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Journal Article•DOI•

Toward Self-Similar Propagation of Optical Pulses in a Dispersion Tailored, Nonlinear, and Segmented Bragg-Fiber at 2.8 $\mu$m

Piyali Biswas1, Bishnu P. Pal2, Abhijit Biswas1, Somnath Ghosh3 •
University of Calcutta1, Bennett University2, Indian Institute of Technology, Jodhpur3
01 Aug 2017-IEEE Photonics Journal (Institute of Electrical and Electronics Engineers (IEEE))-Vol. 9, Iss: 4, pp 1-12

TL;DR: In this paper, the authors demonstrate self-similar stable propagation of parabolic optical pulses through a highly nonlinear specialty Bragg fiber at 2.8€$ m by a numerical approach.

Abstract: We demonstrate self-similar stable propagation of parabolic optical pulses through a highly nonlinear specialty Bragg fiber at 2.8  $\mu$ m by a numerical approach. To obtain such propagation characteristics over a longer length of a Bragg fiber, we propose and verify a fiber design scheme that underpins passive introduction of a rapidly varying group-velocity dispersion around its zero dispersion wavelength and modulated nonlinear profile through suitable variation in its diameter. To implement the proposed scheme, we design a segmented and tapered chalcogenide Bragg fiber in which a Gaussian pulse is fed. Transformation of such a launched pulse to a self-similar parabolic pulse with full-width-at-half-maxima of 4.12 ps and energy of $\sim$ 39 pJ is obtained at the output. Furthermore, a linear chirp spanning across the entire pulse duration and 3 dB spectral broadening of about 38 nm at the output are reported. In principle, the proposed scheme could be implemented in any chosen set of materials.

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Citations
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Proceedings Article•DOI•
Application-specific Specialty Optical Fibers: A new Paradigm in Fiber Designs

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Bishnu P. Pal1, Somnath Ghosh2, Ajanta Barh, Ravi K. Varshney3•
École Centrale Paris1, Indian Institute of Technology, Jodhpur2, Indian Institute of Technology Delhi3
01 Mar 2019
TL;DR: In this paper, the authors reviewed some application-specific fiber designs for parabolic pulse generation to overcome nonlinear detriments, and all-fiber light sources for mid-IR and THz photonics.
Abstract: Specialty optical fiber for specific applications have become a new paradigm in guided wave photonics. In this invited presentation, we would review some of our application-specific specialty fiber designs for parabolic pulse generation to overcome nonlinear detriments, and all-fiber light sources for mid-IR and THz photonics.

Cites background from "Toward Self-Similar Propagation of ..."

  • ...Details of our work in this direction can be found in [3]....

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References
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Book•
Nonlinear Fiber Optics

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Govind P. Agrawal1•
Elsevier1
01 Jan 1989
TL;DR: The field of nonlinear fiber optics has advanced enough that a whole book was devoted to it as discussed by the authors, which has been translated into Chinese, Japanese, and Russian languages, attesting to the worldwide activity in the field.
Abstract: Nonlinear fiber optics concerns with the nonlinear optical phenomena occurring inside optical fibers. Although the field ofnonlinear optics traces its beginning to 1961, when a ruby laser was first used to generate the second-harmonic radiation inside a crystal [1], the use ofoptical fibers as a nonlinear medium became feasible only after 1970 when fiber losses were reduced to below 20 dB/km [2]. Stimulated Raman and Brillouin scatterings in single-mode fibers were studied as early as 1972 [3] and were soon followed by the study of other nonlinear effects such as self- and crossphase modulation and four-wave mixing [4]. By 1989, the field ofnonlinear fiber optics has advanced enough that a whole book was devoted to it [5]. This book or its second edition has been translated into Chinese, Japanese, and Russian languages, attesting to the worldwide activity in the field of nonlinear fiber optics.

15,319 citations

Journal Article•DOI•
Towards high-power mid-infrared emission from a fibre laser

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Stuart D. Jackson1•
University of Sydney1
01 Jul 2012-Nature Photonics
TL;DR: In this article, a review summarizes the different rare-earth cations and host materials used in mid-infrared fiber laser technology, and discusses the future applications and challenges for the field.
Abstract: Fibre lasers in the mid-infrared regime are useful for a diverse range of fields, including chemical and biomedical sensing, military applications and materials processing. This Review summarizes the different rare-earth cations and host materials used in mid-infrared fibre laser technology, and discusses the future applications and challenges for the field.

826 citations

Journal Article•DOI•
Self-similar evolution of parabolic pulses in a laser.

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Fatih Omer Ilday1, J.R. Buckley1, W. G. Clark, Frank W. Wise1•
Cornell University1
27 May 2004-Physical Review Letters
TL;DR: Self-similar propagation of ultrashort, parabolic pulses in a laser resonator is observed theoretically and experimentally, constituting a new type of pulse shaping in mode-locked lasers.
Abstract: Self-similar propagation of ultrashort, parabolic pulses in a laser resonator is observed theoretically and experimentally. This constitutes a new type of pulse shaping in mode-locked lasers: in contrast to the well-known static (solitonlike) and breathing (dispersion-managed soliton) pulse evolutions, asymptotic solutions to the nonlinear wave equation that governs pulse propagation in most of the laser cavity are observed. Stable self-similar pulses exist with energies much greater than can be tolerated in solitonlike pulse shaping, and this has implications for practical lasers.

781 citations

Journal Article•DOI•
Mid-infrared supercontinuum covering the 1.4–13.3 μm molecular fingerprint region using ultra-high NA chalcogenide step-index fibre

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Christian Rosenberg Petersen1, Uffe Møller1, Irnis Kubat1, Binbin Zhou1, Sune Dupont2, Jacob Ramsay2, Trevor M. Benson3, Slawomir Sujecki3, Nabil Abdel-Moneim3, Zhuoqi Tang3, David Furniss3, Angela B. Seddon3, Ole Bang1 •
Technical University of Denmark1, Aarhus University2, University of Nottingham3
01 Nov 2014-Nature Photonics
TL;DR: In this article, a record-breaking spectral coverage of 1.4-13.3 µm was achieved by launching intense ultra-short pulses into short pieces of ultra-high numerical aperture step-index chalcogenide glass optical fiber consisting of a GaAsSe cladding and an As2Se3 core.
Abstract: Mid-infrared supercontinuum generation with a record-breaking spectral coverage of 1.4–13.3 µm is demonstrated by launching intense ultra-short pulses into short pieces of ultra-high numerical aperture step-index chalcogenide glass optical fibre consisting of a GaAsSe cladding and an As2Se3 core.

696 citations

"Toward Self-Similar Propagation of ..." refers background in this paper

  • ...In this context, mid-IR laser sources delivering femtosecond pulses with energy in the order of nano-Joules [27], mid-IR supercontinuum sources spanning over wide ranges of wavelength with much higher peak power [44]–[46], etc....

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Journal Article•DOI•
Self-similar propagation and amplification of parabolic pulses in optical fibers.

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Martin E. Fermann, Vladimir Kruglov1, B.C. Thomsen1, John M. Dudley1, John D. Harvey1 •
University of Auckland1
26 Jun 2000-Physical Review Letters
TL;DR: Self-similarity analysis of the nonlinear Schrödinger equation with gain results in an exact asymptotic solution corresponding to a linearly chirped parabolic pulse which propagates self-similarly subject to simple scaling rules.
Abstract: Ultrashort pulse propagation in high gain optical fiber amplifiers with normal dispersion is studied by self-similarity analysis of the nonlinear Schrodinger equation with gain. An exact asymptotic solution is found, corresponding to a linearly chirped parabolic pulse which propagates self-similarly subject to simple scaling rules. The solution has been confirmed by numerical simulations and experiments studying propagation in a Yb-doped fiber amplifier. Additional experiments show that the pulses remain parabolic after propagation through standard single mode fiber with normal dispersion.

686 citations

"Toward Self-Similar Propagation of ..." refers background in this paper

  • ...To date, several studies have been reported in the literature on the formation of PPs, in both active and passive fibers [14]–[21]....

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