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US 11,656,402 B2Granted
Optical fiber and laser device
AssigneeFujikura Ltd.
InventorsRintaro Kitahara, Tatsuya Kishi
Life of this patent
Estimating the term…
Abstract
An optical fiber includes a core that propagates a light that includes a wavelength equal to or larger than 1000 nm and equal to or smaller than 1100 nm. The light propagates in the core at least in an LP01 mode and an LP11 mode. A difference between a propagation constant of the light in the LP01 mode and a propagation constant of the light in the LP11 mode is 1735 rad/m or larger and 4000 rad/m or smaller.
Claims20
An optical fiber comprising:
- a core that propagates a light that includes a wavelength equal to or larger than 1000 nm and equal to or smaller than 1100 nm, wherein
- the light propagates in the core at least in an LP01 mode and an LP11 mode,
- a difference between a propagation constant of the light in the LP01 mode and a propagation constant of the light in the LP11 mode is 1735 rad/m or larger and 3000 rad/m or smaller,
- a diameter of the core is 20 μm or larger and 29 μm or smaller, and
- a relative refractive index difference of the core with respect to a clad is 0.1% or larger and 0.2% or smaller.
2 more elements
An optical fiber comprising:
- a core that propagates a light that includes a wavelength equal to or larger than 1000 nm and equal to or smaller than 1100 nm, wherein
- the light propagates in the core at least in an LP01 mode and an LP11 mode,
- a difference between a propagation constant of the light in the LP01 mode and a propagation constant of the light in the LP11 mode is larger than 1750 rad/m and smaller than 1850 rad/m.
An optical fiber comprising:
- a core that propagates a light that includes a wavelength equal to or larger than 1000 nm and equal to or smaller than 1100 nm, wherein
- the light propagates in the core at least in an LP01 mode and an LP11 mode,
- a difference between a propagation constant of the light in the LP01 mode and a propagation constant of the light in the LP11 mode is 1735 rad/m or larger and 4000 rad/m or smaller,
- a theoretical cutoff wavelength of the light in the LP11 mode is longer than 1635 nm.
1 more element
An optical fiber comprising:
- a core that propagates a light that includes a wavelength equal to or larger than 1000 nm and equal to or smaller than 1100 nm, wherein
- the light propagates in the core at least in an LP01 mode and an LP11 mode,
- a difference between a propagation constant of the light in the LP01 mode and a propagation constant of the light in the LP11 mode is 1735 rad/m or larger and 4000 rad/m or smaller,
- a theoretical cutoff wavelength of the light in an LP02 mode is 1760 nm or shorter.
1 more element
Dependencies are inferred from the claim text.