Optical ATM self-routing switching system with reduced routing h

Details Optical ATM self-routing switching system with reduced routing h Optical ATM self-routing switching system with reduced routing h

1992-11-30

1995-07-11

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359128, 359139, H04J 1400

Patent

active

054326273

ABSTRACT:
In an optical ATM switching system, an optical ATM cell is produced in response to an incoming ATM cell so that it contains an optical routing bit in a timeslot corresponding to the destination of the cell. A first switching stage is provided for routing the cell from one of its inlets to one of its outlets in accordance with the routing bit contained in the cell and generating a routing signal indicative of the position of the outlet to which the cell is routed. A second switching stage is connected to the outlets of the first switching stage for routing the cell to one of optical buffers in response to the routing signal from the first switching stage. Optical combiners are provided, each corresponding to a group of the optical buffers for combining outputs of the corresponding group of optical combiners.

REFERENCES:
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Patent Abstracts of Japan, Abstract of JP-A 3-220836.
Suzuki et al., "Photonic . . . VSTEP Two-Dimensional Array", Photonic Switching, 1991 Tech. Dig. Ser., cosponsored by Opt. Soc. of America & IEEE/Lasers & Electro-Optics Soc., Mar. 1991, Salt Lake City, Utah.
Nishio et al., "Photonic ATM Switch Using Vertical . . . Electro-Photonic Devices (VSTEPs)", Proceedings vol. 2, XIV International Switching Symposium, Oct. 25-30, 1992, Yokohama, Japan.
Lee, Tony, T., "Nonblocking Copy Networks for Multicast Packet Switching," IEEE Journal on Selected Areas in Communication, vol. 6, No. 89, Dec., 1988, pp. 1455-1467.

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