Showing papers in "Optics Communications in 2018"

TL;DR: In this article, the authors derived exact expressions for the multipole moments of dynamic sources that resemble in their simplicity their approximate counterparts, and validated their new expressions against analytical results for a spherical source, and then use them to calculate the induced moments for some selected sources with a non-trivial shape.

TL;DR: In this paper, a wide-angle tunable dual-band terahertz (THz) metamaterial absorber based on square graphene patch (SGP) is presented.

TL;DR: In this paper, the authors summarize the current specifications from these 2D materials based mode-locked and Q-switched lasers, including operating wavelength, optical bandwidth, repetition rate and pulse energy.

TL;DR: A deep neural network is used to automatically learn the features of noise-contaminated CGI images and is able to predict low-noise images from new noise- Contamination CGI images.

TL;DR: In this paper, a novel ultra-wideband terahertz absorber by using periodic arrays of graphene disks and ribbons is proposed and analyzed using analytical expressions for the input impedance of the proposed structure.

TL;DR: In this article, a broadband and switchable metamaterial absorber was demonstrated by utilizing the phase transition of VO2, which is a stacked structure composed of VO 2 periodic array, dielectric layer, VO 2 film, Au periodic array and Au reflective layer, respectively.

TL;DR: In this paper, a broadband metamaterial absorber, composed of the periodic graphene pattern on SiO2 dielectric with the double layer graphene films inserted in it and all of them backed by metal plan, is proposed and investigated.

TL;DR: In this paper, an all-optical photonic crystal (PhC)-based biosensor is presented, which is made up of two PhC-based W 1 waveguides which are critically coupled to a PhCbased ring-resonator (RR).

TL;DR: In this paper, the authors proposed an underwater visible light communication system utilizing QAM-DMT and multi-PIN reception to do the MRC receiving, which achieved the highest data rate of 2.175 Gb/s.

TL;DR: In this article, a dual-band Terahertz perfect absorber composed of a metasurface located on top of a flexible polyimide spacer deposited on a silver ground layer is presented.

TL;DR: In this paper, a symmetric and asymmetric plasmonic bandpass filter (BPF) topology based on the metal-insulator-metal (MIM) configuration is proposed.

TL;DR: In this paper, the authors review recent advances in turbulence effects compensation techniques for OAM-based free-space optical (FSO) communication links and discuss the key challenges and perspectives of compensation of turbulence-distorted OAM links.

TL;DR: In this paper, the authors proposed a novel strategy for designing a highly birefringent photonic crystal fiber (PCF) with near zero flattened dispersion properties by applying elliptical air holes in the core area.

TL;DR: In this article, a 2D square lattice Photonic crystal (PhC) structure of dielectric rods embedded in air background is used to construct all-optical OR, AND, XOR, NOR, NAND and XNOR logic gates based on the interference effect.

TL;DR: In this paper, a fiber-optic sensing structure based on miniaturized modal interferometer (MMI) for simultaneous refractive index (RI), strain and temperature measurement is proposed.

TL;DR: In this paper, a photonic crystal fiber (PCF) based terahertz sensor for the detection of cyanide is proposed, which uses symmetrical and asymmetrical core structures inside a suspension type cladding.

TL;DR: In this article, an optical cascaded Fabry-Perot interferometer hydrogen sensor based on vernier effect has been proposed and achieved, which is composed of a segment of large mode area fiber (LMAF) and segment of hollow core fiber (HCF).

TL;DR: In this paper, a high-capacity underwater optical communications using orbital angular momentum (OAM)-based spatial division multiplexing is discussed, where the authors discuss methods to generate and detect blue-green optical data-carrying OAM beams as well as various underwater effects, including attenuation, scattering, current, and thermal gradients.

TL;DR: In this article, a polarization-insensitive five-band terahertz perfect metamaterial absorber composed of two metallic circular rings and a metallic ground film separated by a dielectric layer is presented.

TL;DR: In this paper, the bonding strength between environmental barrier coatings (EBCs) and silicon carbide fiber reinforced silicon carbides (SiC/SiC) was improved by preparing microstructure on SiC and SiC surface with femtosecond laser.

TL;DR: In this article, an ultra-broadband reflective Pancharatnam-Berry metasurface is proposed to generate the vortex beams within 12-18 GHz, where a Ku-band Archimedes spiral antenna is placed at the focal point of the PB meta-surface as a feed source which is used to emit a right-handed circularly polarized wave.

TL;DR: In this article, a newly developed scattering phase function (referred to as SS phase function), which represents the real water types more accurately like the Petzold phase function, is considered for quantification of the channel characteristics along with the effects of absorption and scattering coefficients.

TL;DR: Both simulation results and experimental results show that the proposed reversed indoor positioning system based on visible light communication using genetic algorithm can realize high precision positioning service.

TL;DR: In this paper, a 2-channel orbital angular momentum (OAM) multiplexed free space optical communication (FSO) link using perfect optical vortex (POV) beams is demonstrated.

TL;DR: In this paper, the authors proposed a planar device in infrared (3 - 12 μ m ) that has a high emission range from 5 μ m to 8 μ m while simultaneously serving as a broadband mirror for the rest wavelengths by engineering its thermal emission characteristics.

TL;DR: In this article, an 8-to-3 optical encoder using nonlinear photonic crystal ring resonators is proposed, which combines one optical waveguide with three 4-input port OR gates.

TL;DR: In this article, the power scintillation index, also known as the irradiance flux variance, for the received irradiance is evaluated in weak oceanic turbulence by using the Rytov method.

TL;DR: In this paper, the authors proposed a fiber sensor for simultaneous temperature and strain measurements by using a cascaded-cavity Fabry-Perot (FP) interferometer.

TL;DR: In this paper, an all-optical plasmonic switch based on metal-insulator-metal (MIM) nanoplasmonics waveguide with a Kerr nonlinear ring resonator is introduced and studied.

TL;DR: In this paper, the authors present comprehensive optical studies of recently discovered single photon sources in boron nitride, which appear in form of narrow lines emitting centres, and aim to compactly characterise their basic optical properties, including the demonstration of several novel findings.