Back to results
US 10,295,736 B2Granted
Multicore fiber
AssigneeFujikura Ltd.
InventorsYoshimichi Amma, Katsuhiro Takenaga, Shota Saito
Life of this patent
Estimating the term…
Abstract
A multicore fiber includes a plurality of cores including a first core and a cladding surrounding the plurality of cores. The first core includes: an inner core; and an outer core surrounding the inner core with no gap and having a refractive index higher than a refractive index of the inner core and a refractive index of the cladding. The core is not doped with any rare earth element. At least two LP mode light beams at a predetermined wavelength propagate through the first core at an attenuation of 0.3 dB/km or less.
Claims7
A multicore fiber comprising:
- a plurality of cores comprising a first core;
- and
- a cladding surrounding the plurality of cores, wherein
- the first core comprises:
- an inner core;
- and
- an outer core surrounding the inner core with no gap and having a refractive index higher than a refractive index of the inner core and a refractive index of the cladding,
- the first core is not doped with any rare earth element, and
- at least two LP mode light beams at a predetermined wavelength propagate through the first core at an attenuation of 0.3 dB/km or less.
6 more elements
Dependencies are inferred from the claim text.