Device for the phase realignment of ATM cells optical ATM nodes

Details Device for the phase realignment of ATM cells optical ATM nodes Device for the phase realignment of ATM cells optical ATM nodes

1995-03-16

1996-06-11

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359123, 359139, 370 601, H04J 1408

Patent

active

055261566

ABSTRACT:
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.

REFERENCES:
patent: 5105292 (1992-04-01), Le Roy et al.
patent: 5303078 (1994-04-01), Brackett et al.
patent: 5430722 (1995-07-01), Jacob et al.
Optical Computing, Mar. 16-19, 1993, Palm Springs, CA, 1993 Technical Digest Series, vol. 7.

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