Advanced lightwave technology for future undersea cable network, in wh
ich wavelength-division-multiplexing (WDM) plays an important role, is
presented. Ultra-large-capacity transmission on the order of 100 Gb/s
using NRZ-WDM and soliton (or RZ)-WDM as well as flexible, survivable
, and secure networking functions as represented by an optical add-dro
p multiplexing and optical cross-connect are discussed. (C) 1998 Acade
mic Press.