Patent ID: 7680380

Claim:
A preconnectorized fiber optic jumper assembly comprising: a microstructured fiber having a hole-free inner annular cladding region surrounding the core region, an annular hole-containing cladding region surrounding the inner annular cladding region and comprised of non periodically disposed holes, and an outer hole-free cladding region surrounding the annular hole-containing cladding region, wherein the core region has a radius R 1 in the range from 1 μm to 5 μm, the inner annular cladding region has a radius R 2 in the range between 10 μm and 20 μm, and the annular hole-containing cladding region has an annular width W 23 in the range from 0.5 μm to 20 μm; at least one connector mounted upon each end of the at least one microstructured fiber; and wherein the microstructure fiber has a delta attenuation of 0.00 dB at 5 wraps about a 6 mm diameter at a reference wavelength of 1625 nm.