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单词 Prism coupler
释义

Prism coupler

英语百科

Prism coupler

Prism Coupler with incident beam.
Prism Coupler with light scattered from a guided wave, and reflection from the bottom of the substrate.

A prism coupler is a prism designed to couple a substantial fraction of the power contained in a beam of light (e.g., a laser beam) into a thin film to be used as a waveguide without the need for precision polishing of the edge of the film, without the need for sub-micrometer alignment precision of the beam and the edge of the film, and without the need for matching the numerical aperture of the beam to the film. Using a prism coupler, a beam coupled into a thin film can have a diameter hundreds of times the thickness of the film. Invention of the coupler contributed to the initiation of a field of study known as integrated optics.

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更新时间:2025/6/22 1:43:17