Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Reexamination Certificate
2006-01-17
2006-01-17
Healy, Brian (Department: 2883)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing multiple core or cladding
C385S123000, C385S126000
Reexamination Certificate
active
06987918
ABSTRACT:
A dispersion compensation fiber for a moderate dispersion, low slope transmission fiber and transmission system including same. The dispersion compensating fiber has a refractive index profile having a central core with a core delta (Δ1), a moat surrounding the central core having a moat delta (Δ2), and a ring surrounding the moat having a positive ring delta (Δ3). The fiber's refractive index profile is selected to provide total dispersion less than −80 at 1550 nm and less than −90 ps
m/km at 1600 nm, dispersion slope less than −0.18 ps
m2/km at 1550 and less than −0.10 ps
m2/km at 1600 nm/kappa between 250 and 450 at 1550 nm, and a kappa ratio (defined as kappa at 1600 nm/kappa at 1550 nm) of greater than 1.35. The dispersion compensating fiber, when used in a transmission system, may provide low average residual dispersion across the C, L, and C+L bands when such systems include moderate dispersion, low dispersion slope transmission fibers with a total dispersion between 4 and 8 ps
m/km, and a dispersion slope less than 0.025 ps
m2/km at all wavelengths between 1525 and 1625 nm.
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Corning Incorporated
Dupuis Derek L.
Healy Brian
Wayland Randall S.
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