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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsDaivid FOWLER, Thomas MANG, Basile MEYNARD
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The invention relates to a photonic circuit for attenuating the amplitude of an optical signal, comprising a Mach-Zehnder interferometer for coupling an input waveguide (14) and an output waveguide (15), said interferometer comprising a modulation section (SM1) which includes a first waveguide (11), a second waveguide (12) and a phase shifter (13) configured to introduce a phase difference between a first optical signal circulating on the first waveguide and a second optical signal circulating on the second waveguide. The first and second waveguides are arranged in two distinct parallel layers and the phase shifter is a thermo-optical phase shifter arranged to preferentially act on one of the first and second waveguides.
A photonic circuit for variably attenuating the amplitude of an optical signal, comprising a Mach-Zehnder interferometer for coupling an input waveguide and an output waveguide, said Mach-Zehnder interferometer comprising a modulation section which includes a first waveguide, a second waveguide and a phase shifter configured to introduce a phase difference between a first optical signal circulating on the first waveguide and a second optical signal circulating on the second waveguide, wherein the first and second waveguides are arranged in two distinct parallel layers and wherein the phase shifter is a thermo-optical phase shifter arranged to preferentially act on one of the first and second waveguides.
Dependencies are inferred from the claim text.