Abstract: The present invention relates to a method of producing an optical filter, characterized in that it comprises effecting the following steps on an optical waveguide (10): controlling the varying interior profile of the waveguide, preferably by melt-drawing, and writing a Bragg grating (20), using techniques allowing independent control of longitudinal variation of the Bragg wavelength and longitudinal variation of the exterior profile of the waveguide.

Abstract: The present invention provides a method of modeling an optical fiber amplifier, the method being characterized in that it comprises the steps consisting in: establishing (100) the speed equations and the propagation equations of physical phenomena or effects involved in an optical fiber amplifier; obtaining (112) exact analytic solutions for the propagation equations of signals in the fiber, discretizing them, and interpolating them along the fiber; solving (120) the previously discretized speed equations by injecting into them solutions obtained from the propagation equations; and delivering (130) the performance parameters of the fiber in terms of amplification.

Abstract: The invention concerns a method for re-cladding an optical fiber (10) at least partly stripped over part of its length (16). The invention is characterised in that it comprises steps which consist in: placing a flexible tube (20) on the zone (16) of stripped fiber, injecting a polymer material (40) into the tube (20), through an axial end thereof, and polymerising the injected material (40) so that it adheres to the outer surface of the zone (16) of stripped fiber and to the inner surface of the tube (20), over the entire length of the tube (20). The invention also concerns the resulting optical fibers.

Abstract: The present invention provides a method of modeling an optical fiber amplifier, the method being characterized in that it comprises the steps consisting in: establishing (100) the speed equations and the propagation equations of physical phenomena or effects involved in an optical fiber amplifier; obtaining (112) exact analytic solutions for the propagation equations of signals in the fiber, discretizing them, and interpolating them along the fiber; solving (120) the previously discretized speed equations by injecting into them solutions obtained from the propagation equations; and delivering (130) the performance parameters of the fiber in terms of amplification.

Abstract: The present invention relates to an optical-fiber device comprising at least one component (11) integrated into the fiber (10), and a support assembly on which the fiber (10) is fixed at two points (1322, 1332) situated respectively on either side of the integrated component (11), which support comprises at least two elements (120, 130, 132) possessing different thermal-expansion coefficients which are arranged functionally in series between the two points of fixing of the fiber, characterized in that the interface (131, 133) between the two elements (120, 130, 132) possessing different thermal-expansion coefficients is at least substantially perpendicular to the axis of the fiber (10), and in that the means for support of the optical fiber (10) comprise a support assembly consisting of three pieces (130, 120 and 132) arranged in series, in a Z-shaped geometry.

Abstract: The invention concerns an optical device comprising an optical fiber including at least an integrated component, a support including two fixing zones wherein the optical fiber is fixed respectively at the two zones located on either side of the component. The invention is characterized in that the support comprises, between the two fixing zones, at least a linking beam capable of bending and the device further comprises means for imposing a controlled bending to the beam, adapted to adjust the distance between the two fixing zones.

Abstract: The present invention relates to a method and to apparatus for depositing thin layers. The technical field of the invention is that of manufacturing thin layer optical devices. In the invention, apparatus for depositing thin layers on a plurality of substrates comprises means for producing a light beam for monitoring the optical thicknesses of the substrates.

Abstract: The invention relates to an exposure method for producing a Bragg grating on a photosensitive guide (120) or optical fiber (120), in which method the guide (the fiber) (120) is scanned by a light beam (300) and means (100, 220, 230) are provided for modulating the exposure time along the guide (the fiber) by varying the speed at which the beam (300) moves along the guide (the fiber) (120) so that it is located opposite each location of the guide (the fiber) (120) for a time period that varies with the location, the method including the step of disposing in front of the guide (the fiber) (110) a system (140) adapted to create interference fringes on the guide (the fiber) (120) and to scan the beam (300) over the interference system (140) at a speed that is modulated along the system (140), and furthermore the step of having the beam scan the guide (the fiber) (120) at a modulated speed without the interference system (140) on the path of the beam (300), the scanning with the interference system (140) being eff

Abstract: An optical fiber for producing energy-dissipative and wavelength—selective filters is presented. The fiber includes a core and a cladding that are photosensitive to radiation and have a periodic perturbation of the refractive index. The periodic perturbation defines at least one Bragg grating with lines tilted with respect to the axis of the fiber. The refractive index difference between the core and the cladding is less than 3×10−3.

Abstract: This invention relates to a transmission-polarizing filter comprising a substrate (1) and a partially metallized grating (2) carried by this substrate (1). The grating is a holographic grating, having a profile (3) with facets (4, 5) with, alternately, positive slopes (4) and negative slopes (5), whereas one of both sets of these facets with positive or negative slopes is partially metallized. The filter is manufactured by making a holographic grating on a substrate, by metallizing the said substrate and by machining the said substrate partially according to an ionic process.

Abstract: The present invention relates to a method and to apparatus for depositing thin layers. The technical field of the invention is that of manufacturing thin layer optical devices. In the invention, apparatus for depositing thin layers on a plurality of substrates comprises means for producing a light beam for monitoring the optical thicknesses of the substrates.

Abstract: Optical fiber wavelength multiplexer/demultiplexer having an optical axis and including a refraction grating having a dispersion plane; at least one exit fiber having an entrance face; at least one entrance fiber having an exit face; an optical combining device for optically combining the exit face of the entrance fiber with the entrance face of the exit fiber ensuring the operation of the grating in a Littrow configuration. The optical combining device includes a separate reflecting device for ensuring a fold-back of the optical axis thereby allowing a high Littrow angle.

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.