L-band dispersion compensating fiber and transmission system including same

An optical transmission system having a dispersion compensating optical fiber, wherein the dispersion compensating fiber comprises:

• a segmented core having at least three segments including a central core segment, a moat segment, and a ring segment wherein the central core segment has an outer radius R1 in the range between 1.5 μm to 2.0 μm, the refractive index profile being selected to provide
• total diversion at 1595 nm between −70 ps/nm-km and −225 ps/nm-km;
• a dispersion slope more negative than −0.7 ps/nm2-km at 1595 nm;
• and
• a range of kappa values, defined as the dispersion at a particular wavelength divided by the dispersion slope at the particular wavelength, of between 80 nm to 155 nm for all wavelengths in a wavelength range between 1570 nm and 1620 nm, and kappa value at 1595 nm between 90 nm and 110 nm.

A dispersion compensating optical fiber, comprising:

• a segmented core having at least three segments including a central core segment, a moat segment, and a ring segment wherein the central core segment has a relative refractive index Δ1 % in the range of 1.5% to 2.0% and an outer radius R1 in the range between 1.5 μm to 2.0 μm, a refractive index profile of the segmented core being selected to provide
• a total dispersion at 1595 nm between about −110 ps/nm-km and −150 ps/nm-km;
• a dispersion slope at 1595 nm of between −0.9 ps/nm2-km and −1.5 ps/nm2-km;
• and
• a range of kappa values, defined as the dispersion at a particular wavelength divided by the dispersion slope at the particular wavelength, of between 80 nm to 155 nm for all wavelengths in a wavelength range between 1570 nm and 1620 nm, and a kappa value at 1595 nm between 90 nm and 110 nm.

An optical transmission system, comprising:

• a dispersion compensating optical fiber having a segmented core and a refractive index profile with at least three segments including a central core segment, a moat segment, and a ring segment wherein the central core segment has an outer radius R1 in the range between 1.5 μm to 2.0 μm, the refractive index profile being selected to provide
• a total dispersion at 1595 nm between about −110 ps/nm-km and −150 ps/nm-km,
• a dispersion slope at 1595 nm of between −0.9 ps/nm2-km and −1.5 ps/nm2-km, and
• a range of kappa values, defined as the dispersion at a particular wavelength divided by the dispersion slope at the particular wavelength, of between 80 nm to 155 nm for all wavelengths in a wavelength range between 1570 nm and 1620 nm, and a kappa value at 1595 nm between 90 nm and 110 nm, and
• a non-zero dispersion shifted fiber coupled to the dispersion compensating optical fiber, the non-zero dispersion shifted fiber having a dispersion slope of between about 0.065 and 0.08 ps/nm2-km at 1595 nm.

An optical transmission system, comprising:

• a dispersion compensating optical fiber having a refractive index profile with a segmented core and at least three segments including a central core segment, a moat segment, and a ring segment wherein the central core segment has an outer radius R1 in the range between 1.5 μm to 2.0 μm, the refractive index profile being selected to provide
• a total dispersion at 1595 nm between −0.7 ps/nm-km and −225 ps/nm-km;
• a dispersion slope more negative than −0.7 ps/nm2-km at 1595 nm;
• and
• a range of kappa values, defined as the dispersion at a particular wavelength divided by the dispersion slope at the particular wavelength, of between 80 nm to 155 nm for all wavelengths in a wavelength range between 1570 nm and 1620 nm, and a kappa value at 1595 nm between 90 nm and 110 nm, and
• a non-zero dispersion shifted fiber coupled to the dispersion compensating optical fiber, the non-zero dispersion shifted fiber having a dispersion slope of between about 0.065 and 0.08 ps/nm2-km at 1595 nm wherein a residual dispersion of the transmission system over the wavelength range from 1570 nm to 1620 nm is no greater than +/−25 ps/km-nm per a 100 km length of the non-zero dispersion shifted fiber.