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Enhanced wide-angle third-harmonic generation in flat-band-engineered quasi-BIC metagratings
Nonlinear metasurfaces and photonic crystals provide a significant way to generate and manipulate nonlinear signals owing to the resonance- and...
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Multi-peak solitons in PT-symmetric Bessel optical lattices with defects
This paper presents a theoretical analysis of the existence and stability of multi-peak solitons in parity–time-symmetric Bessel optical lattices...
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Transmission, reflection, scattering, and trap** of traveling discrete solitons by \(\mathcal{C}\) and \(\mathcal{V}\) point defects
We study the interactions of moving discrete solitons in waveguide arrays with two types of point defects that are constructed by varying either the...
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Propagation of optical vortex beams and nucleation of vortex-antivortex pairs in disordered nonlinear photonic lattices
The propagation of optical vortex beams through disordered nonlinear photonic lattices is numerically studied. The vortex beams are generated by...
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Exact solutions for bright and dark solitons in spatially inhomogeneous nonlinearity
We present exact analytical results for bright and dark solitons in a type of one-dimensional spatially inhomogeneous nonlinearity. We show that the...
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All-optical signal-conversion efficiency with a parameter-dependent four-wave-mixing process in a silicon nanowaveguide
We report on experimental measurements of the signal-wavelength conversion efficiency through the four-wave-mixing (FWM) process in a silicon strip...
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Gaussian beam diffraction in inhomogeneous and logarithmically saturable nonlinear media
The method of paraxial complex geometrical optics (PCGO) is presented, which describes Gaussian beam (GB) diffraction and self-focusing in smoothly...
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Soliton-induced supercontinuum generation in liquid-filled photonic crystal fibre
We aim to study the nonlinear optical phenomena with ultra-broadband radiation in photonic crystal fibre (PCF). While PCFs with cores made from...
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Modulation instability in lossy silicon optical waveguide
Taking into account the small linear loss of silicon-on-insulator(SOI) waveguide, conditions and gain spectra of modulation instability(MI) induced...
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Switching dynamics of a two-dimensional nonlinear couplers in a photopolymer — A variational approach
We study the optical switching of the two-dimensional nonlinear coupler in a doped photopolymer. The coupled nonlinear Schrödinger equations (CNLSEs)...
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Switching behaviour of a nonlinear Mach-Zehnder interferometer
In the present paper, a detailed investigation on the switching behaviour of a nonlinear Mach-Zehnder interferometer (NMZI) has been carried out...
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Bound states in photonic Fabry-Perot resonator comprised of two nonlinear off-channel defects
Two off-channel nonlinear defects coupled to the photonic waveguide constitute the Fabry-Perot interferometer (FPR). The defects are made from a...
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Spectral broadening of femtosecond pulses in an nonlinear optical fiber amplifier
A promising method for the generation of a supercontinuum with a high spectral power density based on the spectral broadening of ultrashort pulses in...
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Fiber supercontinuum generators with an extended set of controlled parameters in real time scale
Different methods for controlling the radiation parameters of supercontinuum (SC) are analyzed. In particular, the possibility of varying the SC...
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On the pre-amplified linear cavity multi-wavelength Brillioun-erbium fiber laser with low SBS threshold highly nonlinear photonic crystal fiber
An efficient multi-wavelength Brillouin-erbium fiber laser utilizing low stimulated Brillouin scattering threshold highly nonlinear photonic crystal...
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On the focusing limit of high-power femtosecond laser pulse propagation in air
Focused propagation of high-power femtosecond laser radiation in air is considered. Based on numerical solution of the nonlinear Schrödinger equation...
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Ultrafast optical switching of an ionized medium by interfering ultrashort laser pulses
Multibeam ionization of gas and condensed-phase media with interfering ultrashort laser pulses can help to substantially increase the maximum field...
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Radiation reflection from inhomogeneities moving in a medium with a plasma dispersion law
The dependence of the complex frequency of radiation reflected from an inhomogeneity moving in a medium on the frequency of the incident radiation is...
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Gap solitons in defocusing lithium niobate binary waveguide arrays fabricated by proton implantation and selective light illumination
Photovoltaic photorefractive binary waveguide arrays are fabricated by proton implantation and selective light illumination on top of an iron-doped...
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PPLN-based all-optical 40 Gbit/s ODB/AMI/FSK wavelength conversion and FSK logic NOT gate
We propose and demonstrate all-optical wavelength conversion for optical duobinary (ODB), alternate-mark inversion (AMI), and frequency-shift keying...