TY - GEN

T1 - High-efficiency in-fiber nonlinear conversion of nanosecond optical pulses into structured packets of high-peak-power ultrashort pulses

AU - Korel, Igor I.

AU - Nyushkov, Boris N.

AU - Kutishcheva, Anastasia Yu

AU - Kobtsev, Sergey M.

N1 - Funding Information: The work of I.I.K., B.N.N., and A.Yu.K. was supported by the Ministry of Science and Higher Education of the Russian Federation (FSUN-2020-0007); the work of S.M.K. was supported by the Ministry of Science and Higher Education of the Russian Federation (FSUS-2020-0036) and by the Russian Foundation for Basic Research (project #18-29-20025). Publisher Copyright: © 2021 COPYRIGHT SPIE.

PY - 2021

Y1 - 2021

N2 - We present an energy-efficient method for conversion of relatively long (nanosecond) optical pulses into an extraordinary light structure-a packet of ordered picosecond pulses which differs from the known types of ordered ultrashort pulse patterns (like soliton molecules). The method relies on revealed peculiarities of nonlinear evolution of an ultrashort dark pulse implanted in a nanosecond bright pulse when they propagate in an optical fiber. Under certain conditions, energy of the background nanosecond pulse, which initially contains a single ultrashort dark pulse, can be mostly converted into a structured burst of ultrashort bright pulses. This burst can feature relatively high (manifold of the initial value) peak power and ultrahigh (sub-THz) intraburst pulse repetition. This dark pulse evolution develops at prorogation distances of a few tens of nonlinear lengths in telecom fibers under conditions of anomalous dispersion. Thus, it can be considered on the one hand as an important limitation for fiber transmission of particular optical waveforms, and on the other hand as a promising method for ultrashort pulse bursts generation.

AB - We present an energy-efficient method for conversion of relatively long (nanosecond) optical pulses into an extraordinary light structure-a packet of ordered picosecond pulses which differs from the known types of ordered ultrashort pulse patterns (like soliton molecules). The method relies on revealed peculiarities of nonlinear evolution of an ultrashort dark pulse implanted in a nanosecond bright pulse when they propagate in an optical fiber. Under certain conditions, energy of the background nanosecond pulse, which initially contains a single ultrashort dark pulse, can be mostly converted into a structured burst of ultrashort bright pulses. This burst can feature relatively high (manifold of the initial value) peak power and ultrahigh (sub-THz) intraburst pulse repetition. This dark pulse evolution develops at prorogation distances of a few tens of nonlinear lengths in telecom fibers under conditions of anomalous dispersion. Thus, it can be considered on the one hand as an important limitation for fiber transmission of particular optical waveforms, and on the other hand as a promising method for ultrashort pulse bursts generation.

KW - Dark pulse

KW - Nanosecond pulses

KW - Nonlinear evolution

KW - Optical fiber

KW - Ultrashort pulses

UR - http://www.scopus.com/inward/record.url?scp=85121658879&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/1a8669c3-8e2a-3dca-92a0-560127abc5a8/

U2 - 10.1117/12.2601237

DO - 10.1117/12.2601237

M3 - Conference contribution

AN - SCOPUS:85121658879

SN - 9781510646599

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Quantum and Nonlinear Optics VIII

A2 - He, Qiongyi

A2 - Kim, Dai-Sik

A2 - Li, Chuan-Feng

PB - SPIE

T2 - Quantum and Nonlinear Optics VIII 2021

Y2 - 10 October 2021 through 12 October 2021

ER -