Anamorphic microlens for coupling optical fibers to...

Details Anamorphic microlens for coupling optical fibers to... Anamorphic microlens for coupling optical fibers to...

G - Physics

02

B

G02B 6/32 (2006.01) G02B 6/42 (2006.01)

Patent

CA 2149987

To couple the elliptical mode field light beam of a laser radiation source to a circularly symmetric single- mode optical fiber, the end of the fiber is provided with an anamorphic lens. The double wedge-shaped lens provides high coupling efficiency and is easily constructed. Other anamorphic lenses are also disclosed. A single wedge lens can provide high coupling efficiency if it is formed on the end of a coupling fiber which has a core that is elliptically-shaped in cross-section, the line of intersection of the two surfaces forming the lens being aligned with the major axis of the elliptical fiber core.

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