Coupling high power optical sources to small diameter fibers

Details Coupling high power optical sources to small diameter fibers Coupling high power optical sources to small diameter fibers

2006-09-12

2006-09-12

Palmer, Phan (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S027000, C385S124000

Reexamination Certificate

active

07106928

ABSTRACT:
The present invention relates to coupling high power optical sources into small diameter optical fibers. In a first embodiment, an optical source is provided to the side of a fiber. The fiber is a single mode fiber, which has a cladding and a core, with a Bragg grating written into the core at a low angle. Light emitted from the optical source is index-match coupled into the cladding by using an index-matched element, and subsequently coupled into the fiber core along its length. Alternatively, the light is launched into an end of a larger diameter fiber with a mode reducing means, e.g. long period grating, therein for directing the light into the small diameter fiber.

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patent: 5659644 (1997-08-01), DiGiovanni et al.
patent: 5774484 (1998-06-01), Wyatt et al.
patent: 6904198 (2005-06-01), Dykaar
“New Termination Process Enables Cost-Effective Manufacturing of Tunable Optical Fibers”, Northrop Grumman, Tech of the Week.
“Development of Holey Fiber Supporting Extra Small Diametr Bending”, Nishioka et al, Information and Comm. Systems, SEI Technical Review No. 58, Jun. 2004, p. 42-47.

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