A method and apparatus for remodulating an optical data stream such that a
second modulated data stream is optically transported along with a first
modulated data stream. In one embodiment, an optical signal having
modulated thereon a first data stream is split into a plurality of
reduced power optical signals, wherein at least one of the reduced power
optical signals is remodulated to additionally include a second data
stream. The first data stream is preferably Manchester encoded, the data
rate of the second data stream is preferably one half the data rate of
the first data stream.