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Fibers
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Fiber Laser Sources II
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Fiber Laser Sources II

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

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 9143

Special Issue Editor

Dr. Elena Anashkina

E-Mail Website
Guest Editor
Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia
Interests: fiber lasers and amplifiers; special mid-ir nonlinear fibers; ultrafast fiber metrology; fiber-based microresonators
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fiber lasers and amplifiers are increasingly becoming the optical source of choice for a large range of scientific and industrial applications, thanks to their inherent technological advantages and great possibilities of controlling properties of light. Great attention is devoted to the design and development of special fibers, which allow operation in specific spectral ranges, including the mid-IR range. The purpose of this Special Issue is to present state-of-the-art research in the area of fiber lasers and amplifiers through a collection of original research, as well as review papers, ranging from fundamental physics to applications.

The scope of this Special Issue covers all aspects of theoretical, numerical, and experimental studies of fiber lasers and amplifiers, including, but not limited to, the following:

  • Fiber lasers;
  • Fiber amplifiers;
  • Raman fiber lasers;
  • Brillouin fiber lasers
  • Distributed feedback fiber lasers;
  • Tunable and multiwavelength lasers;
  • Fiber design and fabrication;
  • Multicore fibers;
  • Laser architectures and pumping methods;
  • Nonlinear dynamics of fiber lasers;
  • Ultrafast fiber sources;
  • Fiber frequency comb sources;
  • Fiber supercontinuum sources;
  • Photonic crystal fibers;
  • Fiber laser pumped frequency conversion schemes;
  • Mid-IR fiber lasers;
  • Chalcogenide fibers;
  • Tellurite fibers;
  • Fluoride fibers;
  • Advances in fiber laser characterization methodologies;
  • Applications including telecommunications, sensing, generation of non-classical states of light, and others.

Dr. Elena Anashkina
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

  • fiber lasers
  • fiber amplifiers
  • raman fiber lasers
  • brillouin fiber lasers Distributed feedback fiber lasers
  • tunable and multiwavelength lasers
  • fiber design and fabrication
  • multicore fibers
  • laser architectures and pumping methods
  • nonlinear dynamics of fiber lasers
  • ultrafast fiber sources
  • fiber frequency comb sources
  • fiber supercontinuum sources
  • photonic crystal fibers
  • fiber laser pumped frequency conversion schemes
  • mid-IR fiber lasers
  • chalcogenide fibers
  • tellurite fibers
  • fluoride fibers
  • advances in fiber laser characterization methodologies
  • applications including telecommunications, sensing, generation of non-classical states of light, and others

Published Papers (5 papers)

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Research

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10 pages, 2453 KiB  
Article
Visible to Mid-IR Supercontinuum Generation in Cascaded PCF-Germanate Fiber Using Femtosecond Yb-Fiber Pump
by Maksim Yu. Koptev, Alexander E. Zaprialov, Alexey F. Kosolapov, Alexander N. Denisov, Maria S. Muravyeva, Sergey L. Semjonov, Sergey V. Muravyev and Arkady V. Kim
Fibers 2023, 11(9), 72; https://doi.org/10.3390/fib11090072 - 24 Aug 2023
Viewed by 1251
Abstract
Broadband supercontinuum (SC) fiber sources covering the mid-IR range have many significant applications, largely due to their compactness, reliability, and ease of use. However, most of the existing SC fiber sources cannot boast of either high reliability or a wide bandwidth. Thus, supercontinuum [...] Read more.
Broadband supercontinuum (SC) fiber sources covering the mid-IR range have many significant applications, largely due to their compactness, reliability, and ease of use. However, most of the existing SC fiber sources cannot boast of either high reliability or a wide bandwidth. Thus, supercontinuum sources based on silica fibers are robust, but are not capable of generating SC in the mid-IR range. Sources based on soft glasses (tellurite, chalcogenide, etc.) generate broadband SC in the mid-IR range but are not used commercially, due to the poor mechanical and chemical characteristics of such fibers. In this work, we propose a new approach consisting of cascade generation of a supercontinuum sequentially in a silica photonic crystal fiber (PCF) and a germanate fiber. Using a standard ytterbium chirped-pulse amplification (CPA) laser system for pumping, we have demonstrated a supercontinuum in the range of 450–2950 nm in PCF and germanate fiber firmly connected by a standard fusion splicing technique. Further optimization of the cascade pump will make it possible to create a compact and reliable all-fiber SC source from the visible to mid-IR range. Full article
(This article belongs to the Special Issue Fiber Laser Sources II)
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14 pages, 4090 KiB  
Article
Recent Achievements in Development of Chalcogenide Optical Fibers for Mid-IR Sensing
by Vladimir S. Shiryaev, Alexander P. Velmuzhov, Tatiana V. Kotereva, Elizaveta A. Tyurina, Maksim V. Sukhanov and Ella V. Karaksina
Fibers 2023, 11(6), 54; https://doi.org/10.3390/fib11060054 - 16 Jun 2023
Cited by 2 | Viewed by 1246
Abstract
Recent results of research of passive and active optical waveguides made of high-purity chalcogenide glasses for middle infrared fiberoptic evanescent wave spectroscopy of liquid and gaseous substances are presented. On the basis of selenide and telluride glass fibers, novel types of highly sensitive [...] Read more.
Recent results of research of passive and active optical waveguides made of high-purity chalcogenide glasses for middle infrared fiberoptic evanescent wave spectroscopy of liquid and gaseous substances are presented. On the basis of selenide and telluride glass fibers, novel types of highly sensitive fiber probes are developed. On the basis of Pr(3+)- and Tb(3+)-doped Ga(In)-Ge-As-Se and Ga-Ge-Sb-Se glass fibers, the 4.2–6 μm wavelength radiation sources are created for all-fiber sensor systems. Successful testing of chalcogenide glass fiber sensors for the analysis of some liquid and gaseous mixtures was carried out. Full article
(This article belongs to the Special Issue Fiber Laser Sources II)
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8 pages, 1870 KiB  
Article
Ultrashort Pulse Retrieval from Experimental Spectra Transformed in Chalcogenide and Silica Fibers
by Elena A. Anashkina, Arseny A. Sorokin and Alexey V. Andrianov
Fibers 2022, 10(11), 98; https://doi.org/10.3390/fib10110098 - 11 Nov 2022
Cited by 2 | Viewed by 1307
Abstract
The characterization of ultrashort optical pulses is a highly requested task. The most popular commercially available hardware/software systems are based on interferometric measurements and second-harmonic generation, leading to some ambiguities and limitations. Here we experimentally test the non-interferometric method of pulse retrieval from [...] Read more.
The characterization of ultrashort optical pulses is a highly requested task. The most popular commercially available hardware/software systems are based on interferometric measurements and second-harmonic generation, leading to some ambiguities and limitations. Here we experimentally test the non-interferometric method of pulse retrieval from three spectra: the fundamental spectrum and two spectra that transformed in an element with Kerr nonlinearity and accumulated different nonlinear phases (different Β-integrals). This method has no ambiguities related to time direction, and allows simple hardware/software implementation. We test a novel simple algorithm for experimental data processing based on the search for a polynomial-approximated spectral phase. Two experimental cases are considered. In the first one, we retrieved 160 fs pulses using a chalcogenide arsenic sulfide glass fiber as a nonlinear Kerr element. In the second case, we retrieved 670 fs pulses with a complex spectrum using a piece of silica-based fiber. The results are confirmed by independent measurements using a standard SHG-FROG technique (Second-Harmonic Generation Frequency-Resolved Optical Gating). Full article
(This article belongs to the Special Issue Fiber Laser Sources II)
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13 pages, 2726 KiB  
Article
Wavelength Sensing Based on Whispering Gallery Mode Mapping
by Roberts Berkis, Pauls Kristaps Reinis, Lase Milgrave, Kristians Draguns, Toms Salgals, Inga Brice, Janis Alnis and Aigars Atvars
Fibers 2022, 10(10), 90; https://doi.org/10.3390/fib10100090 - 19 Oct 2022
Cited by 1 | Viewed by 1839
Abstract
We demonstrate a wavelength sensor based on whispering gallery mode (WGM) resonators. For the first time, multiple polymethyl methacrylate (PMMA) microspheres were simultaneously attached to a tapered fiber. WGM resonances from these commercially available PMMA microspheres were observed with a NIR camera, monitoring [...] Read more.
We demonstrate a wavelength sensor based on whispering gallery mode (WGM) resonators. For the first time, multiple polymethyl methacrylate (PMMA) microspheres were simultaneously attached to a tapered fiber. WGM resonances from these commercially available PMMA microspheres were observed with a NIR camera, monitoring the scattered light. Circulating light in the WGMs was scattered on the outer layer of the microspheres and appeared as bright spots due to scattering defects. For each laser wavelength fed into the tapered fiber, the light interfered differently for the various sizes of PMMA microspheres. We measured scattered light intensity for different wavelengths and created a barcode for each microsphere. Combining these barcodes into a mode map allowed for unknown wavelength detection. A tunable laser around 1550 nm was used for measurements. As a result, a laser wavelength sensor system with a detection limit of 5 pm was demonstrated. The principles of increasing selectivity, as well as creating a compact device, were discussed. Full article
(This article belongs to the Special Issue Fiber Laser Sources II)
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Review

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45 pages, 10192 KiB  
Review
Analysis of the Passive Stabilization Methods of Optical Frequency Comb in Ultrashort-Pulse Erbium-Doped Fiber Lasers
by Stanislav G. Sazonkin, Ilya O. Orekhov, Dmitriy A. Dvoretskiy, Uliana S. Lazdovskaia, Almikdad Ismaeel, Lev K. Denisov and Valeriy E. Karasik
Fibers 2022, 10(10), 88; https://doi.org/10.3390/fib10100088 - 14 Oct 2022
Cited by 3 | Viewed by 2659
Abstract
In this review paper, we describe the current state of the art to stabilize the output radiation of ultrashort-pulse (USP) fiber lasers and analyze passive methods to reduce the magnitude of fluctuations in the amplitude–frequency noise of output radiation. Regarding main noise characterization [...] Read more.
In this review paper, we describe the current state of the art to stabilize the output radiation of ultrashort-pulse (USP) fiber lasers and analyze passive methods to reduce the magnitude of fluctuations in the amplitude–frequency noise of output radiation. Regarding main noise characterization in mode-locked fiber lasers, we further consider the influence on laser operation of primary generation regimes starting up in cavities, such as solitons, stretched pulses, similaritons, and dissipative solitons. Then, we proceed to analyze the external and internal factors that affect the stability of the output radiation characteristics depending on the mode-locking mechanism and the resonator scheme. Full article
(This article belongs to the Special Issue Fiber Laser Sources II)
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