Even dark pulses,[#KA##1###,#WA##1###] which are symmetric functions of time
centered around the pulse, can be simply generated by driving
the MZI with a short electric pulse. ...
If we define the amplitudes of the secondary soliton pairs as
#math235#
κn = κ0 - Δn,
(9)
then the nth order secondary pulse shape (n = 1, 2, 3, ...)
has the form