Abstract: An electric-optic modulator includes a block of crystal having electro-optic properties, the block extending lengthways along a long axis and having a light guide which extends between a light guide input and a light guide output. An electric modulation signal acts on an interaction zone of the block via coplanar electrodes together with the light guide via a dielectric layer. The electrodes are disposed on a main long face of the block and the interaction zone is elongated more or less along the long axis. The light to be modulated arrives through an input optical fiber which is connected to the light guide at the light guide input on a first face of the block. The modulated light leaves the modulator through an output optical fiber connected to the light guide output on a second face of the block. The first face and the second face are one single face (D) which is parallel to the long axis.

Abstract: An optical modulator includes a waveguide structure forming a two-wave interferometer made of an electro-optical material, and two arms, a set of electrodes connected to a controllable electric source for applying an electric field on at least one of the arms of the interferometer, so as to vary the phase difference between light waves along one or the other of the two arms. The modulator includes two sets of electrodes placed respectively on each of the interferometer arms, one in the non-reversed region of the electro-optical material, the other in the reversed region, and a delay line placed between the control electronics of the electrode sets introducing a delay equal to the light propagation time in the first electrode set.

Abstract: The invention relates to an electric-optic modulator comprising a block (1) of crystal having electro-optic properties, said block extending lengthways along a long axis and comprising a light guide (4) which extends between a light guide input and a light guide output. An electric modulation signal acts on an interaction zone of the block by means of coplanar electrodes (5) together with the light guide through the intermediary of a dielectric layer. Said electrodes are disposed on a main long face of the block and the interaction zone is elongated more or less along the long axis. The light to be modulated arrives through an input optical fiber (2′) which is connected to the light guide at the light guide input on a first face of the block. The modulated light leaves the modulator through an output optical fiber (2″) which is connected to the light guide at the light guide output on a second face of the block.

Abstract: An optical modulator includes a waveguide structure forming a two-wave interferometer made of an electro-optical material, and two arms, a set of electrodes connected to a controllable electric source for applying an electric field on at least one of the arms of the interferometer, so as to vary the phase difference between light waves along one or the other of the two arms. The modulator includes two sets of electrodes placed respectively on each of the interferometer arms, one in the non-reversed region of the electro-optical material, the other in the reversed region, and a delay line placed between the control electronics of the electrode sets introducing a delay equal to the light propagation time in the first electrode set.

Abstract: A miniature optical component formed by the mounting of an integrated optic circuit chip has waveguides on a motherboard for connection with optic fibers. The fibers are positioned and aligned in parallel grooves hollowed out in the motherboard. The surface of the motherboard is hollowed out with female microstructures in the shape of axial buttonholes with sub-millimetrical dimensions, and the face of the chip has projecting male microstructures formed by metal deposition, capable of fitting into and sliding axially in the female microstructures during the mounting of the component. There is also provided a method for mounting a miniature component of this kind and a method for the matrix-based manufacture of a motherboard and a matrix device.