France Telecom

France Telecom Sa

Benjamin Cuenot

Erwan Pincemin

Esther Le Rouzic

Nicolas Brochier

An all-optical converter () for converting an intensity-modulated optical signal into an optical signal modulated to the DPSK format, includes a first input () for a first intensity-modulated optical signal (), a differential encoding module () adapted to perform a differential encoding between the first signal () and a second optical signal synchronous with the first signal (), a device adapted to modulate () the phase of an optical signal () according to the differential encoding performed by the differential encoding module (), and an output () of the device adapted to modulate () delivering an optical signal modulated to the DPSK format ().

All-optical intensity to DPSK converter

The invention relates in particular to an optical regeneration device for a signal carrying an item of information encoded by phase modulation of that signal, that signal being transmitted over an optical network and comprising a temporal succession of optical pulses. The device comprises an optical pulse nonlinear phase shift module, a linear pulse broadening module a linear pulse broadening module, and a module for the linear compensation of the broadening undergone by the pulses in the linear broadening module.

Optical signal regeneration device and corresponding method

The invention relates to a device for regenerating the phase of an optical signal carrying an information encoded by phase modulation of said signal, the device comprising an optical modulation converter for converting the signal carrying the information encoded by phase modulation into at least one secondary signal carrying said information encoded by amplitude modulation, and at least one module for optically regenerating the amplitude of the secondary signal.

Growing community of inventors

Lannion, France

Benjamin Cuenot