Free space high power fiber coupler

Details Free space high power fiber coupler Free space high power fiber coupler

2009-02-11

2009-08-25

Healy, Brian M (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S029000, C385S124000, C385S127000, C385S128000, C385S140000

Reexamination Certificate

active

07580600

ABSTRACT:
A waveguide receiving light which propagates through free space is configured with a coupler and delivery fiber. The coupler, including a GREEN or multimode fiber, has a protective coating and so does the delivery fiber. Upon splicing of the coupler to the delivery fiber, the protective coatings of the respective coupler and delivery fiber are spaced apart exposing thus end regions of the respective coupler and fiber. The exposed regions are covered by a light stripper made of material having a refractive index which is substantially the same as or greater than that one of outer claddings. Accordingly, the light stripper minimizes the amount of light capable of coupling into the protective coatings of the respective delivery and coupler fibers enhancing thus a power handling capabilities of the waveguide.

REFERENCES:
patent: 4958897 (1990-09-01), Yanagawa et al.
patent: 5867513 (1999-02-01), Sato
patent: 5930423 (1999-07-01), Chen et al.
patent: 6487338 (2002-11-01), Asawa et al.
patent: 7349596 (2008-03-01), Anderegg et al.
patent: 2002/0126954 (2002-09-01), Aswawa et al.
patent: 2007/0217738 (2007-09-01), Anderegg et al.

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