Non-zero dispersion shifted fiber with low cut off wavelength and large effective area

An optical fiber comprising:

• a core region defined by a region around a central longitudinal axis, the core region comprising:
• a first annular region defined from the central longitudinal axis to a first radius r1 from the central longitudinal axis of the optical fiber, wherein the first annular region has a first refractive index delta1, wherein the first annular region in the core region has a parameter Υ (gamma), wherein the first annular region has a super Gaussian profile;
• a second annular region defined from the first radius r1 to a second radius r2 from the central longitudinal axis of the optical fiber, wherein the second annular region has a second refractive index delta2;
• a third annular region defined from the second radius r2 to a third radius r3 from the central longitudinal axis of the optical fiber, wherein the third annular region has a third refractive index delta3, wherein the first annular region, the second annular region and the third annular region are concentrically arranged;
• and
• a cladding region defined from the third radius r3 to a fourth radius r4 from the central longitudinal axis of the optical fiber, wherein the cladding region has a fourth refractive index delta4, the cladding region is further defined by a fourth annular region concentrically surrounding the third annular region,
• wherein the optical fiber has a first set of values defined for a plurality of parameters of the optical fiber comprising the first radius r1, the first refractive index delta1, the Υ (gamma), the second radius r2, the second refractive index delta2, the third radius r3, the third refractive index delta3, the fourth radius r4, the fourth refractive index delta4, a cutoff wavelength, an effective area, a macro bending loss, a mode field diameter, a dispersion value, a zero dispersion wavelength and an attenuation,
• wherein for the first set of values of the plurality of parameters, the first radius r1 is in a range of 4 microns to 5 microns, the first refractive index delta1 is in a range of 0.5 to 0.57, the Υ (gamma) is in a range of 3 to 6, the second radius r2 is in range of 5 microns to 6.5 microns, the second refractive index delta2 is zero, the third radius r3 is in range of 8.8 microns to 10.5 microns, the third refractive index delta3 is in a range of 0.27 to 0.32, the fourth radius r4 is 62.5 microns, the fourth refractive index delta4 is zero, the optical fiber has the cutoff wavelength of less than or equal to 1450 nm, the optical fiber has the effective area in a range of 66 um2 to 78 um2 at a wavelength of 1550 nm, the optical fiber has the macro bending loss of less than 0.1 dB/turn for 16 mm bending radius at a wavelength of 1625 nm and the optical fiber has the macro bending loss of less than 0.005 dB/100 turns for 30 mm bending radius at a wavelength of 1550 nm,
• wherein the optical fiber has a second set of values defined for the plurality of parameters of optical fiber comprising the first radius r1, the first refractive index delta1, the Υ (gamma), the second radius r2, the second refractive index delta2, the third radius r3, the third refractive index delta3, the fourth radius r4, the fourth refractive index delta4, a cutoff wavelength, an effective area, a macro bending loss, a mode field diameter, a dispersion value, a zero dispersion wavelength and an attenuation, and
• wherein for the second set of values of the plurality of parameters, the first radius r1 is in a range of 4 microns to 4.8 microns, the first refractive index delta1 is in a range of 0.51 to 0.57, the Υ (gamma) is in a range of 3 to 6, the second radius r2 is in a range of 5 microns to 6.8 microns, the second refractive index delta2 is zero, the third radius r3 is in a range of 8.5 microns to 9.5 microns, the third refractive index delta3 is in a range of 0.25 to 0.3, the fourth radius r4 is 62.5 microns, the fourth refractive index delta4 is zero, the optical fiber has the cutoff wavelength of less than or equal to 1260 nm, the optical fiber has the effective area in a range of 65 um2 to 73 um2 at a wavelength of 1550 nm, the optical fiber has the macro bending loss of less than 0.5 dB/turn for 16 mm bending radius at a wavelength of 1625 nm and the optical fiber has the macro bending loss of less than 0.05 dB/100 turns for 30 mm bending radius at a wavelength of 1550 nm.

An optical fiber comprising:

• a core region defined by a region around a central longitudinal axis, the core region comprising:
• a first annular region defined from the central longitudinal axis to a first radius r1 from the central longitudinal axis of the optical fiber, wherein the first annular region has a first refractive index delta1, wherein the first annular region in the core region has a parameter Υ (gamma), wherein the first annular region has a super Gaussian profile;
• a second annular region defined from the first radius r1 to a second radius r2 from the central longitudinal axis of the optical fiber, wherein the second annular region has a second refractive index delta2;
• a third annular region defined from the second radius r2 to a third radius r3 from the central longitudinal axis of the optical fiber, wherein the third annular region has a third refractive index delta3, wherein the first annular region, the second annular region and the third annular region are concentrically arranged;
• and
• a cladding region defined from the third radius r3 to a fourth radius r4 from the central longitudinal axis of the optical fiber, wherein the cladding region has a fourth refractive index delta4, the cladding region is further defined by a fourth annular region concentrically surrounding the third annular region,
• wherein the optical fiber has a first set of values defined for a plurality of parameters of the optical fiber comprising the first radius r1, the first refractive index delta1, the Υ (gamma), the second radius r2, the second refractive index delta2, the third radius r3, the third refractive index delta3, the fourth radius r4, the fourth refractive index delta4, a cutoff wavelength, an effective area, a macro bending loss, a mode field diameter, a dispersion value, a zero dispersion wavelength and an attenuation,
• wherein for the first set of values of the plurality of parameters, the first radius r1 is in a range of 4 microns to 5 microns, the first refractive index delta1 is in a range of 0.5 to 0.57, the Υ (gamma) is in a range of 3 to 6, the second radius r2 is in a range of 5 microns to 6.5 microns, the second refractive index delta2 is zero, the third radius r3 is in a range of 8.8 microns to 10.5 microns, the third refractive index delta3 is in a range of 0.27 to 0.32, the fourth radius r4 is 62.5 microns, the fourth refractive index delta4 is zero, the optical fiber has the effective area in a range of 66 um2 to 78 um2 at a wavelength of 1550 nm, the optical fiber has the mode field diameter in a range of 9.2 μm to 10 μm at a wavelength of 1550 nm, the optical fiber has the dispersion value in a range of −4.02 Ps/nm/km to 0.15 Ps/nm/km at a wavelength of 1460 nm, the optical fiber has the dispersion value in a range of 2.00 Ps/nm/km to 4.00 Ps/nm/km at a wavelength of 1530 nm, the optical fiber has the dispersion value in a range of 3.00 Ps/nm/km to 5.00 Ps/nm/km at a wavelength of 1550 nm, the optical fiber has the dispersion value in a range of 4.00 Ps/nm/km to 6.00 Ps/nm/km at a wavelength of 1565 nm, the optical fiber has the dispersion value in a range of 5.77 Ps/nm/km to 11.26 Ps/nm/km at a wavelength of 1625 nm and the optical fiber has the attenuation of less than 0.22 db/km at a wavelength of 1550 nm.
• wherein the optical fiber has a second set of values defined for the plurality of parameters of optical fiber comprising the first radius r1, the first refractive index delta1, the Υ (gamma), the second radius r2, the second refractive index delta2, the third radius r3, the third refractive index delta3, the fourth radius r4, the fourth refractive index delta4, a cutoff wavelength, an effective area, a macro bending loss, a mode field diameter, a dispersion value, a zero dispersion wavelength and an attenuation, and
• wherein for the second set of values of the plurality of parameters, the first radius r1 is in a range of 4 microns to 4.8 microns, the first refractive index delta1 is in a range of 0.51 to 0.57, the Υ (gamma) is in a range of 3 to 6, the second radius r2 is in a range of 5 microns to 6.8 microns, the second refractive index delta2 is zero, the third radius r3 is in a range of 8.5 microns to 9.5 microns, the third refractive index delta3 is in a range of 0.25 to 0.3, the fourth radius r4 is 62.5 microns, the fourth refractive index delta4 is zero, the optical fiber has the effective area in the range of 65 um2 to 73 um2 at a wavelength of 1550 nm, the optical fiber has the mode field diameter in a range of 9.20 μm to 10.00 μm at wavelength of 1550 nm, the optical fiber has the dispersion value in a range of −16.78 Ps/nm/km to −11.36 Ps/nm/km at a wavelength of 1310 nm, the optical fiber has the dispersion value in a range of −4.02 Ps/nm/km to 0.15 Ps/nm/km at a wavelength of 1460 nm, the optical fiber has the dispersion value in a range of 2.00 Ps/nm/km to 4 Ps/nm/km at a wavelength of 1530 nm, the optical fiber has the dispersion value in a range of 3.00 Ps/nm/km to 5.00 Ps/nm/km at a wavelength of 1550 nm, the optical fiber has the dispersion value in a range of 4.00 Ps/nm/km to 6.00 Ps/nm/km at a wavelength of 1565 nm, the optical fiber has the dispersion value in a range of 5.77 Ps/nm/km to 11.26 Ps/nm/km at a wavelength of 1625 nm and the optical fiber has the attenuation of less than 0.22 DB/Km at a wavelength of 1550 nm.