Showing papers in "Optics Communications in 2023"

TL;DR: In this paper , an all-dielectric InSb metasurface (MS) is proposed and investigated in terahertz (THz) regime, which can achieve broadband thermal tunable reflective linear-polarization (LP) conversion.

TL;DR: In this paper , the authors theoretically proposed a highly sensitive terahertz sensor based on a graphene metamaterial absorber in the THz region, and numerical analysis of the proposed sensor is numerically evaluated using the finite element method.

TL;DR: In this paper , a self-made grapefruit optical fiber was polished in a D-shaped and coated with a silver film on the polished surface by silver mirror reaction, and it was spliced with the multimode fiber and finally formed the MMF-MOF-MMF sensing structure.

TL;DR: In this article , a tunable terahertz to mid-IR modulator composed of single-layer graphene-based gratings combined with a Fabry-Perot (FP) cavity is presented.

TL;DR: In this paper , the authors reported the optimization of fiber optic SPR refractive index sensor parameters with the simulation of finite element method (FEM) and artificial neural network (ANN) model.

TL;DR: In this article , an advanced multi-feedback stochastic parallel gradient descent (AMF-SPGD) method was proposed to strengthen the wavefront aberration correction performance.

TL;DR: In this article , a gradually hot-pressure plastic optical fiber (POF) refractive index (RI) sensor with a flatted structure to detect the glucose concentration, and experimentally investigates the performance of RI sensor with straight and micro-bending POFs.

TL;DR: In this paper , the authors proposed an ultra-wideband (UWB) metamaterial absorber based on dual-square ring (DSR) microstructures from the visible to the far-infrared region.

TL;DR: In this paper , a preprocessing method based on deep learning is proposed to suppress zero-order image of off-axis digital holograms, which is the main source of noise in the hologram acquisition process.

TL;DR: In this paper , the authors used four parallel optical reservoirs to precisely predict the complex chaotic dynamics of the four polarization components output by a driving QD spin-VCSEL, respectively.

TL;DR: In this paper , a dual-fiber Bragg grating acceleration sensor based on a double-arched beam was proposed for low-frequency vibration monitoring in large structures, where the difference in a wavelength shift of the two fiber gratings was used as the output signal of the accelerometer to realize the measurement of acceleration and temperature compensation in the low frequency band.

TL;DR: In this article , a broadband and high-efficient reflective linear-circular polarization convertor (LCPC) based on three-dimensional (3D) all-metal anisotropic metamaterial (AMM) in terahertz (THz) region is proposed.

TL;DR: In this article , the performance of a dual-hop (DH) system model utilizing high-altitude platform station (HAPS) as a relay station with FSO communication for SAGIN scenario, which is expected to be featured in 6G communication.

TL;DR: In this article , an ultra-sensitive tunable terahertz (THz) sensor that comprises monolayer graphene-based gratings integrated with a Fabry-Perot (FP) cavity through precisely numerical modeling is presented.

TL;DR: In this article , the Hartley structure image-reject mixing (IRM) was introduced to compensate the amplitude and phase imbalance of the IQ channel, resulting in a high image rejection ratio up to around ∼50 dB for all channels.

TL;DR: In this paper , the row entropy of active speckle pattern is used to quantify the quality of the projection speckLE pattern suitable for underwater stereo vision, and the relevant experiment and analysis are carried out to prove the correctness and effectiveness of new parameters.

TL;DR: Wang et al. as mentioned in this paper proposed a novel optical asymmetric fingerprint image encryption technique that uses QR decomposition in gyrator wavelet transform domain to enhance the level of security.

TL;DR: In this paper , the authors verify the stability of the tri-directional fiber transmission system with different wavelengths and distances, and show that power penalty can be improved within a range of 2-3 dB if a bandpass filter (BPF) is inserted before the measurement equipment.

TL;DR: In this paper , a high-quality comprehensive vertical Lead Sulfide (PbS) nanoflakes were synthesized by the physical vapor deposition (PVD), and a home-build handy dry-transfer system was used to simplify the fabrication process of PbS-SAs.

TL;DR: In this article , a switchable 3-bit coding metasurface based on Dirac semimetals (DSMs) is proposed, and its unit cell is composed of a DSM microstructure layer, a dielectric layer, and a gold bottom layer.

TL;DR: In this paper , an extended ptychographic iterative engine (ePIE) was used to simultaneously detect piston, tip-tilt, and decenter errors of sub-mirrors.

TL;DR: In this article , a virtual reference cell instead of a real one in the measurement system, with a variable cavity length adapting to the measurement range, is introduced to overcome the optical path difference between the sensing and reference cells, which will cause a significant decrease in the sensitivity.

TL;DR: In this article , the authors proposed an architecture optimized indium-tinoxide (ITO)/vanadium dioxide (VO2) hybrid metamaterial with optically transparent and tunable broadband terahertz properties.

TL;DR: In this paper , a highly sensitive gas sensor based on light-induced thermoelastic spectroscopy (LITES) with the first harmonic phase angle(1f-PA) wavelength modulation technique is reported.

TL;DR: In this paper , the authors proposed a novel OOK modulation scheme using peak detection technique, which is quite common in medical imaging, and validate the effectiveness of the proposed scheme through simulation and lab experiments.

TL;DR: In this article , the authors numerically investigated the possibilities of using dispersion-compensating fiber (DCF) instead of inverse-dispersion fiber (IDF) for construction of the link.

TL;DR: In this paper , a variable-period curved grating was proposed to reduce the thickness of the waveguide waveguide system, which can achieve an average efficiency of over 70% with a diagonal field of view of 36.6°.

TL;DR: Wang et al. as discussed by the authors proposed a spherical crown holographic display method based on planar spatial light modulators (SLM), which can expand the viewing angle and information capacity of spherical holographic displays.

TL;DR: In this article , a high performance Violet-light phototransistor with memory function was fabricated using CsPbBr3 nanocrystals as light absorption material, graphene as fast charge transfer channel, and graphene oxide as charge storage medium.

TL;DR: In this article , a photonic approach for distance measurement that utilizes broadband optical carrier-based microwave signal is proposed, where phase extraction is achieved based on all-phase fast Fourier transform (apFFT) for derivation of the distance.