The quantification of microvascular blood flow velocity is pivotal in elucidating the characteristics of retinal microcirculation, and it plays a vital role in the early detection of numerous ophthalmic pathologies. However, non-i

We propose a Phong shading approximation, which gives the amplitude of each point inside the triangle through linear interpolation within the framework of self-similarity segmentation and affine transformation in polygon-based com

Coherent diffraction imaging (CDI) enables diffraction-limited high-resolution imaging without using high-quality lenses. It will be desirable to combine it with multiple spectral light sources to achieve chemically resolved imagi

In this paper, we propose a method for detecting the center wavelength of ultra-weak chirped fiber Bragg grating (uwCFBG) with a jittery spectrum, based on the solution of the correlation coefficient. We establish a mathematical m

Coherent optics are emerging as promising solutions for future passive optical networks. However, upstream burst-mode coherent detection faces challenges due to the need for fast digital signal processing and its susceptibility to

A laser has been demonstrated to achieve tunable mode-locked operation using a multifunctional long-period fiber grating (LPFG). By introducing an LPFG with a relatively high polarization-dependent loss of up to 21 dB into the las

We propose clad and unclad infrared polycrystalline fibers based on photo- and radiation-resistant single crystals of the AgCl0.25Br0.75-TlCl0.74Br0.26 and AgCl0.25Br0.75-TlBr0.54I0.46 systems, and we demonstrate the widest transm

We have designed a beaconless laser communication terminal based on intensity modulation and direct detection (IM/DD). In this terminal, a compound-axis tracking system composed of a coarse tracking loop based on a large aperture

Whispering gallery mode resonators (WGMRs) are used as excellent optical feedback components of narrow-linewidth fiber lasers, applied from distributed fiber sensing to optical fiber communication. However, WGMRs lead to output of

We report a novel anti-resonant hollow-core fiber (ARF) with a heptagonal core surrounded by connected cladding tubes, which is employed as a laser beam mode shaper. Cladding nodes are formed between each pair of adjacent cladding

In this Letter, a coding aperture design framework is introduced for data sampling of a CUP-VISAR system in laser inertial confinement fusion (ICF) research. It enhances shock wave velocity fringe reconstruction through feature fu

The reflection matrix optical coherence tomography (RM-OCT) method has made significant progress in extending imaging depth within scattering media. However, the current method of measuring the reflection matrix (RM) through unifo

Single-pixel imaging (SPI) is a computational imaging technique that is able to reconstruct high-resolution images using a single-pixel detector. However, most SPI demonstrations have been mainly focused on macroscopic scenes, so

This study investigates the application of miniature quantum references within small-scale optical atomic frequency standards, utilizing a diminutive 87Rb glass cell, dimensions of 6 mm × 6 mm × 6 mm, to establish a quantum freque

This study introduced a differential polarization division multiplexing (DPDM) scheme for all-fiber high-accuracy spectral measurement. Launching two orthogonal linearly polarized light beams into multimode fibers, the DPDM elegan

We propose and demonstrate a performance-enhanced optical quantizer by inverse design. An adjoint shape co-optimization method is used to optimize the boundaries of the optical quantizer, aiming to reduce the insertion loss (IL),

Studies have been conducted of emission characteristics directly related to the mode composition of radiation such as the spatial distribution of radiation and generation spectra of lasers with a radiation aperture of 20 µm and di

In this paper, we proposed and experimentally demonstrated an 8-channel O-band distributed feedback (DFB) laser array with highly uniform 400 GHz spacing and high output power for optical input/output (I/O) technology. The grating

A multistage amplifier system based on high-power end-pumped two-segmented Nd:YVO4 is developed, which realizes the effective beam quality management in high-power lasers. Because of the severe thermal effect caused by high-power

In this paper, we demonstrate the single-fiber and two-wavelength time transfer (SFTWTT) over a 2061 km field fiber loop-back link network with a synchronous wavelength-division and time-division multiplexing access (WD-TDMA). Thi

Coherent interactions between excitons strongly coupled to plasmons are vital for quantum information devices. For practical applications, suppressing the incoherent dissipation pathways in the hybrid system is essential. Here, we

In this study, we investigate the intensity and spectral fluctuations in surface-enhanced Raman scattering (SERS) signals from individual plasmonic nanocavities. Extremely long-duration blinking components lasting up to minutes ar

We propose a fast-printable and function-switchable metamaterial based on laser-induced graphene for terahertz (THz) wave modulation in the reflection mode. The design can modulate the linear polarization of the incoming wave fron

Nonlinear Cherenkov radiation is a phenomenon of light first observed in 1970 that can be manipulated by phase matching conditions. However, under a rotatory symmetry, the nonlinear Cherenkov radiation was still untouched, where t

The whispering gallery resonator (WGR) represents a promising avenue for the miniaturization of optical devices, while cascaded optical parameter oscillator (OPO) processes have not been realized in the WGR, to the best of our kno

The dissipative Kerr soliton (DKS) frequency comb exhibits broad and narrow-linewidth frequency modes, which make it suitable for quantum communication. However, a scalable quantum network based on multiple independent combs is st

Two-photon polymerization lithography is a technique that provides hundreds of nanometer resolution and full geometric freedom. Several X-ray polymer refractive lenses created by this technique were characterized using differentia