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US 6,959,135 B1Granted
SBS suppressed nonlinear optical fiber
AssigneeCorning Incorporated
InventorsScott R. Bickham, Dmitri V. Kuksenkov, Shenping Li
Life of this patent
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Abstract
An optical waveguide fiber having a high threshold for stimulated Brillouin scattering is disclosed which is suitable as a nonlinear fiber. The optical fiber has a core with one or more core segments. The optical effective area at a wavelength of 1550 nm is less that 30 μm2.
Claims18
An optical fiber comprising:
- a fiber length, L, in km;
- a core having a centerline, an outer diameter RCORE, and refractive index profile extending from the centerline to RCORE;
- and
- a cladding layer surrounding and directly adjacent the core, the cladding layer having an outer diameter RCLAD;
- wherein the optical fiber has an attenuation at 1550 nm, α, in dB/km;
- wherein the refractive index of the core is selected to provide:
- an optical effective area at 1550 nm less than about 30 μm2;
- and
- an absolute SBS threshold in milliwatts greater than about 7.0+10 log [(1−e−(0.5)(10)/4.343)/(1−e−(α)(L)/4.343)].
6 more elements
An optical fiber comprising:
- a fiber length, L, in km;
- a core having a refractive index profile and a centerline;
- and
- a cladding layer surrounding and directly adjacent the core;
- wherein the optical fiber has an attenuation at 1550 nm, α, in dB/km;
- wherein L is greater than 1 km;
- wherein α is less than 0.5 dB/km;
- wherein the refractive index of the core is selected to provide;
- an optical effective area at 1550 nm, Aeff, less than about 30 μm2;
- and
- an absolute SBS threshold, Pth, in milliwatts;
- wherein Pth/Aeff, in milliwatts/μm2, is greater than about 2.5.
9 more elements
Dependencies are inferred from the claim text.