High strength optical fiber splice

Details High strength optical fiber splice High strength optical fiber splice

G - Physics

02

B

26/197, 88/97

G02B 6/255 (2006.01) G02B 6/245 (2006.01) G02B 6/25 (2006.01) G02B 6/38 (2006.01)

Patent

CA 2002986

ABSTRACT Two optical fibers (22,24) are spliced together to form a single spliced optical fiber. The spliced region is uncontaminated by impurities, and has substantially no loss of optical transmission or mechanical strength as compared to the other regions of the fibers. Splicing is accomplished by removal of the buffer coating (16), if any, cleaving of the fibers to be spliced to form facing splicing surfaces, careful precleaning of the cleaved fibers in the region adjacent the splicing surfaces, aligning the fibers using optical transmission as the alignment criterion, fusing the fibers together by pre- heating the region to be spliced, fusing the region, post- annealing the spliced region, carefully postcleaning the spliced region, and recoating the spliced region with a UV curable polymer buffer material, if desired. The heating of the fibers to accomplish the fusion is desirable accom- plished by a laser such as a carbon dioxide laser (50).

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