Optical waveguides – Optical fiber waveguide with cladding
Reexamination Certificate
2005-11-01
2005-11-01
Kang, Juliana (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
C385S127000
Reexamination Certificate
active
06961500
ABSTRACT:
A DCF adapted to compensate for dispersion and slope of a length of SMF in the C-band window that includes a core surrounded by a cladding layer of refractive index Δc. The core includes at least three radially adjacent segments, a central core segment having a positive Δ1, a moat segment having a negative refractive index Δ2, and a ring segment having a positive refractive index Δ3, wherein Δ1>Δ3>Δc>Δ2. The DCF exhibits a negative Dispersion Slope (DS), where −0.29 (ps
m2·km) at 1546 nm, a dispersion (D), where −100<D<−120 (ps.nm·km) at 1546 nm, and a κ value (D/DS) at 1546 nm that is preferably between 250 and 387 nm. The DCF preferably has a cutoff wavelength (λc) less than 1500 nm, attenuation at 1550 nm of less than 0.6 dB/km, and a bend loss of less than 0.01 dB/m on a 40 mm mandrel at 1550 nm. A transmission link including the combination of a SMF and a DCF having a dispersion (D), where −100<D<−120, is also disclosed.
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Corning Incorporated
Kang Juliana
Wayland Randall S.
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