Conical Lensed Fiber

Output far-field spot [Pointed cone]: Annular Top cone included angle [Pointed cone]: 60°~120° Top [Flat cone]: Arc-shaped

Lensed fibers have fiber end faces precision-machined into multiple angled surfaces or cones, with a flat or spherical surface at the core tip, to meet specific optical path, spot, and coupling requirements. Photonstream can manufacture lensed fibers with various specially shaped end faces and apply additional optical coatings according to customer requirements. These are customized optical products.

Polyimide-coated heat-resistant fiber serves high-temperature sensing. This polymer combines high-/low-temperature resistance,strong mechanics and excellent overall properties,improving coating temperature tolerance/life while retaining low-temperature flexibility without brittle cracking. Common in high-/low-temperature distributed sensing.

Beveled fiber lenses mainly fall into two categories. One has bevel angles of 6°～10° to prevent surface-reflected light from causing interference or damage on its return path. The other has angles of 40°～50° or greater, changing the optical path or producing large-angle total reflection. It can also increase the fiber's light-receiving area to admit more light. Main applications include fiber lasers, fiber-optic communications, conventional optics, and fiber sensing.

Lens Radius [Tolerance :±1um]: 4~16um Cone Angle (Full Angle) [Tolerance :±5°]: 60°~120° Fiber Type: Single-mode fiber/multimode fiber/polarization-maintaining fiber, other special fibers and customer-specified fibers

Conical fiber lenses increase NA/collection for coupling circular or near-circular LD,DFB,SLD and VCSEL beams. Precision conical tips also serve laser microsurgery/microillumination. Maturing silicon-photonics fiber/waveguide coupling uses them to improve efficiency.