Abstract: A proposed fabrication technique for a polarization-absorbing wire grid polarizer avoids the need to etch through the multilayer stack of materials to form the grid structure. Initial reflective metal and dielectric buffer layers are patterned and etched in a conventional manner to create the desired grid topology. A small-angle coating process is then used to complete the fabrication process by first coating the top surface of the patterned dielectric with a polarization-absorbing metal. A second coating process is used to cover the created metal coating with a dielectric cladding material. Maintaining a small angle of incidence between the coating source and the wire grid structure ensures that top portions of the grid are suitably covered to create the desired multilayer wire configuration.

Abstract: A short-waveband active optical component based on a vertical emitting laser and a multi-mode optical fiber has an emitting end and a receiving end. In the emitting end, multiple VCSELs generate multiple optical signals of different wavelengths, and multiple photodiodes in the receiving end receive the optical signals emitted by the VCSELs. Both ends use a focusing lens array to collimate and focus the optical signals A Z-block-shaped prism performs a light combining function at the emitting end, while another Z-block-shaped prism performs a light splitting function at the receiving end. Both ends use a focusing lens for collimating and focusing the optical signals at ends of a multi-mode optical fiber, which is used for transmitting the optical signals generated by the VCSELs. The short-waveband active optical component has a small size and a high transmission rate.

Abstract: A short-waveband active optical component based on a vertical emitting laser and a multi-mode optical fiber has an emitting end and a receiving end. In the emitting end, multiple VCSELs generate multiple optical signals of different wavelengths, and multiple photodiodes in the receiving end receive the optical signals emitted by the VCSELs. Both ends use a focusing lens array to collimate and focus the optical signals A Z-block-shaped prism performs a light combining function at the emitting end, while another Z-block-shaped prism performs a light splitting function at the receiving end. Both ends use a focusing lens for collimating and focusing the optical signals at ends of a multi-mode optical fiber, which is used for transmitting the optical signals generated by the VCSELs. The short-waveband active optical component has a small size and a high transmission rate.

Abstract: An optical assembly is used for communicating laser light from a plurality of laser sources into channels for an optical network. The optical assembly comprises an optical substrate, an input optic, at least one Z-block, filters, at least one fiber collimator, and at least one delivery fiber. The input optic is disposed on the optical substrate and is configured to receive the laser light from the laser sources. The input optic is configured to collimate the laser light into a plurality of collimated laser beams. The at least one Z-block is disposed on the substrate and has an input surface and an output surface. The input surface has a plurality of filters disposed thereon, and the input surface is disposed at an angle of incidence relative to the collimated beams from the input optic. The output surface is disposed parallel to the input surface and can have at least one isolator.

Abstract: An optical fiber array collimator is disclosed for use in a multi-line LiDAR application. The collimator includes an optical fiber array assembly, a collimating lens assembly and a housing. The optical fiber array assembly and a collimating lens assembly are positioned, assembled, and fixed in the housing. The light output surface of the optical fiber array assembly is installed near the focal plane of the collimating lens assembly. By adjusting the distance between the optical fiber array and the collimating lens, the high-precision collimated output beams from multiple optical fibers can be realized simultaneously. The fiber array can be packed and assembled with dozens or hundreds of fibers with high density. The fiber arrangement has the characteristics of adjustable density, high precision spacing and high reliability. The collimating lens includes at least one spherical or aspherical lens, which can achieve minimal aberration in different fields of view through optical design optimization.

Abstract: The present disclosure discloses a miniaturized MOPA structure DPSSL (Diode Pumped Solid State Laser), which comprises a laser oscillator module and a laser amplifier module. The laser oscillator module consists of a seed laser and its collimating system, and the laser amplifier module consists of a laser pump module and a laser gain element. The seed laser with high beam quality is collimated by collimation system, then input into the gain element; the pump laser is pumped into the gain element via end pump or side pump mode. The seed laser beam transmits into the gain medium and is reflected by the interface several times with the “Zigzag” path, which makes the seed laser fully gained and amplified, finally achieving high power and high beam quality laser output. In this present disclosure, the laser gain material is doped with different rare-earth ion concentrations and processed into different shapes.

Abstract: A short-waveband active optical component based on a vertical emitting laser and a multi-mode optical fiber has an emitting end and a receiving end. In the emitting end, multiple VCSELs generate multiple optical signals of different wavelengths, and multiple photodiodes in the receiving end receive the optical signals emitted by the VCSELs. Both ends use a focusing lens array to collimate and focus the optical signals A Z-block-shaped prism performs a light combining function at the emitting end, while another Z-block-shaped prism performs a light splitting function at the receiving end. Both ends use a focusing lens for collimating and focusing the optical signals at ends of a multi-mode optical fiber, which is used for transmitting the optical signals generated by the VCSELs. The short-waveband active optical component has a small size and a high transmission rate.

Abstract: A short-waveband active optical component based on a vertical emitting laser and a multi-mode optical fiber (3) is provided.

Abstract: A small integrated free space circulator, comprising a first polarizing beam splitter (1), a half-wave plate (2), a Faraday rotating plate (3), a beam splitter (4), a quarter-wave plate (5), and a pair of reflective plates (6, 7), wherein the first polarizing beam splitter (1), the half-wave plate (2), the Faraday rotating plate (3), and the beam splitter (4) are sequentially arranged, the quarter-wave plate (5) and the reflective plate (6) are sequentially attached to a side surface of the first polarizing beam splitter (1) adjacent to the half-wave plate (2), and the reflective plate (7) is arranged on a side surface of the beam splitter (4, 8) adjacent to or opposite to the Faraday rotating plate (3); when the reflective plate (7) is arranged on the side surface of the beam splitter (8) opposite to the Faraday rotating plate (3), the reflective plate (7) partially covers the side surface of the beam splitter (8) opposite to the Faraday rotating plate (3).

Abstract: Provided is a wide angle application high reflective mirror having a reflection band partially overlapping in a wavelength range of 800-4000 nm. The mirror comprises a film system in which a plurality of high refractive index film layers and a plurality of low refractive index film layers that are alternately stacked, and the material of the high refractive index film layer is one of SiH, SiOxHy, or SiOxNy, or a mixture thereof. The highly reflective mirror can achieve a reflectance greater than 99% with an incident angle ranging from 0 to 60 degrees over a large angle range.

Abstract: A short-waveband active optical component based on a vertical emitting laser and a multi-mode optical fiber (3) is provided.

Abstract: A 3D identification filter (101) is provided, which has a passband partially overlapping with a wavelength range of 800 nm to 1800 nm and a blocking band containing a range of 380 nm to 750 nm, and comprises a substrate (102) and filter film layers (103, 104) coated on both surfaces of the substrate, wherein the filter film layer (103) on one of the surfaces is composed of high refractive index layers, medium refractive index layers, and low refractive index layers that are stacked, and the filter film layer (104) on the other surface is composed of at least two layers of materials that are stacked. The 3D identification filter (101) maintains a high bocking level and a narrow transition band while achieving a small wavelength shift at a large light incident angle.