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Fibers
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Hollow-Core Photonic Crystal Fibers
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Hollow-Core Photonic Crystal Fibers

A special issue of Fibers (ISSN 2079-6439).

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 23589

Special Issue Editor

Dr. Frédéric Gérôme

E-Mail Website
Guest Editor
GPPMM Group, XLIM Institute, CNRS UMR 7252, University of Limoges, 87060 Limoges, France
Interests: optical fiber; hollow-core PCF; laser source; plasma photonics; nanomaterials; nonlinear effects
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Hollow-core photonic crystal fibers (HCPCFs) are among those rare technology innovations that are equally a topic of active research and an enabler for a large range of disciplines and applications. Since its theoretical prediction in 1995, HCPCF has evolved from an academic curiosity to a recognized photonic component in several industry and technology sectors.   

Twenty-five years later, we can argue that HCPCF has been a platform for fundamental transformation in guided photonics and on the physical mechanisms by which light is confined and guided in dielectric microstructures. Remarkably, the opportunity to fill the hollow-core with a fluid at a micrometer scale and over length has opened a unique route for light–gas interaction. 

Such outstanding features explain why the HCPCF technology is currently addressing large and diverse range of fields, from optical telecommunications, ultrafast optics, and quantum information to laser metrology, to name just a few.

Within this constantly evolving context, this Special Issue of Fibers intends to cover recent advances obtained in the field of HCPCFs from both fundamental and applicative point-of-view. Contributions will include original research papers and reviews for peer-review.

Dr. Frédéric Gérôme
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fibers is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Hollow-core optical fiber
  • Fiber design and fabrication
  • Fiber properties
  • Fiber gas laser
  • Gas photonics
  • Nonlinear effects
  • Optical fiber applications
  • Industrial applications

Published Papers (6 papers)

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Research

11 pages, 5845 KiB  
Article
Phase Dislocations in Hollow Core Waveguides
by Andrey Pryamikov
Fibers 2021, 9(10), 59; https://0-doi-org.brum.beds.ac.uk/10.3390/fib9100059 - 24 Sep 2021
Cited by 2 | Viewed by 1694
Abstract
This paper discusses the basic concepts of phase dislocations and vortex formation in the electric fields of fundamental air core mode of hollow core waveguides with specific types of rotational symmetry of the core-cladding boundary. Analysis of the behavior of the electric field [...] Read more.
This paper discusses the basic concepts of phase dislocations and vortex formation in the electric fields of fundamental air core mode of hollow core waveguides with specific types of rotational symmetry of the core-cladding boundary. Analysis of the behavior of the electric field phase in the transmission bands shows that the mechanism of light localization in the hollow core waveguides with discrete rotational symmetry of the core-cladding boundary cannot be completely described by the ARROW model. For an accurate description of the phase behavior, it is necessary to account for phase jumps of the magnitude of π when passing through the phase dislocations. Full article
(This article belongs to the Special Issue Hollow-Core Photonic Crystal Fibers)
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14 pages, 3637 KiB  
Article
Analytical Formulas for Dispersion and Effective Area in Hollow-Core Tube Lattice Fibers
by Lorenzo Rosa, Federico Melli and Luca Vincetti
Fibers 2021, 9(10), 58; https://0-doi-org.brum.beds.ac.uk/10.3390/fib9100058 - 23 Sep 2021
Cited by 3 | Viewed by 2784
Abstract
In this work, we propose analytical formulas for the estimation of dispersion properties and effective area of the fundamental mode of hollow-core inhibited coupling fibers with a microstructured cladding composed by a ring of dielectric tubes. The formulas are based on a model [...] Read more.
In this work, we propose analytical formulas for the estimation of dispersion properties and effective area of the fundamental mode of hollow-core inhibited coupling fibers with a microstructured cladding composed by a ring of dielectric tubes. The formulas are based on a model which has already been successfully applied to the estimation of confinement loss. The model takes into account the effects of the coupling of the fundamental core mode with the cladding modes in the context of the single-tube approximation. Effective index, group velocity dispersion, and effective area of the fundamental mode are estimated and compared with the results obtained from numerical simulations, by considering ten different fibers. The comparison shows a good accuracy of the proposed formulas, which do not require any tuning of fitting parameters. On the basis of the analysis carried out, a scaling law relating the effective area to the core radius is also given. Finally, the formulas give a good estimation of the same parameters of other Hollow-core inhibited coupling fibers, such as nested, ice-cream, and kagome fibers. Full article
(This article belongs to the Special Issue Hollow-Core Photonic Crystal Fibers)
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9 pages, 2445 KiB  
Article
Mid-Infrared Ultra-Short Pulse Generation in a Gas-Filled Hollow-Core Photonic Crystal Fiber Pumped by Two-Color Pulses
by Coralie Fourcade-Dutin, Olivia Zurita-Miranda, Patrick Mounaix and Damien Bigourd
Fibers 2021, 9(4), 21; https://0-doi-org.brum.beds.ac.uk/10.3390/fib9040021 - 01 Apr 2021
Cited by 4 | Viewed by 2737
Abstract
We show numerically that ultra-short pulses can be generated in the mid-infrared when a gas filled hollow-core fiber is pumped by a fundamental pulse and its second harmonic. The generation process originates from a cascaded nonlinear phenomenon starting from a spectral broadening of [...] Read more.
We show numerically that ultra-short pulses can be generated in the mid-infrared when a gas filled hollow-core fiber is pumped by a fundamental pulse and its second harmonic. The generation process originates from a cascaded nonlinear phenomenon starting from a spectral broadening of the two pulses followed by an induced phase-matched four wave-mixing lying in the mid-infrared combined with a dispersive wave. By selecting this mid-infrared band with a spectral filter, we demonstrate the generation of ultra-short 60 fs pulses at a 3–4 µm band and a pulse duration of 20 fs can be reached with an additional phase compensator. Full article
(This article belongs to the Special Issue Hollow-Core Photonic Crystal Fibers)
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17 pages, 6991 KiB  
Article
Numerical Modeling of a Rectangular Hollow-Core Waveguide for the Detection of Fuel Adulteration in Terahertz Region
by Md. Ahasan Habib, Erick Reyes-Vera, Juan Villegas-Aristizabal and Md. Shamim Anower
Fibers 2020, 8(10), 63; https://0-doi-org.brum.beds.ac.uk/10.3390/fib8100063 - 08 Oct 2020
Cited by 24 | Viewed by 3010
Abstract
A petrol adulteration sensor based on a rectangular shaped hollow-core photonic crystal fiber is proposed and numerically analyzed in the terahertz regime. The performance of the proposed sensor was evaluated when it is employed to characterize different kerosene mixtures. In this research, the [...] Read more.
A petrol adulteration sensor based on a rectangular shaped hollow-core photonic crystal fiber is proposed and numerically analyzed in the terahertz regime. The performance of the proposed sensor was evaluated when it is employed to characterize different kerosene mixtures. In this research, the adulterated fuel sample is filled in the rectangular hollow channel and the electromagnetic signal of the terahertz band is also driven through the same channel. The received signal after the interaction of fuel with the terahertz signal will advise the refractive index of the fuel oil inside the core, which will also bear the information of how much extrinsic component is present in the fuel. The finite element method based simulation shows that the proposed sensor can reach a high relative sensitivity of 89% and presents low confinement losses at 2.8 THz. The reported sensing structure is easily realizable with the conventional manufacturing techniques. Consequently, this proposed fiber may be treated as an essential part of real-life applications of petrol adulteration measurements. Full article
(This article belongs to the Special Issue Hollow-Core Photonic Crystal Fibers)
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9 pages, 3217 KiB  
Article
Loading Dynamics of Cold Atoms into a Hollow-Core Photonic Crystal Fiber
by Yu Wang, Shijie Chai, Mingjie Xin, Wui Seng Leong, Zilong Chen and Shau-Yu Lan
Fibers 2020, 8(5), 28; https://0-doi-org.brum.beds.ac.uk/10.3390/fib8050028 - 01 May 2020
Cited by 3 | Viewed by 4290
Abstract
Cold atoms trapped and guided in hollow-core photonic crystal fibers provide a scalable diffraction-free setting for atom–light interactions for quantum technologies. However, due to the mismatch of the depth and spatial extension of the trapping potential from free space to the fiber, the [...] Read more.
Cold atoms trapped and guided in hollow-core photonic crystal fibers provide a scalable diffraction-free setting for atom–light interactions for quantum technologies. However, due to the mismatch of the depth and spatial extension of the trapping potential from free space to the fiber, the number of cold atoms in the fiber is mainly determined by the loading process from free space to waveguide confinement. Here, we provide a numerical study of the loading dynamics of cold atoms into a hollow-core photonic crystal fiber. We use the Monte Carlo method to simulate the trajectories of an ensemble of cold atoms from free space trapping potential to optical potential inside a hollow-core fiber and calculate the temperature, loading efficiency, and geometry of the ensemble. We also study the noise sources that cause heating and a loss of atoms during the process. Our result could be used to design and optimize the loading process of cold atoms into a hollow-core fiber for cold atom experiments. Full article
(This article belongs to the Special Issue Hollow-Core Photonic Crystal Fibers)
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8 pages, 1864 KiB  
Article
Borosilicate Based Hollow-Core Optical Fibers
by Walter Belardi and Pier John Sazio
Fibers 2019, 7(8), 73; https://0-doi-org.brum.beds.ac.uk/10.3390/fib7080073 - 11 Aug 2019
Cited by 21 | Viewed by 7939
Abstract
We discuss the fabrication of hollow-core optical fibers made of borosilicate glass. We show that, despite the high attenuation of the glass relative to silica, the fiber optical losses can be of the same order of magnitude of those obtained by using ultrapure [...] Read more.
We discuss the fabrication of hollow-core optical fibers made of borosilicate glass. We show that, despite the high attenuation of the glass relative to silica, the fiber optical losses can be of the same order of magnitude of those obtained by using ultrapure silica glass. Short lengths of the fabricated fibers, used in combination with incoherent optical sources, provide single-mode optical guidance in both near and mid-infrared spectral ranges without any additional optical components. Full article
(This article belongs to the Special Issue Hollow-Core Photonic Crystal Fibers)
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