Passive optical telecommunication system for narrow band and bro

Details Passive optical telecommunication system for narrow band and bro Passive optical telecommunication system for narrow band and bro

1991-04-24

1995-03-14

Goldstein, Herbert

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359167, 370 953, H04J 1408

Patent

active

053981294

ABSTRACT:
In a passive optical telecommunication system in which the signal transmission from a switching center downstream to remote units proceeds in a first stream on a time-division multiplex basis and in which the signal transmission from the remote units upstream to the central switching center proceeds in accordance with a TDMA method in accordance wherewith a remote unit transmits each burst in a synchronized fashion with the assistance of a delay device that is individually set with respect to each remote unit proceeding from the switching center, the remote unit already transmits the bursts before the transmission time required for a desired reception phase relation of the burst in the central switching center only after a rough delay time of a whole system clock period (or system clock periods), and the switching center centrally undertakes a respective individually-dimensioned fine delay of the bursts incoming thereat from each of the remote units into the desired reception phase relation.

REFERENCES:
patent: 4644534 (1987-02-01), Sperlich
patent: 4726010 (1988-02-01), Ali et al.
patent: 4748621 (1988-05-01), Ballance et al.
patent: 4790616 (1988-12-01), Frenkel
Oakley et al., "Passive Fibre Local Loop for Telephony with Broadband Upgrade," JSSLS '88 Conf. Papers, pp. 0179-0183.
Hoppitt et al., "The provision of telephony over passive optical networks," Br. Telcom Technol. J., vol. 7, No. 2, 1989, pp. 100-113.

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