Abstract: The present invention concerns a method for aligning fiber optics. The device used to implement the method comprises an inclined support (16) for a fiber optic (15) to be aligned with one or more fibers (11) in a flat ribbon (10), and an inclined contact element (12) supporting a gripping means (9) attached to the flat ribbon. The fiber extremities engage in V-shaped guide grooves (13) having a central alignment zone (14). Alignment occurs when the fiber to be aligned and the fibers in the flat ribbon are placed in the alignment zone by sliding each of them in one of the V-shaped grooves and inwardly curving a predetermined length thereof so that the fiber extremities are placed in immediate proximity to one another and are essentially tangential to said V-shaped groove only in the area of their extremities.

Abstract: A method for producing an optical fibre which has been treated with titanium dioxide to improve its corrosion resistance includes stretching an assembly consisting of an outer sleeve having engaged therein a bar which is partially or entirely made of synthetic silica. When treating said fibre, the outside of the coupling sleeve is coated, prior to assembling the components, with a deposit of vitrified synthetic silica containing titanium dioxide.

Abstract: Method and apparatus are disclosed for precisely positioning a pair of components such as optical components, including optical fibers, utilizing an apparatus which includes a first support for mounting the first component, a second support for mounting the second component and an elastic joint formed on the first support for moving the first support in relation to the second support by bending the elastic joint. In a preferred embodiment, the elastic joint includes a pair of parallel elastically bendable arms formed on the first support and bendable in a first direction so that the elastic joint provides a translation module.

Abstract: The present invention relates to a process of coupling optical fibers by means of a holographic lens, and an apparatus for carrying out this process. A holographic lens H.sub.2 is recorded conventionally by utilization of a provisional hologram H.sub.1, by means of two monomodal optical fibers mounted by their respective end pieces in a block used to support the holographic lens. The block has bores, clearly defined in shape and position, into which are introduced the end pieces of monomodal fibers to effect recording of the holographic lens, and in which are fixed the end pieces of multimodal fibers which are to be optically coupled after withdrawal of the monomodal fibers. The process and apparatus of the invention enables the speckling phenomenon, i.e., that of non-uniform distribution of light in the transmitted beams, to be suppressed, improving the efficiency of the holographic lens.

Abstract: A provisional holographic lens H.sub.1 is recorded by causing the interference of a parallel reference beam with a divergent beam emitted from an optical fibre 27, and then a definitive holographic lens H.sub.2 is recorded by causing the converging, conjugate beam to the divergent beam to be formed by illuminating the provisional holographic lens by the reference beam and using this converging, conjugate beam to interfere with the beam emitted by an optical fibre 31. The definitive holographic lens H.sub.2 and the ends of the fibres 27 and 31 are embedded in a block of hardenable transparent synthetic material. The provisional holographic lens H.sub.1 may be positioned externally of this block or be enclosed with the other elements in this same block.This process in particularly advantageous, because it permits certain delicate optical adjustments to be eliminated and because it avoids certain causes of light loss.