Optical fiber for wavelength division multiplexing
AssigneeAT&T Bell Laboratories
InventorsAndrew R. Chraplyvy, Robert W. Tkach, Kenneth L. Walker
Life of this patent
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Abstract
Optical fiber including a core and a clad suitable for use in wavelength division multiplex systems. The fiber can have an attenuation at 1550 nm less than 0.25 dB/km, a cut off wavelength of less than 1.40 .mu.m, and a dispersion slope less than 0.15 ps/(nm.sup.2 -km).
Claims11
Article comprising at least one optical fiber suitable, for use in wavelength division multiplex systems, the fiber including a core and a clad, having an attenuation at 1550 nm.ltoreq.than 0.25 dB/km, having a cut off wavelength of less than 1.40 .mu.m and a dispersion slope less than 0.15 ps/(nm.sup.2 -km) characterized in that the absolute magnitude of the average chromatic dispersion at 1550 nm for a fiber length of at least 2.2 km is in the range of 1.5-4ps/nm-km.
Article of claim I in which the fiber is encompassed within a coating.
Dependencies are inferred from the claim text.