Volume 12 Issue 5, May 2018

Volume 12 Issue 5

Insights into modulational instability

Triangular combs of frequencies generated in optical fibres are observed to reappear with or without temporal shift due to broken symmetry of the Fermi–Pasta–Ulam recurrence phenomenon. This behaviour is revealed by a novel non-destructive optical technique that allows full characterization of the optical phase evolution.

See Mussot et al.

Image: Arnaud Mussot, University of Lille. Cover Design: Bethany Vukomanovic.

Comment

  • Comment |

    Innovations in ‘sustainable’ photonics technologies such as free-space optical links and solar-powered equipment provide developing countries with new cost-effective opportunities for deploying future-proof telecommunication networks.

    • Martin P. J. Lavery
    • , Mojtaba Mansour Abadi
    • , Ralf Bauer
    • , Gilberto Brambilla
    • , Ling Cheng
    • , Mitchell A. Cox
    • , Angela Dudley
    • , Andrew D. Ellis
    • , Nicolas K. Fontaine
    • , Anthony E. Kelly
    • , Christoph Marquardt
    • , Selaelo Matlhane
    • , Bienvenu Ndagano
    • , Francesco Petruccione
    • , Radan Slavík
    • , Filippo Romanato
    • , Carmelo Rosales-Guzmán
    • , Filippus S. Roux
    • , Kobus Roux
    • , Jian Wang
    •  & Andrew Forbes

Books & Arts

Research Highlights

News & Views

  • News & Views |

    Exquisitely low-loss optical resonators have thus far remained discrete. Monolithic integration of waveguides with silica resonators that have Q factors >100 million charts a path toward incorporating these devices in photonic circuits.

    • Joyce K. S. Poon
  • News & Views |

    High-order harmonics in the extreme-ultraviolet regime can be produced and a stable waveform-locked attosecond pulse can be formed when quartz is excited by a strong short-pulsed laser, providing a robust path towards attosecond photonics.

    • Shambhu Ghimire
  • News & Views |

    The evolution of modulational instability sidebands in an optical fibre are shown to provide new insights into Fermi–Pasta–Ulam–Tsingou recurrences.

    • Daniele Faccio
    •  & Fabio Biancalana
  • News & Views |

    In the quest for nanoscopy with super-resolution, consensus from the imaging community is that super-resolution is not always needed and that scientists should choose an imaging technique based on their specific application.

    • Rachel Won

Letters

  • Letter |

    By combining a chromatic focusing system with chirped laser pulses, the spatiotemporal distribution of the laser pulse is controlled in the focal region. The focal spot propagates over nearly 100 times its Rayleigh length at any velocity.

    • Dustin H. Froula
    • , David Turnbull
    • , Andrew S. Davies
    • , Terrance J. Kessler
    • , Dan Haberberger
    • , John P. Palastro
    • , Seung-Whan Bahk
    • , Ildar A. Begishev
    • , Robert Boni
    • , Sara Bucht
    • , Joseph Katz
    •  & Jessica L. Shaw
  • Letter |

    A highly nonlinear optical response can be used to time-resolve light-induced phase transitions with few-femtosecond to sub-femtosecond accuracy, paving the way for time-resolving highly correlated many-body dynamics in strongly correlated systems with few-femtosecond accuracy.

    • R. E. F. Silva
    • , Igor V. Blinov
    • , Alexey N. Rubtsov
    • , O. Smirnova
    •  & M. Ivanov

Articles

  • Article |

    The use of a time-gated reflection matrix of a scattering medium, in particular via using singular value decomposition and injecting light into the largest time-gated eigenchannel, can lead to a more than tenfold enhancement in light energy delivery in comparison with ordinary wave diffusion cases.

    • Seungwon Jeong
    • , Ye-Ryoung Lee
    • , Wonjun Choi
    • , Sungsam Kang
    • , Jin Hee Hong
    • , Jin-Sung Park
    • , Yong-Sik Lim
    • , Hong-Gyu Park
    •  & Wonshik Choi
  • Article |

    Based on a modified Mie scattering theory, several pathways to achieve control over the directionality, polarization state and spectral emission that rely on a coherent coupling of an emitting dipole in monolayer MoS2 to optical resonances of a silicon nanowire are reported.

    • Ahmet Fatih Cihan
    • , Alberto G. Curto
    • , Søren Raza
    • , Pieter G. Kik
    •  & Mark L. Brongersma
  • Article |

    Using silicon nitride waveguides processed by plasma-enhanced chemical vapour deposition, full integration of ultrahigh-Q resonators with other photonic devices is now possible, representing a critical advance for future photonic circuits and systems.

    • Ki Youl Yang
    • , Dong Yoon Oh
    • , Seung Hoon Lee
    • , Qi-Fan Yang
    • , Xu Yi
    • , Boqiang Shen
    • , Heming Wang
    •  & Kerry Vahala
  • Article |

    The Fermi–Pasta–Ulam recurrence process—the recovery of the initial state of a nonlinear system after a certain time—is observed for the first time in a low-loss optical fibre by building a multi-channel, vector optical-time-domain reflectometer.

    • Arnaud Mussot
    • , Corentin Naveau
    • , Matteo Conforti
    • , Alexandre Kudlinski
    • , Francois Copie
    • , Pascal Szriftgiser
    •  & Stefano Trillo

Amendments & Corrections