Multilayer coated gratings have excellent diffraction performance and can be an important dispersion optical element in synchrotron radiation soft X-ray band. In order to measure the diffraction efficiency of multilayer coated gra
Slave optical transceiver control technology in a laser communication network was assessed to improve the efficiency of space laser communication and realize a space laser communication network. First, the principle of a "one-to-f
Optical interconnects have advantages of low power consumption and large bandwidth and can achieve a substantial increase in the number of nodes and switching capability for data centers. An arrayed waveguide grating router (AWGR)
Under low-cost intensity modulation with direct detection (IM-DD) optical inter-connection scenarios, we demonstrate high-speed mode division multiplexing (MDM) transmission experiment over 1000 m length few-mode fiber (FMF) using
Because of the difficulty in locating error bits in polarization code decoding caused by atmospheric turbulence in free-space optical communication, this paper proposes an LSTM-SCFlips decoding method in free-space optical communi
To tackle the uneven settlement monitoring problem of building structures, we design a new static level with double fiber Bragg gratings based on equal strength beams. According to the basic theory of the communicating vessel prin
The division-of-focal-plane polarization imaging system has a compact structure, small size, and high real-time performance, and simultaneously can achieve light intensity response of multiple polarization directions in single ima
Regarding difficult quantitative analysis, low automation, and intermediate link transformation in reverse design based on industrial computerized tomography (CT) images, this paper proposes a method for direct conversion of indus
In this paper, the uncertainty of convex lens focal length measured based on the Gauss formula method (real object-real image method) is analyzed comprehensively considering the factors of the depth of field, thickness, and spheri
Phase shifting profilometry (PSP) based on crossed grating projection can acquire two orthogonal phases by a phase shifting algorithm in a specific direction (the phase shifting direction is usually controlled by a phase shifting
The semiconductor laser was used to achieve the transmission welding of polycarbonate (PC) parts. The influences of two kinds of laser absorbers, carbon black (CB) and copper film with carbon black (CWCB), on the weldability of PC
In order to systematically study the effect of laser irradiation on the interfacial bonding and compactness of SLD-Ti6Al4V coatings and to reveal the relationship between the interfacial bonding and wear resistance of coatings, th
In recent years, ultrafast lasers have become the main source of laser precision manufacturing. The further improvement of laser processing efficiency and capability requires ultrashort pulse lasers with higher average power and s
The beam adjustment method has been widely used in oblique aerial image orientation tasks as a traditional image pose calculation method. However, it highly depends on a good initial value. This dependence often results in slow co
A new bud-shaped moth-eye structure (BSMS) with a parabolic center section was designed based on the excellent anti-reflection performance of the traditional parabola-shaped moth-eye structure (PSMS). With the finite-difference ti
Metamaterial absorber (MA) is a hot research topic recently. To our best knowledge, it is difficult to achieve dual-wavelength high absorption and narrow bandwidth in the near-infrared band at the same time. In this paper, we prop
We proposed an image generation method of ophthalmic optical coherence tomography (OCT) based on the variational auto-encoders to alleviate the problem of insufficient images in deep learning and improve the performance of compute
As an emerging two-dimensional material, MXene is a potential nonlinear optical material. For this purpose, Nb2C nanosheets are prepared and their absorption spectrum is measured with a spectrophotometer. Firstly, Nb2C nanosheets
The novel cascaded optical imaging system designed herein is based on a fore monocentric symmetric objective and a relay lens array, enabling wide-coverage high-resolution aerial imaging. To satisfy ultralow-altitude requirements
The development of low-cost concentrators is one of the important ways to reduce the cost of solar thermal utilization on a large scale. In order to reduce the material cost, a new design idea of water-injected Fresnel condenser i
In the ground experiment of spatial infrared detection equipment, an infrared scene simulator needs to be used to generate an infrared image that simulates the infrared characteristics of a space target under laboratory conditions
A high quality factor (Q-value) terahertz (THz) metamaterial sensor based on double ellipse structure is designed in this paper. Each cell of the sensor contains two 0.2 μm thick metal ellipses at a certain angle and located on th
This paper built a spectral response model of the “Jilin-1” night light remote sensing camera to analyze the reasons of the out-band spectral response and proposed a method for the out-band spectral response correction of the nigh
We simulated the reflectance of typical vegetation in the red-edge region before and after the channel center wavelength shift of hyperspectral remote sensors to quantitatively examine the effect of the channel center wavelength s
The flow velocity is an important limiting factor behind dynamic light scattering (DLS) measurements for flowing aerosols. In this paper, the autocorrelation function (ACF) of scattering intensity under the laminar flow condition
To identify the phytoplankton community by discrete three-dimensional fluorescence spectra, we studied a method based on a self-weighted alternating trilinear decomposition (SWTATLD) algorithm for five common alga species (Microcy
2, 6-Diamino-3, 5-dinitropyrazine (ANPZ) is an important insensitive high explosive of pyrazine type. To further understand the crystal structural characteristics of ANPZ, we employed terahertz time-domain spectroscopy (THz-TDS) t
A compact double-gas sensing system was constructed for the simultaneous sensitive detection of CH4 and CO2,which combines quartz-enhanced photoacoustic spectroscopy (QEPAS) and frequency division multiplexing technique. Two conti