An optical switching device the size and costs of which are reduced by decreasing the
number of switching elements and which can flexibly accommodate the expansion of the …

An optical Switching network has: N input couplers each having a cell input port and a
recursive input port, N output couplers each having a cell output port and a recursive output …

An optical packet Switching system in which transmission quality, reliability, and system
management in optical packet Switching control are improved. An optical packet Switch …

An optical switch for routing optical signals is disclosed. The optical switch has an optical
signal path for routing said optical signals between at least a first port and at least a second …

An optical switching system is implemented by providing a transmitting section With a
preparatory transmitted optical signal selector and a Working transmitted optical signal …

The packet switching apparatus comprises input buffers for respective input ports; a space
division optical switch for transferring packets from the input buffers to a desired output port; …

Caccuro (57) ABSTRACT An optical packet switch which receives data packets and
switches those data packets in the optical domain without using recirculation devices is …

A switch for an optical transmission network using wavelength division multiplexing has p1
input ports receiving p1 wavelengths and first switching means for switching the p1 …

The present invention relates to a multi-stage non-blocking optical switch matrix having
failure protection. The optical switch includes failure protection in the form of a capacity to …

It is therefore an object of the present invention to provide an optical Switch circuit network
needing only two stages of optical matrix Switches. It is another object of the present …