US 12,189,178 B2
Optical fiber
Yuto Sagae, Musashino (JP); Takashi Matsui, Musashino (JP); and Kazuhide Nakajima, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/928,498
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Jun. 3, 2020, PCT No. PCT/JP2020/021889
§ 371(c)(1), (2) Date Nov. 29, 2022,
PCT Pub. No. WO2021/245827, PCT Pub. Date Dec. 9, 2021.
Prior Publication US 2023/0244028 A1, Aug. 3, 2023
Int. Cl. G02B 6/02 (2006.01); G02B 6/028 (2006.01); G02B 6/036 (2006.01)
CPC G02B 6/03622 (2013.01) [G02B 6/02009 (2013.01); G02B 6/02219 (2013.01); G02B 6/02266 (2013.01); G02B 6/02366 (2013.01); G02B 6/0281 (2013.01); G02B 6/036 (2013.01); G02B 6/03627 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An optical fiber, comprising,
in a cross section of the optical fiber, one core region and a cladding region that is arranged on an outer periphery of the core region,
wherein the cladding region is a medium having a lower refractive index n than that of the core region and having a smaller refractive index wavelength dispersion than that of the core region,
in which the refractive index n satisfies, at a wavelength of 1.55 μm,
1.444>n>−0.0343νd+3.771,
provided that νd is an Abbe number.