Fast packet and frequency switch

Details Fast packet and frequency switch Fast packet and frequency switch

1990-07-19

1992-03-24

Eisenzopf, Reinhard J.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359117, 359140, H04J 1400

Patent

active

050993470

ABSTRACT:
A fast packet and frequency switch, with inputs and outputs connected to optical fibers, each allowing the transit of a certain number of different-wavelength optical carriers, modulated by serial information flows organized into packets. The packets are phase-realigned and their labels are converted under the control of external processors designed to set-up and break connections. Then a frequency conversion of the optical carriers allotted to packets is carried out and the packets are recombined into a single fiber by a passive recombination network in order to be stored into an optical loop memory, which is an optical fiber delay line. Each optical packet flow is extracted at suitable times, is frequency-converted and, among the various frequencies obtained, there are selected only those to be sent to corresponding output fibers outgoing from the switch, after having been recombined with those of the other converted flows.

REFERENCES:
patent: 4845703 (1989-07-01), Suzuki
Demonstration of Fast Wavelength Tuning for a High Performance Packet Switch; M. S. Goodman, et al., Morristown, NJ 07960-1961.
A Photonic Knockout Switch for High-Speed Packet Networks Kai Y Eng., Apr. 2, 87; AT&T Bell Labs., Holmdel, NJ.
Optical technology Applications to Past Packet Switching, P. Cinato et al., Cselt, Turin, Italy.

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