Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1989-07-25
1991-08-13
Eisenzopf, Reinhard J.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
H04J 1402
Patent
active
050401696
ABSTRACT:
This invention describes a method of transmitting data through a passive central switching fabric, where data can be transmitted from any input port of the fabric to any output port of the fabric. The switching fabric has N multiplexors and N demultiplexors. The input ports of the demultiplexors are the input ports of the fabric, while the output ports of the multiplexors are the output ports of the fabric. The outputs of each demultiplexor lie in a horizontal plane, while the inputs of each multiplexor lie in a vertical plane. The outputs of the demultiplexors in the horizontal planes are butted against the inputs of the multiplexors so as to establish optical contact between the outputs of the demultiplexors and the inputs of the multiplexors. Modulated wavelengths are then demultiplexed and mutliplexed in such a fashion so as to allow data from any input port of the switching fabric to be transmitted to any output port of the switching fabric merely by modulating a corresponding one of N wavelengths.
Guerin Roch A.
Lien Yeong-chang
Beek L. Van
Cameron Douglas W.
Eisenzopf Reinhard J.
International Business Machines - Corporation
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