Optical waveguides – Optical fiber waveguide with cladding – With graded index core or cladding
Reexamination Certificate
2006-02-21
2006-02-21
Font, Frank G. (Department: 2883)
Optical waveguides
Optical fiber waveguide with cladding
With graded index core or cladding
C385S123000, C385S126000, C385S127000
Reexamination Certificate
active
07003203
ABSTRACT:
A dispersion compensating optical fiber for use in a high data rate telecommunications span or link. The dispersion compensating optical fiber in accordance with the invention provides excellent compensation of total dispersion over a range of wavelengths (e.g., 1527–1567 nm), thus minimizing signal distortion in wavelength division multiplexed systems. The dispersion compensating fiber has a refractive index profile with a central core segment having an inner peak with Δi%, an outer peak with Δ1%, and a trough with a Δt% less than both Δi% and Δ1%, a moat segment with a Δ2%, and a ring segment with a Δ3%. Preferably, Δt% and Δ3% are greater than Δ2%. Also disclosed is an optical transmission span having residual dispersion less than +/−25 ps/km for 100 km of transmission fiber over a wavelength band of 1527–1567 nm.
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Corning Incorporated
Font Frank G.
Lepisto Ryan
Wayland Randall S.
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