Light SSB modulators for dense transmission systems

SSB digital modulation is considered to be an important candidate to break through into 0.8 pbs/Hz for long hauls. Unwanted nonlinearity effects during transmission will be reduced because the carrier component is also eliminated by the modulation. The introduction of SSB scheme is a starting point to go into the synchronous detection instead of present IM-DD systems. Details of our SSB modulator is also be shown and discussed will be possible system applications of SSB modulation.