Apparatus for coupling a multiple emitter laser diode to a multi

Details Apparatus for coupling a multiple emitter laser diode to a multi Apparatus for coupling a multiple emitter laser diode to a multi

1990-11-16

1992-06-30

Lee, John D.

Optical waveguides

With optical coupler

Input/output coupler

385119, G02B 626, G02B 642

Patent

active

051270684

ABSTRACT:
A small diameter multimode optical fiber with a low numerical aperture (i.e., 0.1) is used as a microlens to collimate the output emissions of a laser diode before butt coupling the output of the laser diode to an optical fiber. The optical fiber used as the microlens is chosen such that its diameter roughly equals the diameter of the fiber to be coupled to the laser diode. The collimation is performed in the high NA direction of the output of the laser diode. The output of a bundle of butt coupled optical fibers may be used to pump a laser system.

REFERENCES:
patent: 4723257 (1988-02-01), Baer et al.
patent: 4744620 (1988-05-01), Ueno et al.
patent: 5027359 (1991-06-01), Leger et al.
patent: 5046798 (1991-09-01), Yagui et al.
Cunningham, Collimated Light Source with Laser Diode and Microcylindrical Lens, IBM Technical Disclosure Bulletin, vol. 19, No. 2, p. 629, Jul. 1976.

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