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 9.3 µm mode field diameter, a bending loss of 0.011 dB/turn at 1.55 µm for a bending diameter of 10 mm, and a cutoff wavelength below 1.1 µm. The fiber can be fusion spliced to a conventional single-mode fiber with low loss.
© 2005 Optical Society of America
Kunimasa Saitoh, Yukihiro Tsuchida, and Masanori Koshiba, "Bending-insensitive single-mode hole-assisted fibers with reduced splice loss," Opt. Lett. 30, 1779-1781 (2005)