Abstract
We propose and demonstrate a novel type of bending-insensitive single-mode hole-assisted fiber that has a doped core and two layers of holes with two different airhole diameters. The fiber has a mode field diameter, a bending loss of at for a bending diameter of 10 mm, and a cutoff wavelength below . The fiber can be fusion spliced to a conventional single-mode fiber with low loss.
© 2005 Optical Society of America
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