Cselt-centro Studi E Laboratori Telecomunicazioni S.p.a.

Libero Zucchelli

Bruno Bostica

Paola Cinato

The device for the phase realignment of ATM cells in an optical ATM switching node is associated with each input line (Fe) of node and includes a circuit for recognizing the beginning of a cell, a circuit for evaluating the time shift between of a cell and a reference instant and for generating an error signal (ER) depending on the amount of time difference, and a delay line for compensating the time difference, driven by the error signal (ER). The time difference compensator means includes a logarithmic optical delay line that is connected upstream of the device for recognizing the beginning of a cell and for evaluating the amount of the time difference.

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Mantova, Italy

Libero Zucchelli