| 摘要 |
The invention concerns an all-optical converter ( 10 ) for converting an intensity-modulated optical signal into an optical signal modulated to the DPSK format, characterised in that it comprises: a first input ( 152a ) for a first intensity-modulated optical signal ( 12 ); a differential encoding module ( 100 ) adapted to perform a differential encoding between the first signal ( 12 ) and a second optical signal synchronous with the first signal ( 12 ); a device adapted to modulate ( 200 ) adapted to modulate the phase of an optical signal ( 16 ) according to the differential encoding performed by the differential encoding module ( 100 ); an output ( 162c ) of the device adapted to modulate ( 200 ) delivering an optical signal modulated to the DPSK format ( 14 ).
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