Abstract: An optical fiber includes an optically transmissive element; at least one curable colored layer surrounding the optically transmissive element; and an additional removable colored layer surrounding and homogeneously covering the curable colored layer. The presence of the additional removable colored layer improves identifiability of the fiber, especially when the latter is included in an optical cable together with other fibers.

Abstract: A method of making an optical fiber includes the steps of: providing an optical fiber preform; heating an end portion of the optical fiber preform so as to obtain a softened preform end portion; drawing the softened preform end portion to form the optical fiber; applying to the optical fiber a substantially sinusoidal spin having a spin amplitude and a spin period, the substantially sinusoidal spin being transmitted to the softened preform end portion, and determining an actual spin amplitude applied to the fiber, wherein the actual spin amplitude is the spin amplitude applied in correspondence to the softened preform end portion. The spin amplitude and spin period of the substantially sinusoidal spin are selected in such a way that a ratio of the actual spin amplitude to the spin period is in the range of approximately 0.8 to approximately 1.4 turns/m2.

Abstract: An assembly for installing an optical access network includes at least one in-line optical cable and a drop cable. The assembly includes a duct suitable for housing the at least one in-line optical cable and an optical transition box for snaking an optical connection between the at least one in-line optical cable and the drop cable. The duct has a window. The optical transition box has a base with two sidewalls. Each of the two sidewalls has a first opening allowing the in-line optical cable to enter and exit the base. The base is suitable for being partially inserted in the duct through the window in such a way that, when the base is partially inserted in the duct, the first opening is contained within the duct.

Abstract: A magnetically shielded cable arrangement, comprising at least two AC cables (201-203) comprising a spaced portion extending between two close portions of parallel cables, such spaced portion sequentially including a diverging portion, a widely spaced portion and a converging portion, and an EMF shielding system (1) laid over said at least two AC cables (201-203), said EMF shielding system (1) comprising a conductor (2, 3, 11, 12) having two branches (2, 3) forming a median portion (4, 5) and end portions (7-10), the median portion width being equal to or larger than the AC cables distance in the widely spaced portion and the width at the extremities of the end portions (7-10) being larger than the AC cables distance in the close portions and smaller than the AC cables distance in the widely spaced portion, said conductor (2, 3, 11, 12) comprising an inner electrical path (2a, 3a) and an outer electrical path (2e, 3e) connected together (11, 12) at relevant longitudinal ends.

Abstract: An electric article, particularly an electric cable or an accessory thereof, such as a cable joint or a cable termination, includes at least one element made from a semiconductive polymeric material, wherein the at least one element is obtained by crosslinking a semiconductive polymeric composition including: (a) at least one elastomeric polymer; (b) a filler mixture including: (i) at least one first carbon black having a dibutyl phthalate (DBP) absorption number of from 250 to 600 ml/100 g; (ii) at least one second carbon black, different from the first one, having a dibutyl phthalate (DBP) absorption number of from 80 to 250 ml/100 g; and (c) at least one graphite having a specific surface area, measured according to the BET method, not higher than 20 m2/g.

Abstract: A bend-insensitive optical cable for transmitting optical signals includes an optical cable having a length, extending from an input end adapted to receive the optical signals, to an output end and including at least one single-mode optical fiber having a cable cut-off wavelength, of 1290 nm to 1650 nm. The at least one optical fiber is helically twisted around a longitudinal axis with a twisting pitch, for a twisted length, extending along at least a portion of the length, of the optical cable, wherein the twisted length and the twisting pitch are selected such that the optical cable exhibits a measured cut-off wavelength equal to or lower than 1260 nm. Preferably, the at least one fiber has a mode-field diameter of 8.6 ?m to 9.5 ?m. According to a preferred embodiment, the optical cable includes two optical fibers twisted together along the longitudinal axis, each of the two optical fibers having a cable cut-off wavelength of 1290 nm to 1650 nm.

Abstract: An energy cable includes at least one electrical conductor and at least one extruded coating layer including a thermoplastic polymer material in admixture with a dielectric fluid, wherein the dielectric fluid includes a compound of formula (I): X-A-X?; where A is a monocyclic aromatic moiety or an at least partially aromatic condensed polycyclic moiety; and at least one of X and X? is methyl or an aliphatic moiety, in both cases optionally substituted with and/or interrupted by one or more of keto, alkoxy, alkylthio, mercapto, hydroxyalkyl, hydroxyl; the other being hydrogen; the compound having a ratio of number of aromatic carbon atoms to total number of carbon atoms greater than or equal to 0.6.

Abstract: A optical fiber includes an optically transmissive element; at least one curable colored layer surrounding the optically transmissive element; and an additional removable colored layer surrounding and homogeneously covering the curable colored layer. The presence of the additional removable colored layer improves identifiability of the fiber, especially when the latter is included in an optical cable together with other fibers.

Abstract: A biasing connector (150) is disclosed. The biasing connector is configured to bias a shielding element (135) of a power cable (105) in connection with a cable joint, wherein an external sheath (144) extends over a length of a cable sheath (137). The biasing connector includes an end portion (155; 505) for contacting the shielding element, and a conductive tape (165) having a first end connected to the end portion of the biasing connector and a second end adapted to be connected to a terminal (160) providing a biasing voltage. At least one portion (165, 308) of the conductive tape comprises at least one layer of a solid flat element having a width substantially equal to a transversal width (wd) of the conductive tape (165); said at least one portion is at least partly covered by the external sheath (144).

Abstract: A process for manufacturing an optical fiber, includes the steps of: a) producing a soot core preform by depositing a core material on a substrate; b) removing the substrate from the soot preform leaving an axial cavity along the longitudinal axis of the soot core preform; (c) drying and consolidating the soot core preform so as to obtain a glass core preform having an axial hole corresponding to the axial cavity; d) reducing a diameter of the axial hole; and e) stretching the glass core preform so as to substantially close the axial hole, wherein the process further includes the step of measuring at least one geometric characteristic of the axial hole of the glass core preform.

Abstract: It is disclosed an optical cable for communications including at least one micromodule, the micromodule including a retaining element and number N of optical fibers housed in said retaining element. The diameter of a circumference encircling the number N of optical fibers is typically 90% to 95% of an inner diameter of the retaining element. The retaining element consists essentially of a film grade polymeric material having an elongation at break equal to or higher than 500%, a melt flow index (MFI) lower than 3 g/10 min, and a density lower than 1 g/cm3.

Abstract: Telecommunication cable comprising at least one microstructured optical fiber comprising a core region and a cladding region surrounding the core region, the cladding region comprising an annular void-containing region comprised of randomly arranged voids, the core region including doped silica to provide a positive refractive index relative to pure silica; and at least one protecting layer provided around said optical fiber, the protecting layer being made of a polymeric material having a low ultimate elongation.

Abstract: A buffered optical fiber includes an optical waveguide, at least one exterior coating surrounding the optical waveguide and a buffer coating surrounding the at least one exterior coating, wherein the buffer coating is a tight buffer coating made of a material having a density of at least about 1.2 Kg/dm3, a thermal conductivity of at least about 0.4 W/m·K and includes a polymeric matrix and an inorganic filler.

Abstract: The present invention embraces an optical transition box for housing the connection between a riser cable and a drop cable of an optical access network. The box has a base, which itself typically includes: a bottom for housing the excess lengths of the optical fibers of the riser cable and of the drop cable, a first sidewall and a splice-holder element for housing the splices between the optical fibers. Typically, the splice-holder element is fixed to the first sidewall and overhangs above the bottom. A distance not less than the diameter of an optical fiber is typically provided between the bottom and the splice-holder element.

Abstract: A system for monitoring ancillary elements of an electric power distribution network, includes an optical fiber path associated with the ancillary elements to be monitored, respective optical branches branching from the optical fiber path, wherein each optical branch includes at least one passive optical attenuator operatively coupled to, and having an attenuation adapted to change in response to a change in operating conditions of the respective ancillary element, and an optical reflector; an optical radiation source adapted to inject optical radiation into the optical fiber path; and an optical receiver adapted to detect back-reflected optical radiation reflected by the optical reflector; the monitoring system being further adapted to recognize a position of at least one of the ancillary elements based on a characteristic of the back-reflected optical radiation.

Abstract: An electric power transmission cable includes at least one first section provided with cable armour made of a first metallic material, and at least one second section provided with a cable armour made of a second metallic material, wherein the second metallic material has ferromagnetic properties substantially lower than those of the first metallic material.

Abstract: A manufacturing process of a microstructured optical fiber including a void-containing region, includes the steps of: drawing a microstructured optical fiber along a longitudinal direction from a heated preform, wherein the optical fiber is continuously advanced along the longitudinal direction; directing a radiation beam at a longitudinal position in the longitudinal direction of the optical fiber so as to produce an interference pattern; detecting the interference pattern and producing at least one electrical detection signal corresponding to the interference pattern and including a plurality of signal fringe cycles; feeding the first detection signal into a first counter circuit; determining a first number of interference fringe increments in the plurality of signal wave fringe cycles of the at least one detection signal by using the first counter circuit; determining the outer diameter of the optical fiber, and controlling the microstructure of the optical fiber during advancement of the optical fiber.

Abstract: A cable for transporting or distributing electric energy, especially medium or high voltage electric energy, includes at least one electrical conductor, at least one electrically insulating layer surrounding the electrical conductor, and at least one sheath surrounding the electrically insulating layer, wherein the sheath includes 65% to 95% by weight of at least one thermoplastic ethylene polymer; 5% to 35% by weight of at least one plasticizing agent, the percentages being expressed with respect to the total weight of the sheath. The above sheath guarantees improved flexibility without impairing mechanical properties and particularly thermopressure resistance, which is essential to preserve shape and integrity of the screen layer during cable installation and use at high operating temperatures.