Title:
OPTICAL FIBER
Document Type and Number:
WIPO Patent Application WO/2022/181614
Kind Code:
A1
Abstract:
This optical fiber comprises a core having a maximum refractive index n1 and an outer diameter 2a, and a cladding having a refractive index n0 smaller than the maximum refractive index n1 at an interface with the core. The core has at least a first region and a second region that are each a partial region in the radial direction thereof and are adjacent to each other in the radial direction. The shape of a refractive-index distribution n(r) in the radial direction of the core is defined by an α power indicated in a predetermined equation with respect to a radial distance r from the center of the core. In the first region and the second region, the refractive-index distribution n(r) follows α-power distributions different from each other. The mode field diameter at a wavelength of 1310 nm is 8.2-9.6 μm. The zero dispersion wavelength is 1300-1324 nm. The bend loss at a wavelength 1550 nm at a bend radius of 10 mm is 7.5 dB/10 turn or less.
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Inventors:
INOUE HIROKI (JP)
MORITA KEISEI (JP)
SAITO TAKAHIRO (JP)
MORITA KEISEI (JP)
SAITO TAKAHIRO (JP)
Application Number:
PCT/JP2022/007254
Publication Date:
September 01, 2022
Filing Date:
February 22, 2022
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
G02B6/028; G02B6/036
Domestic Patent References:
| WO2019017324A1 | 2019-01-24 | |||
| WO2019159719A1 | 2019-08-22 |
Foreign References:
| JP2020530586A | 2020-10-22 | |||
| US20110229101A1 | 2011-09-22 | |||
| US20190331850A1 | 2019-10-31 | |||
| JP2019530015A | 2019-10-17 | |||
| JP2005107514A | 2005-04-21 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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