MICROWAVE-TO-OPTICAL PHOTON TRANSDUCER

A microwave-to-optical photon transducer (1) is provided for generating coupling between a microwave signal (Sin2) and an optical signal (Spi_in1, Spi_out1). The transducer (1) comprises: a first input port (3); a second input port (5); a first output port (9) for outputting the optical signal (Spi_out1) and one or more optical sideband signals (Sout1, Sout11, Sout12); a first waveguide (13) disposed between the first input port (3) and the first output port (9) to allow the optical signal (Spi_in1) and the one or more optical sideband signals (Sout1, Sout11, Sout12) to propagate in the first waveguide (13); a second waveguide (15) connected to the second input port (5), and extending in the transducer (1) adjacent to the first waveguide (13) to allow the microwave signal (Sin2) to propagate in the second waveguide (15); a phase-matching arrangement to cause at least the optical signal (Spi_in1) and the microwave signal (Sin2) to be phase-matched or quasi-phase-matched. The first waveguide (13) is made of or comprising non-linear material such that a first electromagnetic field generated by the optical signal (Spi_in1) in the first waveguide (13) and a second electromagnetic field generated by the microwave signal (Sin2) in the second waveguide (15) are arranged to interact in the non-linear material, and wherein the transducer is configured to use travelling waves for mixing the microwave signal and the optical signal to allow the one or more optical sideband signals (Sout1, Sout11, Sout12) to be sensed at the first output port (9) to allow the power of the microwave signal at the second input port to be determined based on the sensed one or more sideband signals. Il est prévu un transducteur hyperfréquence/optique à photons (1) destiné à générer un accouplement entre un signal hyperfréquence (Sin2) et un signal optique (Spi_in1, Spi_out1). Le transducteur (1) comprend : un premier port d'entrée (3) ; un second port d'entrée (5) ; un premier port de sortie (9) pour délivrer le signal optique (Spi_out1) et un ou plusieurs signaux optiques de bande latérale (Sout1, Sout11, Sout12) ; un premier guide d'ondes (13) placé entre le premier port d'entrée (3) et le premier port de sortie (9) pour permettre au signal optique (Spi_in1) et au ou aux signaux optiques de bande latérale (Sout1, Sout11, Sout12) de se propager dans le premier guide d'ondes (13) ; un second guide d'ondes (15) connecté au second port d'entrée (5) et s'étendant dans le transducteur (1) adjac