Optical waveguides – Optical transmission cable – Ribbon cable
Reexamination Certificate
2007-04-24
2007-04-24
Font, Frank G. (Department: 2883)
Optical waveguides
Optical transmission cable
Ribbon cable
C385S128000, C385S141000
Reexamination Certificate
active
11075877
ABSTRACT:
An optical fiber tape having low polarization mode dispersion characteristics and applied to a dense wavelength multiplex (DWDM) transmission system of a transmission rate from several Gb/s to several tens of Gb/S. We have found out that the polarization mode dispersion of an optical fiber tape relates to the loss tangent (tan δ) determined when the dynamic viscoelasticity is measured, and that particularly, if the loss tangent of when a dispersion shift fiber is used is made 0.080 or more and the loss tangent of when a single mode optical fiber is used is made 0.042 or more, the polarization mode coefficient of dispersion (PMD) is reduced to 0.3 ps/√km preferable to realize a DWDM transmission system.
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Mizoguchi Kenichi
Nakajima Yasuo
Okada Mitsunori
Takaishi Norimitsu
Tanaka Hiroki
The Furukawa Electric Co. Ltd.
Wong Eric
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