2.
    发明专利
    未知

    公开(公告)号:FR2593604B1

    公开(公告)日:1988-03-11

    申请号:FR8601304

    申请日:1986-01-30

    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.

    3.
    发明专利
    未知

    公开(公告)号:DK151733B

    公开(公告)日:1987-12-28

    申请号:DK522978

    申请日:1978-11-23

    Abstract: Fibre-retaining grooves are formed in-between a set of fibre locating pins (M) laid side by side. The pins and a base plane (4) on which they are laid are made of hard, rigid material. Guidance for connection and disconnection is provided by guide pins (G1 to G4) of larger diameter which are therefore robust enough to stand up to handling. The guide pins are in direct contact with the locating pins in order to ensure positional accuracy.

    6.
    发明专利
    未知

    公开(公告)号:CA1097111A

    公开(公告)日:1981-03-10

    申请号:CA315434

    申请日:1978-10-31

    Abstract: Fiche de connecteur fibre à fibre pour câble optique multifibre. Les fibres sontbloquées dans les sillons formés entre des tiges cylindriques de maintien qui sont appuyées sur une surface rigide plane, et qui sont serrées entre des tiges de guidage, du type mâle-femelle, et de butée, de plus grand diamètre. Figure à publier : FIG. n.degree. 3

    8.
    发明专利
    未知

    公开(公告)号:FR2370294A2

    公开(公告)日:1978-06-02

    申请号:FR7633753

    申请日:1976-11-09

    Inventor: TARDY ANDRE

    Abstract: In an optical fibre connector, the optical fibre is accurately positioned by clamping it in the channel formed between three parallel rollers each of which bears tangentially on the other two. If the fibre is of exactly the expected diameter such clamping is firm and precise, but given the variation in fibre diameters that must be accommodated there is a danger of there being excessive fibre play. This connector overcomes the problem of fibre tolerances by inserting resilient means in the said channel. Such resilient means may for example be constituted by a set of three resiliently deformable elastomer rings, one mounted on each rod.

    DISPOSITIF DE MESURE MULTIPOINT A FIBRE OPTIQUE AVEC MULTIPLEXAGE TEMPOREL

    公开(公告)号:CA1270125A

    公开(公告)日:1990-06-12

    申请号:CA538341

    申请日:1987-05-29

    Abstract: : Dispositif de mesure multipoint à fibre optique multiplexage temporel. Vingt capteurs de température se succèdent sur une fibre de mesure. Ils réfléchissent chacun successivement une petite fraction de l'énergie d'une impulsion lumineuse d'interrogation parcourant cette fibre, la valeur de cette fraction permettant de connaître la température. Pour cela ils sont constitués chacun par un intervalle entre deux tronçons successifs (F2, F3) d'une fibre optique, cet intervalle étant rempli d'une colle transparente (36) dont l'indice optique varie avec la température. L'impulsion d'interrogation est renvoyée seulement par le dioptre constitué par la face d'extrémité (38) du tronçon amont (F2) de la fibre.

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