公开(公告)号：US09942632B2

公开(公告)日：2018-04-10

申请号：US15338249

申请日：2016-10-28

Applicant: THALES

Inventor： Muriel Aveline ,  Benoit Benazet ,  Michel Sotom

IPC: H04B10/00 ,  H04Q11/00 ,  H04B10/118

CPC classification number: H04Q11/0005 ,  H04B10/118 ,  H04B10/90 ,  H04B2210/006 ,  H04Q11/0001 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0058

Abstract: A photonic radiofrequency signal cross-connect and frequency conversion device comprises: electronic/optical converters, for transferring radiofrequency input signals to optical carriers; optical combiners for grouping together in one and the same optical path several optical signals generated by the electronic/optical converters; electro-optical modulators for mixing the optical signals being propagated in a same optical path with a respective radiofrequency carrier; optical splitters for splitting the optical signals at the output of the modulators; optical combiners for grouping together the optical signals deriving from different optical paths; and optical/electronic converters, associated with these optical combiners. A space-borne telecommunications payload comprising such a photonic device is also provided.

公开(公告)号：US10979149B2

公开(公告)日：2021-04-13

申请号：US16706503

申请日：2019-12-06

Applicant: THALES

Inventor： Jérôme Bourderionnet ,  Arnaud Brignon ,  Arnaud Le Kernec ,  Michel Sotom ,  Anaëlle Maho

IPC: H04B10/61 ,  H04B10/11 ,  H04B10/2513 ,  H04B10/2581 ,  H04J14/02

Abstract: An elementary device for coherently recombining a first elementary beam and a second elementary beam, includes a first input and a second input, into which are respectively injected the first elementary beam and the second elementary beam to be recombined, an output that delivers an output beam corresponding to the coherent recombination of the first and second elementary beams, a delay line placed on one of the paths of said elementary beams and configured to induce a variable delay on said path, a variable coupler comprising a first 2×2 combiner, a phase modulator and a second 2×2 combiner, a control detector configured to generate, from the complementary beam, an error signal (ε), a feedback loop configured to determine, from the error signal, the delay and the phase difference to be applied.

公开(公告)号：US10951322B2

公开(公告)日：2021-03-16

申请号：US16288013

申请日：2019-02-27

Applicant: THALES

Inventor： Benoit Benazet ,  Michel Sotom ,  Muriel Aveline

IPC: H04B10/548 ,  G02F1/21 ,  H04B10/118 ,  H04Q11/00 ,  G02F2/00

Abstract: A photonic frequency converter includes an electro-optical intensity modulator having an optical input, one optical output and at least one RF input for receiving two modulation radiofrequency signals at different frequencies; a set of optical sources that are configured to generate optical signals at at least two different wavelengths, the signals being modulated by respective local-oscillator signals at least two of which have different frequencies; and an optical multiplexer arranged to multiplex the optical signals and to inject them into the optical input of the modulator. A method for converting frequency by means of such a converter is also provided.

公开(公告)号：US11444693B2

公开(公告)日：2022-09-13

申请号：US17121508

申请日：2020-12-14

Applicant: THALES

Inventor： Anaëlle Maho ,  Michel Sotom ,  Alexandre Delga ,  Mickaël Faugeron

IPC: H04B10/118

Abstract: A free space optical FSO space data transmission system includes a first ground or aeronautical optical terminal, a second optical terminal housed on board a satellite, and a relay platform. The relay platform is configured so as to move at an altitude higher than that of clouds and atmospheric turbulence, so as to receive the data transmitted by the first terminal in the MWIR/LWIR domain of long wave infrared LWIR wavelengths and/or medium wave infrared MWIR wavelengths, and retransmit the received data to the second terminal in the domain of short wave infrared SWIR wavelengths, and/or receive the data transmitted by the second terminal in the domain of short wave infrared SWIR wavelengths, and retransmit the received data to the first terminal in the MWIR/LWIR domain of long wave infrared LWIR wavelengths and/or medium wave infrared MWIR wavelengths.

公开(公告)号：US10003400B2

公开(公告)日：2018-06-19

申请号：US15586862

申请日：2017-05-04

Applicant: THALES

Inventor： Michel Sotom ,  Arnaud Le Kernec ,  Agnès Francastel ,  Dominique Potuaud ,  Gilles Fernandez

IPC: H04B10/00 ,  H04B7/185 ,  H04B10/29 ,  H04B10/40

CPC classification number: H04B7/18521 ,  H04B7/18513 ,  H04B10/118 ,  H04B10/29 ,  H04B10/40

Abstract: An inter-satellite communication device for satellites orbiting within a constellation of satellites comprises at least one optical terminal dedicated to intra-orbital plane communication links and at least one optical terminal dedicated to inter-orbital plane communication links, each optical terminal dedicated to intra-orbital plane communications configured to transmit and receive optical signals with an optical terminal of an identical satellite orbiting in the same orbital plane, each optical terminal dedicated to inter-orbital plane communications configured to transmit and receive optical signals with an optical terminal of an identical satellite in an orbital plane adjacent over the entirety of its orbit in its orbital plane and each optical terminal dedicated to inter-orbital plane communications having a field of regard such that the half-angle at the vertex of the latter is larger than the maximum value of the azimuthal angle over a revolution around the Earth.

公开(公告)号：US09967047B2

公开(公告)日：2018-05-08

申请号：US14297469

申请日：2014-06-05

Applicant: THALES

Inventor： Arnaud Le Kernec ,  Mathieu Dervin ,  Michel Sotom

IPC: H04J14/02 ,  H04B10/112 ,  H04B10/118 ,  H04B10/2575 ,  H04B10/29

CPC classification number: H04J14/02 ,  H04B10/112 ,  H04B10/118 ,  H04B10/25752 ,  H04B10/29

Abstract: A method for transmitting digital data by a primary optical signal between a transmitter terminal and a receiver terminal, involves the following steps: determining a magnitude characterizing optical-wave degradation between the transmitter terminal and the receiver terminal, determining a number of transmission channels by a decreasing function of the magnitude characterizing optical-wave degradation, distributing the digital data over the transmission channels, modulating optical signals of different wavelengths using digital data distributed over the transmission channels, generating the primary optical signal by wavelength multiplexing of the optical signals, and sending a transmission configuration, including at least the number of transmission channels, from the transmitter terminal to the receiver terminal.

公开(公告)号：US09748648B2

公开(公告)日：2017-08-29

申请号：US14261965

申请日：2014-04-25

Applicant: THALES

Inventor： Gerard Caille ,  Michel Sotom

IPC: H01Q3/00 ,  H01Q3/40 ,  H01Q3/26

CPC classification number: H01Q3/40 ,  H01Q3/2676

Abstract: A distributed feeding device for antenna beamforming comprises a first distributed feeding circuit comprising P inputs and N outputs, for producing a signal on each of its outputs with a phase shift which is substantially constant between two adjacent outputs, at least one frequency multiplexer connected to at least one input of the said first circuit, a number N of frequency demultiplexers each connected, by their input, to an output of the first circuit and a second distributed feeding means comprising a plurality of inputs, each connected to an output of one of the frequency demultiplexers, and a plurality of outputs, the second distributed feeding means comprising at least one second distributed feeding circuit comprising Q inputs and M outputs, for producing a signal on each output with a phase shift which is substantially constant between two adjacent outputs, the integers P, N, Q and M being equal or distinct.

公开(公告)号：US09651738B2

公开(公告)日：2017-05-16

申请号：US14262143

申请日：2014-04-25

Applicant: THALES ,  DAS PHOTONICS S.L.

Inventor： Gerard Caille ,  Michel Sotom ,  Miguel Angel Piqueras Ruiperez ,  Teresa Mengual Chulia

IPC: H01Q3/26 ,  G02B6/28 ,  G02B6/293 ,  H01Q3/00 ,  G02B6/00

CPC classification number: G02B6/28 ,  G02B6/29386 ,  H01Q3/2676

Abstract: A distributed feeding circuit for antenna beamforming array comprises a plurality N of inputs and a plurality N of outputs, wherein the said circuit is adapted for receiving, on at least one input, an electrical signal at a microwave frequency, modulated on at least one optical carrier, the circuit comprising at least one assembly of at least two optical dividers, two delay lines of length zero or substantially equal to a fraction of the wavelength of the signal at its microwave frequency and two means for combining two optical signals, the assembly being arranged and the delay lines being configured so that the theoretical transfer function of the circuit is an orthogonal matrix.