Patent ID: 8520278

Claim:
An optical logic gate ( 1 ) comprising a generator element ( 15 ) configured to receive a first and a second optical input signal (s i1 ,s i2 ) respectively having a first and a second angular frequency (ω 1 ,ω 2 ) and respectively having a first and a second polarization (P;S), and to provide a sum optical signal (s u3 ) having a third angular frequency (2ω i ,ω 1 +ω 2 ) and a third polarization (P;S), said third angular frequency (2ω i , ω 1 +ω 2 ) being equal to the sum of said first and second angular frequency (ω 1 ,ω 2 ), said third polarization being a function of said first and second polarizations, said generator element ( 15 ) comprising a generator layer ( 22 ) in a material having a non-null second-order optical tensor; characterized in that logic states are associated to said first, second and third polarizations.