DISPERSION CORRECTION FIBER, TRANSMISSION SYSTEM AND METHOD OF OPERATING SAME

摘要

A dispersion correction optical fiber (20) includes a segmented core (21) having a central core segment (22), a moat segment (24) and, preferably, a ring segment (26 ). The refractive index profile is selected to provide a total dispersion minimum which is located within an operating wavelength band (50) of the fiber (20). Most preferably, the dispersion value at the minimum(49) is more negative than -400 ps/nm/km and greater than -1200 ps/nm/km at 1550 nm. Optical transmission systems including the present invention dispersion correction optical fiber (20) optic ally coupled to various transmission fibers (36) and dispersion compensating fibers (18) are also disclosed, as is a method of operating the dispersion correction fiber(20) wherein the minimum (49) is located within the desired operating wavelength band (50).