Lucent Technologies Inc.

Gary Patrick Emery

Andrew Roman Chraplyvy

David Kalish

Bernard Raymond Eichenbaum

Raymond Bradfield Kummer

Janice Bilecky Haber

A high-capacity optical fiber network &lsqb;,&rsqb; includes wavelength-division multiplexing (WDM) within the 1.4 micron (&mgr;m) wavelength region (i.e., 1335-1435 nm). Such a system includes optical fiber &lsqb;,&rsqb; whose peak loss in the 1.4 &mgr;m region is less than its loss at 1310 nm. The optical fiber has a zero dispersion wavelength (&lgr;,) at about 1310 nm, and linear dispersion between about 1.5 and 8.0 ps/nm-km within the 1.4 &mgr;m region. At least three WDM channels operate at 10 Gb/s in the 1.4 &mgr;m wavelength region and have a channel separation of 100 GHz. In one illustrative embodiment of the invention, a broadcast television channel, having amplitude modulated vestigial sideband modulation, simultaneously operates in the 1.3 &mgr;m region (i.e., 1285-1335 nm) and/or the 1.55 &mgr;m region (i.e., 1500-1600 nm). In another embodiment of the invention, 16 digital data channels are multiplexed together in the 1.55 &mgr;m region, each channel operating at about 2.5 Gb/s. Raman amplifiers &lsqb;,&rsqb; are used for amplification in the 1.3 &mgr;m and the 1.4 &mgr;m wavelength regions, whereas an Erbium amplifier &lsqb;,&rsqb; is used for amplification in the 1.55 &mgr;m wavelength region.

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Monmouth Beach, NJ, United States of America

Gary Patrick Emery