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An innovative data transmission protocol that effectively makes an optical fibre link linear in its behaviour is shown to benefit high-speed, long-distance optical communication operating at high signal powers.
More than half a century after describing interference of discrete states with a continuum, Ugo Fano's work is as relevant as ever. And Fermi beat him to it.
Room-temperature single-photon emission at several wavelengths in the near-infrared, including the telecom window, is realized by organic colour centres chemically implanted on chirality-defined single-walled carbon nanotubes.
The generation and manipulation of cavity solitons in microresonators is creating new opportunities for Kerr combs to aid applications such as optical communications and spectroscopy.
The importance of the Fano resonance concept is recognized across multiple fields of physics. In this Review, Fano resonance is explored in the context of optics, with particular emphasis on dielectric nanostructures and metasurfaces.
Isolated attosecond pulses (IAPs) in the extreme-ultraviolet range are generated by the interaction of half-cycle mid-infrared pulses with gas (Xe, Kr or Ar) and solid media (quartz). The energy of the IAPs is optically tunable over an octave.
By driving a high-Q fibre-based Fabry–Pérot microresonator with periodic, picosecond optical pulses, deterministic generation of stable femtosecond dissipative cavity solitons has been experimentally realized.
Variable micropotentials for light are created by thermo-optic imprinting of a dye–polymer solution within a microcavity. A thermalized photon Bose–Einstein condensate as well as the coupling and eigenstate hybridization of sites are demonstrated.
Counter-propagating solitons are generated in microresonator systems, producing dual-soliton frequency-comb streams with different repetition rates but high relative coherence useful for spectroscopy and laser ranging systems.
A unidirectional photonic wire laser has been developed by integrating reflectors into terahertz quantum cascade lasers. The transverse dimension is much smaller than the lasing wavelength (80 μm). A record wall-plug power efficiency of 1% is achieved.
