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    11.
    发明专利
    未知

    公开(公告)号：FR2593604A1

    公开(公告)日：1987-07-31

    申请号：FR8601304

    申请日：1986-01-30

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： FEVRIER HERVE ,  ROBIEUX JEAN ,  TARDY ANDRE

    IPC: G01L11/00 ,  G01D5/26 ,  G01D21/00 ,  G01K11/20 ,  G01K11/32 ,  G01N21/63 ,  G01N21/64 ,  G01N21/17

    Abstract: The invention relates to a method and to apparatus for remotely measuring the distribution of a physico-chemical parameter in a medium. The method consists in exciting measurement points (20) situated in a medium (17) in succession via an optical fiber (18), with each point (20) being excited by two light pulses of different wavelengths offset from each other in time occurring simultaneously at said point, each measurement point returning radiation at a third wavelength representative of the temperature of the measurement point. The apparatus includes two lasers (3, 4) emitting different wavelengths, a delay circuit (5) for delaying the light pulse from one (4) of the two lasers, and the measurement points include a material sensitive to biphotonic excitation.

    DISPOSITIF DE TELEPHONIE OPTIQUE
    12.
    发明专利
    DISPOSITIF DE TELEPHONIE OPTIQUE 未知

    公开(公告)号：CA1151243A

    公开(公告)日：1983-08-02

    申请号：CA367519

    申请日：1980-12-24

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： ROBIEUX JEAN

    IPC: H04B10/25 ,  H04M1/00 ,  H04Q11/00 ,  H04B9/00

    Abstract: Ce dispositif comporte des fibres optiques reliant des postes d'abonnés p,n à un centre d'inter-connexion optique. A chaque abonné p est affecté une fréquence optique Fp et une fréquence de modulation fp, ces fréquences étant spécifiques de l'abonné. Le poste de chaque abonné p comporte un laser délivrant une onde de fréquence Fp et des moyens pour moduler l'amplitude de cette onde à la fréquence fn affectée à l'abonné n qu'il désire appeler. Application à un dispositf de téléphonie d'un ensemble industriel.

    17.
    发明专利
    未知

    公开(公告)号：FR2614471B1

    公开(公告)日：1989-10-20

    申请号：FR8705907

    申请日：1987-04-27

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： BERNARD JEAN-JACQUES ,  ROBIEUX JEAN

    IPC: H01Q3/26 ,  H04J14/00 ,  H04J14/02 ,  H04J99/00 ,  H01Q3/44 ,  H04B7/00

    Abstract: The antenna includes at least one group of antenna elements (EA1, EA2, . . . , EAp). Microwaves emitted by a central emitter (EH) reach a particular element (EA1 for example) by passing through a controllable phase shifter (VE1), a laser (LE1) which modulates a carrier light signal at a frequency specific to said antenna element with the microwaves, via an optical deflector (FIE) which injects said light signal into an optical waveguide (GE) which is common to all of the antenna elements in the group, via an optical deflector (FPE) which directs said light signal to a detector which is specific to said antenna element (EA1), and which reconstitutes the microwaves, and via a microwave amplifier (AE1) which applies the microwaves to said antenna element. The system is applicable to telecommunications and to radar.

    Data transmission system for vehicles
    18.
    发明专利
    Data transmission system for vehicles 未知

    公开(公告)号：FR2612146A1

    公开(公告)日：1988-09-16

    申请号：FR8703328

    申请日：1987-03-11

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： BERNARD JEAN-JACQUES ,  ROBIEUX JEAN

    IPC: B61L3/22 ,  B61L3/06 ,  B61L1/00 ,  H04B9/00

    Abstract: The invention aims in particular to ensure transmission of a wideband signal to vehicles such as a train 4 moving on a stationary track 22. The signal to be transmitted is injected into a multimode line optical fibre 1 arranged along the track, and fitted with a succession of connection points 2. Each of these points diverts a fraction of the light energy, and forms from it an airborne beam 32, which is received on the vehicle by a mobile coupling member 3. Transmission can also take place from this vehicle. The invention applies in particular to the transmission of television images to urban railway trains.

    OPTICAL COMMUNICATION SYSTEM
    19.
    发明专利
    OPTICAL COMMUNICATION SYSTEM 未知

    公开(公告)号：AU6200286A

    公开(公告)日：1987-03-05

    申请号：AU6200286

    申请日：1986-08-27

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： ROBIEUX JEAN

    IPC: H04B10/12 ,  H04B10/20 ,  H04Q3/52 ,  H04Q11/00 ,  H04Q11/02 ,  H04B9/00

    Abstract: An optical fiber telecommunication device comprises an interconnecting volume and N stations connected to this volume by pairs of transmit and receive optical fibers. Each station comprises a tunable optical frequency laser coupled to the transmit fiber and a heterodyne receiver system coupled to the receive fiber. It is provided with a tunable frequency laser local oscillator. The volume is disposed in a central office comprising a clock to determine different timing periods assigned to the N stations. The carrier frequency of the laser for each station is initially adjusted to a first frequency reserved for modulating ringing signals in the respective channels. The central office comprises a processor connected to the interconnecting volume to receive the ringing signals and designate a carrier frequency for each call request. This frequency is transmitted through the interconnecting volume to the calling station and the called station on a second reserved frequency. This is in order to adjust the frequency of the laser and the frequency of the local oscillator to the designated frequency. The designated frequencies are different for all calls in progress at the same time.

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