Francesco Poletti

University of Southampton

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Document Type

Co-Authors

David J. Richardson

University of Southampton

421

Eric Numkam Fokoua

University of Southampton

187

M. N. Petrovich

Microsoft Research (United Kingdom)

182

J. R. Hayes

University of Southampton

166

Natalie V. Wheeler

University of Southampton

152

Radan Slavı́k

University of Southampton

148

Gregory T. Jasion

University of Southampton

145

Thomas D. Bradley

Eindhoven University of Technology

125

S. R. Sandoghchi

University of Southampton

Ian Davidson

University of Southampton

Cooperative Institutions

University of Southampton

272

Bellingham Technical College

Centre National de la Recherche Scientifique

University of Parma

University College Cork

University College London

Institute of Electrical and Electronics Engineers

Eindhoven University of Technology

Nokia (United States)

Microsoft Research (United Kingdom)

Author Statistics

Papers

Citation

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Research Field

All fiber components for multimode SDM systems

Ian Giles A. Obeysekara Rongsheng Chen D. Giles Francesco Poletti

Fiber based mode converters and mode splitters are important elements in the FMF mux./demux. Long Period Gratings (LPGs) have been investigated and results presented together with a potential technique for real time mode monitoring during manufacture.

Mode (computer interface)

Fiber Bragg Grating

10.1109/phosst.2012.6280802

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Citations (7)

Low Walk-Off Kerr-Shutter Using a Dispersion-Shifted Lead Silicate Holey Fiber

IEEE Photonics Technology Letters (2007)

S. Asimakis Gianluca Meloni J.Y.Y. Leong Francesco Poletti R. C. Moore

We present, for the first time to our knowledge, the use of a dispersion-shifted soft-glass holey fiber (HF) in a Kerr-shutter configuration. Wavelength conversion of 10-Gb/s data pulses is achieved in the C-band using just 2.1 m of a lead-silicate HF with a nonlinear parameter ¿ of 164 W ^-1 · km ^-1 . The low dispersion and the short length of the fiber enable short switching windows to be realized.

10.1109/lpt.2007.900309

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Citations (3)

Impact of Structural Distortions on the Loss Properties of Hollow-Core Photonic Bandgap Fibers

Asia Communications and Photonics Conference 2021 (2013)

Eric Numkam Fokoua David J. Richardson Francesco Poletti

We present a systematic method for designing hollow-core photonic bandgap fiber geometries with arbitrary structural distortions. Fully vectorial finite element simulations on fibres with realistically distorted claddings reveal that while some distortions are detrimental, a rearrangement of the core surround may reduce the loss by a factor as high as 2.4 compared to "ideal" fibers with no penalty on bandwidth.

Photonic bandgap

10.1364/acpc.2013.aw3c.2

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A study on PBGFs for DWDM transmission

K. Mukasa Kazuo Imamura T. Yagi M. N. Petrovich Francesco Poletti

Optical fibers using a Photonic Bandgap confinement as a guidance mechanism, namely PBGFs, have great potentials for not only device applications but also data transmissions. However, dispersion that severely restricts the transmission performances together with fiber non-linearity and/or the dispersion compensations of the PBGFs by Dispersion Compensating Fibers (DCFs) have not been studied fully up until now. We studied about the PBGFs and the DCFs suitable for DWDM transmission from the fundamental points of view and report the results.

Source

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Combined structural and optical modelling tool to optimise design and fabrication of hollow core photonic band gap fibres

Gregory T. Jasion Eric Numkam Fokoua John S. Shrimpton David J. Richardson Francesco Poletti

Two powerful simulation tools are combined to predict geometry and optical properties of Hollow Core Photonic Band Gap fibres from their preform structure and draw parameters. Broad parameter space scans allow identifying structures for optimal optical performance.

Photonic bandgap

10.1109/ecoc.2015.7341704

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Comparison of Mode Properties of 7 and 19 Cells Core Hollow-Core Photonic Crystal Fibers

Rodrigo Amezcua‐Correa Neil G. R. Broderick M. N. Petrovich Francesco Poletti David J. Richardson

We compare the mode properties of fibers with 7 and 19 cells core, the operational bandwidth and loss of the fibers is compared and trade offs between low loss and wide operational bandwidth are presented.

10.1109/ofc.2007.4348592

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Citations (2)

Hollow‐Core Fibers: Low‐Latency WDM Intensity‐Modulation and Direct‐Detection Transmission Over >100 km Distances in a Hollow Core Fiber (Laser Photonics Rev. 15(9)/2021)

Laser & Photonics Review (2021)

Yang Hong Kyle R. H. Bottrill Thomas D. Bradley Hesham Sakr Gregory T. Jasion

The cover illustrates an artistic impression of wavelength-division multiplexed data transmitted over the length of a hollow-core nested antiresonant nodeless fiber. In article number 2100102, Yang Hong and co-workers demonstrate the longest intensity-modulation direct-detection (IM-DD) transmission experiments (>100 km) achieved in a hollow-core fiber. This achievement represents ∼31% latency reduction as well as approximately five times transmission reach extension compared to a standard single-mode fiber. This work offers new insights into the realization of simple, cost-effective, high-capacity, ultra-low-latency IM-DD transmission links with the potential to revolutionize optical networks in the years to come.

Modulation (music)

10.1002/lpor.202170048

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Citations (1)

Development of Mid-IR Fiber Bundle for Thermal Imaging

Andrea Ventura Joris Lousteau Fedia Ben Slimen Nicholas White Francesco Poletti

We present and discuss the fabrication and characterization of a Mid-Infrared (Mid-IR) transparent flexible bundle based on 1200 fibers whose cores consist of a Ge30As13Se32Te25 chalcogenide glass and the cladding of a Fluorinated Ethylene Propylene (FEP). The Mid-IR fiber bundle was manufactured using the stack and draw method. The high index contrast between the glass and the cladding allows for strong field confinement of the well guided modes within the chalcogenide glass core transparent across the Mid-IR. Higher order modes, which could be prone to cross talk, suffered high losses thanks to the high attenuation offered by the polymer cladding. Additionally, the FEP cladding confers the bundle mechanical flexibility. Following a qualitative thermal imaging assessment, we also present and discuss the experimental loss measurements of the fiber bundle and we compare them to values obtained through modelling to conclude on the potential prospect of the manufactured bundle and its possible improvements.

Cladding (metalworking)

Chalcogenide glass

10.5220/0006639502590265

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Inverse design and fabrication tolerances of ultra-flattened dispersion holey fibers

Optics Express (2005)

Francesco Poletti V. Finazzi Tanya M. Monro Neil G. R. Broderick Vincent Tse

We employ a Genetic Algorithm for the dispersion optimization of a range of holey fibers (HF) with a small number of air holes but good confinement loss. We demonstrate that a dispersion of 0 +/- 0.1 ps/nm/km in the wavelength range between 1.5 and 1.6 microm is achievable for HFs with a range of different transversal structures, and discuss some of the trade-offs in terms of dispersion slope, nonlinearity and confinement loss. We then analyze the sensitivity of the total dispersion to small variations from the optimal value of specific structural parameters, and estimate the fabrication accuracy required for the reliable fabrication of such fibers.

10.1364/opex.13.003728

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Citations (226)

Alterazioni Emocoagulative Nel Cancro Della Prostata (Stadio C E D) in Corso Di Trattamento Con Ciproterone Acetato E Orchiectomia

Urologia Journal (1984)

G. Stagni F. Calestani D. Potenzoni P. Cortellini Francesco Poletti

10.1177/039156038405100130

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Citations (0)