Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Reexamination Certificate
2007-08-07
2007-08-07
Pak, Sung (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing multiple core or cladding
C385S126000
Reexamination Certificate
active
11593272
ABSTRACT:
An optical waveguide fiber having a multi-segmented core surrounded by a cladding, the core having a central segment and an annular segment surrounding the central segment. The central segment has a positive relative refractive index profile, and the annular segment has a negative relative refractive index profile. The optical fiber exhibits an effective area of greater than about 75 μm2at a wavelength of about 1550 nm, a dispersion slope of less than 0.07 ps
m2/km at a wavelength of about 1550 nm, a zero-dispersion wavelength of between about 1290 and 1330 nm, and an attenuation of less than 0.20 dB/km, and preferably less than 0.19 dB/km, at a wavelength of about 1550 nm.
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Corning Incorporated
Homa Joseph M.
Pak Sung
Petkovsek Daniel
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