Abstract: A method for the deposition of a coating layer on an optical fiber while it is being drawn. The coating layer is designed to reduce the permeability of the optical fiber to water vapor and therefore to increase its lifetime. The method is characterized in that it consists in carrying out a decomposition of a gas mixture of boron halogenide and hydrogen and/or boron halogenide and ammonia gas by a microwave plasma-assisted addition of energy and in that the operation is conducted in the presence of a carrier gas in order firstly to carry the gas mixture to a reaction medium and secondly to activate the plasma.

Abstract: The invention concerns a method and a device for depositing at least one thin film of a liquid agent on a wireframe element such as an optical fiber designed to form a very fine coating on said wireframe element consisting in spraying the liquid agent on the wireframe element with spraying means, the wireframe element and the spraying means being in relative movement with respect to each other. Preferably, the liquid agent used is obtained from novel acrylphosphorus or metacrylphosphorus compounds. The method is most particularly adapted for coating optical fibers and enables to substantially improve the stress corrosion factor “n” of the fibers and to maintain said factor “n” after aging.

Abstract: A modular optical transmission cable which has several reinforcement and optical modules, each optical module having:a sheathed optical fiber, coated with:an intermediate decoupling layer, and witha rigid shell forming a microcarrier,a reinforcement module being associated with an optical module, the modules being molded in an external sheath. A flexible reinforcement module is associated with at least one optical module that is self-reinforced against compression in order to obtain a cable having high flexibility combined with high compressive strength. The disclosure can be applied in the field of optical fiber cables and especially that of the reinforcement structures of such cables and fibers.

Abstract: Joint closure modules and boxes for optical fiber cables, also known as splice organizers, the module having a supporting plate demarcating a shielded space of extension of the fiber transfer sections, said supporting plate including, firstly, a set of aligned and separate means for anchoring the external sheath, the peripheral reinforcements and the central strength element, respectively, of each cable and, secondly, at least one fiber coiling and connection cartridge with guided hinging, arranged so as to limit the transfer length and the course of shift of said sections for the transfer of the guided shift of said hinged cartridge.