Patent ID: 8824900
Filing Date: 2014-09-02
Classification: G02F,H04B,H04L

Abstract:
1. A device for modulating an optical carrier field with a single sideband signal, the device comprising: an optical input for an optical carrier signal; an optical output for a modulated optical output signal; a first optical splitter arranged to split the optical carrier signal into a first component signal and a second component signal; a first reflection modulator arranged to intensity modulate the first component signal with only a first electrical signal; a second reflection modulator arranged to intensity modulate only the second component signal with only a second electrical signal, the second electrical signal corresponding to the first electrical signal with a relative phase delay of +/−π/2 radians; a first optical combiner arranged to recombine the modulated first component signal and the modulated second component signal to produce an optical output signal; and a first phase delay arranged to apply a phase delay of +/−π/2 radians to one of the component signals before the component signals are recombined by the first optical combiner; wherein the first optical splitter and the first optical combiner are disposed in a first coupler.