Abstract: An optical device for wavelength interleaving or dissociation includes a device for coupling a luminous flux generated by a source in an input fiber, a circulator linked to the input fiber and to an output fiber forming a first output gate of the optical device, and a polarisation beam splitter receiving the luminous flux coming out of the circulator and separating it into two components. A device is provided for transferring the luminous flux from one output to the other, a birefringent medium is interposed on the optical path and a fiber forms a second output of the optical device.

Abstract: The invention concerns an antennae device (30) for reading electronic labels (2), characterised in that the antennae (30) are passive antennae arranged in the form of an array (3) comprising L lines and C columns and located in accordance with said array (3) by co-ordinates (i, j), i ranging from 1 to L, j ranging from 1 to C and each antenna (ij) is controlled by two control means (31i, 32j), one controlling said antennae (30) located on the line i, the other controlling said antennae (30) located on the column j.

Abstract: This invention relates to an optic multiplexer or demultiplexer comprising an inlet optic fibre, a wavelength dispersive optic system, outlet optic fibres and a two-wave interferometer. The two-wave interferometer has a spectral response exhibiting minima at twice the frequency of the response of the multiplexer or demultiplexer.

Abstract: An electronic module (6) suitable for producing contactless cards (1) and/or contactless electronic labels, and comprising a carrier (10) for an electronic microcircuit (7) connectable to an antenna (2) to enable contactless operation of the module (6). The whole of the antenna (2) is arranged on the electronic module (6) and the turns lie in the plane of the carrier substrate (10). Said electronic module (6) is useful for producing contactless cards and electronic labels.

Abstract: The invention concerns an optical device for wavelength interleaving or dissociation (1) comprising means for coupling (4) a luminous flux generated by a source (3) in an input fiber (2), a circulator (5) linked to this input fiber (2) and to an output fiber (7) forming a first output gate of the optical device (1), a polarisation beam splitter (9) receiving the luminous flux coming out of the circulator (5) and separating it into two components (r1) and (r2). It also comprises means for transferring (14) the luminous flux from one output to the other, a birefringent medium (15) interposed on the optical path and a fiber (16) forming a second output of the optical device (1).

Abstract: Multiwavelength laser source transmitting a luminous flux including as many amplifier wave-guides as potential transmission wavelengths, a collimation optic system for collimating the beams transmitted by the wave-guides, a network and a retroreflector making up the network, a dispersive retroreflecting device that defines with each wave-guide, an external resonating cavity, whereas each wave-guide has an inner face and an outer face with respect to its associated cavity. A Fabry-Perot interferometer with reduced fine adjustment is placed in the cavity between the collimation optic system and the network, whereby the interferometer is tilted with respect to the axis of the cavity and forms a little selective filter, whose variation law of the wavelength transmitted in relation to the angle of incidence is identical with that of the dispersive retroreflecting device.

Abstract: The invention relates to the methods which make it possible to establish contacts between two conductive layers separated by an insulating layer. It consists in pressing the complex (101) formed by these three layers between a sonotrode (105) excited by ultrasound perpendicular to the plane of the complex and an anvil (106) whose face in contact with the complex has protruding ridges (107). Under the effect of the pressure and the ultrasound, the ridges deform the complex and make the insulating layer flow. When the conductive layers come into contact, after contraction of the insulating layer, they become welded to one another under the effect of the ultrasound. It makes it possible to obtain, at low cost, completely ohmic contacts between these two conductive layers.

Abstract: An electronic chip device includes an interface support film having a support film and at least one flat conductive interface placed on the support film, as well as a microcircuit connected to the interface. The interface support film possesses such properties that it can be creased or folded on itself without deterioration. The support film possesses a thickness of less than 75 &mgr;m, the best results being obtained with a thickness of between 10 &mgr;m and 30 &mgr;m. Preferably the support film is selected from among polypropylene (PP), polyethylene (PE), polyethylene teraphtalate (PET). In one embodiment, the device includes a compensation film placed on the support film. The compensation film has a recess containing the microcircuit and its connections. The recess can contain a material to encapsulate the microcircuit and its connections.

Abstract: A clasp for bracelet comprising a body whereof one of the sides is fixed to or integral with one of the ends of the bracelet and whereof the opposite side comprises a retaining element cooperating with a coupling member comprised by the other end of the bracelet. A cover is articulated on the clasp body so that it can move relative to the clasp body transversely with respect thereto and to the axis of the bracelet and pivot about a hinge pin parallel to the axis of the bracelet.

Abstract: An electronic chip device includes an interface support film having a support film and at least one flat conductive interface placed on the support film, as well as a microcircuit connected to the interface. The interface support film possesses such properties that it can be creased or folded on itself without deterioration. The support film possesses a thickness of less than 75 &mgr;m, the best results being obtained with a thickness of between 10 &mgr;m and 30 &mgr;m. Preferably the support film is selected from among polypropylene (PP), polyethylene (PE), polyethylene teraphtalate (PET). In one embodiment, the device includes a compensation film placed on the support film. The compensation film has a recess containing the microcircuit and its connections. The recess can contain a material to encapsulate the microcircuit and its connections.

Abstract: An electronic module (6) suitable for producing contactless cards (1) and/or contactless electronic labels, and comprising a carrier (10) for an electronic microcircuit (7) connectable to an antenna (2) to enable contactless operation of the module (6). The whole of the antenna (2) is arranged on the electronic module (6) and the turns lie in the plane of the carrier substrate (10). Said electronic module (6) is useful for producing contactless cards and electronic labels.

Abstract: This invention relates to an optic multiplexer or demultiplexer comprising an inlet optic fiber, a wavelength dispersive optic system, outlet optic fibers and a two-wave interferometer.

Abstract: The present invention relates to an optical fiber wavelength multiplexing or demultiplexing device comprising: An optical fiber wavelength multiplexing device comprising: an array of input single-mode fibers (101 to 105) designed for carrying light beams at different wavelengths (&lgr;1, &lgr;2, &lgr;2, . . .

Abstract: The invention relates to an external cavity, continuously tunable monomode laser source, comprising, in a resonant cavity, resonating at the emission wavelength &lgr;e, a retroreflecting wavelength dispersing device, arranged to produce a selectivity curve with a peak 80 s. According to the invention, additional fine-control means, enable, from the approximate continuous tunability position, to monitor the deviation &lgr;e-&lgr;s during the variation of the emission wavelength ke while preventing this deviation from reaching one of the limits causing mode hopping. Such a configuration enables to avoid imperfections usually associated with mechanical adjustment and to guarantee continuity of the wavelength variation and to compensate for the latter as long as its fluctuations remain smaller than approx. &Dgr;&lgr;e/2 where &Dgr;&lgr;e is the distance between two successive resonance modes of the cavity.

Abstract: The invention relates to a sound transducer in fluoride polyvinylidene (FPVD), its process of manufacture and integration into a card producing acoustic signals transmittable by telephone route. The process is chiefly characterized in that it consists of making (10) dual surface metallization strips distributed over the entire width of a ribbon in FPVD of great length and of very narrow thickness, cutting (11) each metallization strip into a unit film, fixing (12) a portion of film onto a pre-determined site of an interconnection array made on the rear surface of the card, cutting away excess film, then placing the film portion under stress (13), in such manner that it may emit acoustic signals when voltage is applied to it. This process is highly useful for the manufacture of acoustic signal producing cards of very narrow thickness and low cost price.

Abstract: An optical wave-guide wavelength multiplexing device comprising: an array of input single-mode wave-guides designed for carrying light beams at different wavelengths (&lgr;1, &lgr;2, . . . , &lgr;n), an output single-mode wave-guide designed for carrying the whole set of such light beams, a dispersing system receiving light beams from the input wave-guides in an end plane and generating superimposed light beams designed for the output wave-guide in an output plane, a collimating lens which produces collimated beams from the input wave-guides whose respective central axes are converging to be superposed on the rear reflector of the dispersing system, a refracting prism located between the dispersing system and the collimating lens. A polarization splitter can also be placed between the output single-mode wave-guides array and the grating. The demultiplexer comprises the same elements, whereas the roles of the input/output wave-guides and planes are reversed.

Abstract: A thin integrated circuit card with an improved manually activated switch. The card is of the type that has two external plates, a lower one (12) and an upper one (14) that are separated by at least one interconnecting plate in which there is at least one switch (26). The switch is able to allow or inhibit the passage of an electric current between its two terminals (34). The switch has a pushbutton (28) which is positioned at a peripheral edge (40) of the card.

Abstract: The subject of the invention is a process for manufacturing ferritic stainless steel strip, in which a strip of a ferritic stainless steel, of the type containing at most 0.12% of carbon, at most 1% of manganese, at most 1% of silicon, at most 0.040% of phosphorus, at most 0.030% of sulfur and between 16 and 18% of chromium, is solidified, directly from liquid metal, between two close-together, internally-cooled, counterrotating rolls with horizontal axes, wherein said strip is then cooled or left to cool so as to avoid making it remain within the austenite to ferrite and carbides transformation range, wherein said strip is coiled at a temperature of between 600.degree. C. and the martensitic transformation temperature Ms, wherein the coiled strip is left to cool at a maximum rate of 300.degree. C./h down to a temperature of between 200.degree. C. and ambient temperature and wherein said strip then undergoes box annealing.

Abstract: The present invention relates to an optical fiber wavelength multiplexing or demultiplexing device comprising.The multiplexer comprises input fibers (101 to 105) designed for carrying luminous beams at different wavelengths (.lambda.1, .lambda.2, . . . , .lambda.n), an output fiber (161) designed for carrying the whole set of such luminous beams, a dispersing system (107) receiving luminous beams from the input fibers (101 to 105) in an input plane and generating superimposed luminous beams designed for the output fiber (161) in an output plane.A converging lens array (171 to 175) is located in the input plane, whereas a lens corresponds to each input fiber and whereby the said input fiber is placed in the focal point of the said lens.The demultiplexer comprises the same elements, whereas the roles of the fibers and input/ouput planes are reversed.

Abstract: A process for manufacturing a hybrid card, and a hybrid card which functions as a smart card with flush contacts and/or produces acoustic signals which can be transmitted by telephone. The card includes a first sheet that has on one of its surfaces an interconnection pattern and electronic components, and through the body of the first sheet perforations for a double faced micro module (10). A second sheet is on an opposite face of the card. An intermediate sheet is between the other two sheets and has cut-outs (210, 215) in which are housed electronic components affixed to the first sheet, and has metal coatings (260) for making electrical connection to the micro module (10) and also to the interconnection pattern (110) on the first sheet (100).