Selex Sistemi Integrati S.p.a.

Selex Es S.p.a.

Anna Maria Fiorello

Massimiliano Dispenza

Mauro Varasi

Aldo Di Carlo

Francesca Brunetti

Giacomo Ulisse

Ferdinando Ricci

Filippo Gemma

Roberta Buttiglione

One or more embodiments of the invention concern a device comprising: a cathode that lies on a cathode plane and includes, in an active region, one or more cathode straight-finger-shaped terminals with a main extension direction parallel to a first reference direction; for each cathode terminal, one or more electron emitters formed on, and in ohmic contact with, said cathode terminal; and a gate electrode that lies on a gate plane parallel to, and spaced apart from, said cathode plane, does not overlap the cathode and includes, in the active region, two or more gate straight-finger-shaped terminals with a main extension direction parallel to the first reference direction; wherein the gate terminals are interlaced with said cathode terminal(s).

Electron-emitting cold cathode device

Disclosed herein is an optical frequency shifter () provided with: an electro-optical substrate () having a main surface (); an optical waveguide structure () formed in the substrate () and having two waveguide portions (), which are spaced apart by a distance (S) such as to ensure mutual optical coupling therebetween; and an electrode structure () arranged above the main surface () of the substrate () and having at least a first electrode (). The substrate () has a Z-cut crystalline structure with Z crystal axis orthogonal to the main surface () and comprises two oppositely poled portions () having opposite orientations of the Z crystal axis; the two waveguide portions () are arranged underneath the first electrode (), each in a respective one of the two oppositely poled portions ().

Electrically driven optical frequency shifter using coupled waveguides

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Rome, Italy

Anna Maria Fiorello