Optical fiber for coupling to elliptically-shaped source

Details Optical fiber for coupling to elliptically-shaped source Optical fiber for coupling to elliptically-shaped source

1993-11-08

1994-09-27

Healy, Brian

Optical waveguides

With optical coupler

Particular coupling function

385 30, 385 33, 385 31, 385 42, 385 43, G02B 626

Patent

active

053513231

ABSTRACT:
An optical system for coupling a laser radiation source to a circularly symmetric single-mode optical fiber. The laser radiation source produces a beam of light having an elliptical mode field. The input end of a coupling fiber, which has a core that is elliptically-shaped in cross-section, is situated in light receiving relationship with respect to the source. The coupling fiber is oriented with respect to the source such that the mode field of the source is aligned with the coupling fiber core to provide the most efficient coupling of light from the source to the fiber. Means such as an evanescent coupler couples light from the output end of the fiber to the circularly symmetric fiber.

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