| 摘要 |
The invention provides a time-division demultiplexer apparatus for an optical signal, the apparatus comprising a first coupler (3) which splits the optical signal for demultiplexing into two signals propagating in two different branches (4, 5) of the apparatus, and a second coupler (6) which reunites the signals from the two branches (4, 5), the apparatus being characterized in that one of the branches (5) includes processor means (51-55) for producing a signal at the inlet of the second coupler (6) in the form of light pulses having a repetition rate that is a function of the signal that is to be obtained at the output from the apparatus, said pulses being slightly early relative to the signal which is to be demultiplexed; and in that the intensity of the light pulses is suitable for saturating an absorber medium (7) extending after the second coupler.
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