A few mode optical fiber comprising: a core region defined by a region around a central longitudinal axis of the few mode optical fiber, characterized in that the core region comprises: a first annular region, wherein the first annular region is between the central longitudinal axis and a first radius r 1, wherein the first annular region has a first refractive index delta-1; a second annular region, wherein the second annular region is between the first radius r 1 and a second radius r 2, wherein the second annular region has a second refractive index delta-2 and the second refractive index delta-2 is approximately zero, a third annular region, wherein the third annular region is between the second radius r 2 and a third radius r 3, wherein the third annular region has a third refractive index delta-3; a fourth annular region, wherein the fourth annular region is between the third radius r 3 and a fourth radius r 4, wherein the fourth annular region has a fourth refractive index Δ 4, wherein the fourth radius r 4 is in a range of 8.3 microns to 9.9 microns and the fourth refractive index delta-4 is approximately zero; a fifth annular region, wherein the fifth annular region is between the fourth radius r 4 and a fifth radius r5, wherein the fifth annular region has a fifth refractive index delta-5, wherein the fifth radius r 5 is in a range of 10.9 microns to 12.6 microns and the fifth refractive index delta-5 is in a range of 0.41 to 0.62; and a cladding region surrounding the core region, wherein the cladding region is a sixth annular region between the fifth radius r5 and a sixth radius r6, wherein the sixth annular region has a sixth refractive index delta-6, wherein the sixth radius r6 is 62.5 microns and the sixth refractive index delta-6 is approximately zero; and wherein the first annular region, the second annular region, the third annular region, the fourth annular region, the fifth annular region and the sixth annular region are concentrically arranged about the central longitudinal axis; wherein the few mode optical fiber has a spatial overlap between Lp01 mode and Lp11 mode of less than 10 -5, wherein the third annular region is downdoped, and the first annular region and fifth annular region are updoped. a first annular region, wherein the first annular region is between the central longitudinal axis and a first radius r 1, wherein the first annular region has a first refractive index delta-1; a second annular region, wherein the second annular region is between the first radius r 1 and a second radius r 2, wherein the second annular region has a second refractive index delta-2 and the second refractive index delta-2 is approximately zero, a third annular region, wherein the third annular region is between the second radius r 2 and a third radius r 3, wherein the third annular region has a third refractive index delta-3; a fourth annular region, wherein the fourth annular region is between the third radius r 3 and a fourth radius r 4, wherein the fourth annular region has a fourth refractive index Δ 4, wherein the fourth radius r 4 is in a range of 8.3 microns to 9.9 microns and the fourth refractive index delta-4 is approximately zero; a fifth annular region, wherein the fifth annular region is between the fourth radius r 4 and a fifth radius r5, wherein the fifth annular region has a fifth refractive index delta-5, wherein the fifth radius r 5 is in a range of 10.9 microns to 12.6 microns and the fifth refractive index delta-5 is in a range of 0.41 to 0.62; and a cladding region surrounding the core region, wherein the cladding region is a sixth annular region between the fifth radius r5 and a sixth radius r6, wherein the sixth annular region has a sixth refractive index delta-6, wherein the sixth radius r6 is 62.5 microns and the sixth refractive index delta-6 is approximately zero; and wherein the first annular region, the second annular region, the third annular region, the fourth annular region, the fifth annular region and the sixth annular region are concentrically arranged about the central longitudinal axis; wherein the few mode optical fiber has a spatial overlap between Lp01 mode and Lp11 mode of less than 10 -5, wherein the third annular region is downdoped, and the first annular region and fifth annular region are updoped.