Patent ID: 7634164

Claim:
A fiber optic article, comprising: a core; an inner region surrounding said core, said inner region having inner and outer perimeters spaced by a thickness T 1 therebetween, a first cross sectional area defined as all the area within said outer perimeter of said inner region; a cladding surrounding said inner region, said cladding having inner and outer perimeters spaced by a thickness T 2 therebetween, said outer perimeter of said cladding having a geometric center; a second cladding disposed about said cladding; said inner region having an index of refraction that is less the index of refraction of said core, said cladding having an index of refraction that is less than the index of refraction of said inner region and said second cladding comprising an index of refraction that is less than the index of refraction of said cladding; and wherein T 2 is greater than T 1 , said outer perimeter of said inner region is non-circular in shape, the geometric center of said cladding lies within said first cross sectional area and said T 1 refers to a maximum thickness of said inner region and said T 2 refers to a maximum thickness of said cladding.