A fuel injector nozzle for a gas turbine engine, comprising: first, second and third annular sleeves, respectively having inner (66,70, 74) and outer (68, 72, 76) circumferential walls, and axial length, the sleeves (56, 58, 60) nested, concentrically aligned, and radially spaced; a first fluid passage defined between the inner circumferential wall of the first sleeve and the outer circumferential wall of the second sleeve; a first discharge opening at a downstream axial end of the fuel injector nozzle, in fluid communication with the first fluid passage; a second fluid passage defined between the inner circumferential wall of the second sleeve and the outer circumferential wall of the third sleeve; a second discharge opening at the downstream axial end of the fuel injector nozzle, in fluid communication with the second fluid passage; a first vane having a first end coupled to the inner circumferential wall of the first sleeve, and a second end coupled to the outer circumferential wall of the second sleeve; a second vane, circumferentially or axially spaced from the first vane, having a first end coupled to only one of the inner circumferential wall of the first sleeve or the outer circumferential wall of the second sleeve, and a second end in a radially opposed and spaced relationship with the other, non-coupled circumferential wall of the first sleeve or the second sleeve, defining a second vane gap there between; a third vane having a first end coupled to the inner circumferential wall of the second sleeve, and a second end coupled to the outer circumferential wall of the third sleeve; a fourth vane, circumferentially or axially spaced from the third vane, having a first end coupled to only one of the inner circumferential wall of the second sleeve or the outer circumferential wall of the third sleeve, and a second end in a radially opposed and spaced relationship with the other, non-coupled circumferential wall of the second sleeve or the third sleeve, defining a fourth vane gap there between; the first, second and third annular sleeves, and the first, second, third and fourth vanes formed in a monolithic, three-dimensional structure. first, second and third annular sleeves, respectively having inner (66,70, 74) and outer (68, 72, 76) circumferential walls, and axial length, the sleeves (56, 58, 60) nested, concentrically aligned, and radially spaced; a first fluid passage defined between the inner circumferential wall of the first sleeve and the outer circumferential wall of the second sleeve; a first discharge opening at a downstream axial end of the fuel injector nozzle, in fluid communication with the first fluid passage; a second fluid passage defined between the inner circumferential wall of the second sleeve and the outer circumferential wall of the third sleeve; a second discharge opening at the downstream axial end of the fuel injector nozzle, in fluid communication with the second fluid passage; a first vane having a first end coupled to the inner circumferential wall of the first sleeve, and a second end coupled to the outer circumferential wall of the second sleeve; a second vane, circumferentially or axially spaced from the first vane, having a first end coupled to only one of the inner circumferential wall of the first sleeve or the outer circumferential wall of the second sleeve, and a second end in a radially opposed and spaced relationship with the other, non-coupled circumferential wall of the first sleeve or the second sleeve, defining a second vane gap there between; a third vane having a first end coupled to the inner circumferential wall of the second sleeve, and a second end coupled to the outer circumferential wall of the third sleeve; a fourth vane, circumferentially or axially spaced from the third vane, having a first end coupled to only one of the inner circumferential wall of the second sleeve or the outer circumferential wall of the third sleeve, and a second end in a radially opposed and spaced relationship with the other, non-coupled circumferential wall of the second sleeve or the third sleeve, defining a fourth vane gap there between; the first, second and third annular sleeves, and the first, second, third and fourth vanes formed in a monolithic, three-dimensional structure.