locked fibre lasers are important sources of ultrashort pulses, where stable pulse generation is achieved through a balance of periodic amplitude and phase evolutions. ...
Acknowledgments I thank Stuart Jackson, Darren Hudson, Matthew Majewski, Roy Taylor, Edmund Kelleher, Robbie Murray and Tim Runcorn for lively discussions and suggestions on this topic. ...
doi:10.1088/2040-8986/aaa9f5
fatcat:4ikbaqny4zg2pe2seangcotd6m
Survey and Evaluation of Space Division Multiplexing: From Technologies to Optical Networks
2015
IEEE Communications Surveys and Tutorials
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These include pumped-distributed Raman amplifiers for few-modes [65] and long-haul multi-core transmission [66] , fiber bundle Erbium Doped Fiber Amplifier (EDFA) with low crosstalk and uniform gain ...
low crosstalk, DMD, modal dispersion
low modal interference
no MIMO-DSP
SDM
fibers
light MIMO-DSP
high SSE
high SSE
low integration
heavy MIMO-DSP
medium SSE
multi/few mode fiber ...
His work has been accepted for oral presentation in international optical communication conferences like OFC 2015 and ECOC 2015. ...
doi:10.1109/comst.2015.2466458
fatcat:7ax7wppxp5gevglmtz2ix77lwi
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