Air Force

Precision laser coupling device for single-mode fiber optics

Other applications include optical tweezers, coupling light into optical cavities, and laser milling

Photonics

U.S. Air Force scientist Matthew Squires has invented a positioning device for the stable and repeated coupling of a laser beam and a fiber optic cable. The patented technology is available via license agreement to companies that would make, use, or sell it commercially.

The device contains four prisms (two Risley prism pairs) that can change the laser beam’s angle of incidence and position.

The prisms are precisely manipulated by an electric motor, which is directed by a computerized controller connected to an optical sensor that provides feedback on the beam coupling.

The controller’s software allows the device to effectively mitigate or eliminate hysteresis.

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