Patent ID: 6975801

Claim:
A dispersion compensation fiber, comprising: a refractive index profile including a central core having a positive core delta (Δ 1 ) less than 1.8%, a moat surrounding the central core having a negative moat delta (Δ 2 ) greater than −0.9%, and a ring surrounding the moat having a positive ring delta (Δ 3 ), the refractive index profile selected to provide a total dispersion less than −40 and greater than −87 ps/nm/km at 1550 nm; and a kappa value defined as the total dispersion at 1550 nm divided by the dispersion slope at 1550 nm of greater than 165 and less than 270 nm. effective area of greater than 18 square microns at 1550 nm; and pin array bend loss of less than 8 dB at 1550 nm.