Pirelli & C. S. P. A.

Corning O.t.i. Inc.

Corning Photonic Technologies Inc.

Achille Pattavina

Guido Alberto Maier

Mario Martinelli

Lorenzo Ghioni

Simone De Patre

A tool for static or dynamic planning of a WDM network with dedicated protection. The WDM network is represented by a layered graph having image nodes for each node of the network and horizontal arcs for each link of the network, so as to replicate in each layer the topology of the network. A Bhandari algorithm is adapted for finding on the layered graph a working-spare pair of lightpaths for each connection request to be allocated.

Method for planning or provisioning data transport networks

Optical device for processing a sequence of bits

An optical device comprises an input for an input optical impulse and an optical beam splitting element for supplying, from the input optical impulse, a first pair and a second pair of optical impulses. Also included is a first optical delay element to delay, by a predetermined time, at least one of the first pair of optical impulses and a second optical delay element to delay, by a predetermined time, at least one of the second pair of optical impulses. A first optical processing element supplies a first output optical signal to a first output when commanded by the first pair of optical impulses and a second optical processing element supplies a second output optical signal to a second output when commanded by the second pair of optical impulses.

Optical device for processing an optical impulse

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Milan, Italy

Achille Pattavina