Back to results
US 11,561,341 B2Granted
Cutoff shifted optical fibre
OwnerApeksha Malaviya, Srinivas Reddy +2inventors
InventorsApeksha Malaviya, Srinivas Reddy, MalleshwaraRao Lanke, Anand Kumar Pandey
Life of this patent
Estimating the term…
Abstract
The present disclosure provides an optical fibre. The optical fibre includes a core extended from a central longitudinal axis to a first radius r1. Further, the optical fibre includes a first trench region extended from a second radius r2 to a third radius r3, a second trench region extended from the third radius r3 to a fourth radius r4 and a cladding region extended from the fourth radius r4 to a fifth radius r5.
Claims18
An optical fibre comprising:
- a core, wherein the core has a first relative refractive index Δ1, wherein the first relative refractive index Δ1 of the core is in a range of 0 to 0.12;
- a first trench region, wherein the first trench region has a relative refractive index Δ3, wherein the first trench region has a first alpha αtrench-1;
- a second trench region, wherein the second trench region is adjacent to the first trench region, wherein the second trench region has a relative refractive index Δ4, wherein the second trench region has a second alpha αtrench-2;
- and
- a cladding region, wherein the cladding region surrounds the second trench region, wherein the cladding region has a third relative refractive index Δ5 of 0,
- wherein the optical fibre has attenuation of less than or equal to 0.17 dB/km at a wavelength of 1550 nanometer, wherein the optical fibre has a mode field diameter in a range of 12 microns to 13 microns,
- wherein the optical fibre has gradual variation in core and trench regions of refractive index profile.
4 more elements
An optical fibre comprising:
- a core, wherein the core has a first relative refractive index Δ1, wherein the first relative refractive index Δ1 of the core is in a range of 0 to 0.12;
- a first trench region, wherein the first trench region has a relative refractive index Δ3, wherein first trench region has a first alpha αtrench-1;
- a second trench region, wherein the second trench region is adjacent to the first trench region, wherein the second trench region has a relative refractive index Δ4, wherein the second trench region has a second alpha αtrench-2, wherein an absolute value of the relative refractive index Δ4 is greater than an absolute value of the relative refractive index Δ3;
- and
- a cladding region, wherein the cladding region surrounds the second trench region, wherein the cladding region has a third relative refractive index Δ5 of 0,
- wherein the optical fibre has attenuation of less than or equal to 0.17 dB/km at a wavelength of 1550 nanometer, wherein the optical fibre has a mode field diameter in a range of 12 microns to 13 microns, wherein the optical fibre has gradual variation in core and trench regions of refractive index profile.
3 more elements
Dependencies are inferred from the claim text.