Low attenuation non-zero dispersion shifted optical fiber
AssigneeCorning Incorporated
InventorSnigdharaj Kumar Mishra
Life of this patent
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Abstract
An optical waveguide fiber having a zero-dispersion wavelength less than 1450 nm, a dispersion slope at a wavelength of 1550 of less than 0.06 ps/nm2/km nm, and attenuation at a wavelength of 1550 nm less than 0.190 dB/km. Optical fibers are disclosed that exhibit an effective area at a wavelength of 1550 nm of greater than 50 μm2, and dispersion at a wavelength of 1550 nm between 5 and 15 ps/nm-km.
Claims19
An optical waveguide fiber comprising a central core region, a zero-dispersion wavelength less than 1450 nm, a dispersion slope at a wavelength of 1550 of less than 0.06 ps/nm2/km, and an attenuation at a wavelength of 1550 nm less than 0.190 dB/km,
- wherein the central core region comprises a central portion and an outer portion surrounding and directly adjacent the central portion, and the central portion extends radially outwardly from the centerline to a central portion outer radius, R0, and has a relative refractive index percent, Δ0%(r) with a maximum relative refractive index percent, Δ0MAX;
- wherein the outer portion extends radially outwardly from the central region to a core radius, R1, the outer portion having a relative refractive index percent, Δ1%(r) with a maximum relative refractive index percent, Δ1MAX, wherein Δ1MAX is non-positive.
An optical waveguide fiber comprising a central core region, an annular region surrounding and directly adjacent the central core region, and an outer cladding surrounding and directly adjacent the annular region;
- wherein the central core region comprises a central portion and an outer portion surrounding and directly adjacent the central portion, and the central portion extends radially outwardly from the centerline to a central portion outer radius, R0, and has a relative refractive index percent, Δ0%(r) with a maximum relative refractive index percent, Δ0MAX;
- wherein the outer portion extends radially outwardly from the central region to a core radius, R1, the outer portion having a relative refractive index percent, Δ1%(r) with a maximum relative refractive index percent, Δ1MAX;
- wherein the annular region surrounds and is directly adjacent the outer portion of the central core region, and has a negative relative refractive index percent, Δ2%(r) with a maximum relative refractive index percent, Δ2MIN;
- and
- wherein the optical waveguide fiber comprises a zero-dispersion wavelength less than 1450 mm, a dispersion slope at a wavelength of 1550 of less than 0.06 ps/nm2/km, and an attenuation at a wavelength of 1550 nm less than 0.190 dB/km.
An optical waveguide fiber comprising a zero-dispersion wavelength less than 1450 nm, a dispersion slope at a wavelength of 1550 of less than 0.06 ps/nm2/km, and an attenuation at a wavelength of 1550 nm less than 0.190 dB/km, wherein the optical fiber has a dispersion at a wavelength of 1550 nm between 5 and 15 ps/nm-km.
Dependencies are inferred from the claim text.