A feedthrough (10) for an element (100) is described, comprising: a body (500), a cap assembly, comprising a cap (200) and optionally a follower (300), and a sealant (400), having respective passageways therethrough, defining an axis A, for receiving the element (100) therethrough; wherein the body (500) is couplable to a wall W of a hermetically-sealed vessel V having an aperture A for the element (100) therethrough and wherein the passageway of the body (500) is adapted to retain, at least in part, the sealant 400 and optionally the follower (300) therein; wherein the cap (200) is releasably couplable to the body (500); wherein the feedthrough (10) is configurable in: a first configuration, wherein the cap (200) is coupled to the body (500), wherein matching faces of the cap assembly and the body (500) are mutually spaced apart by a gap and wherein the element (100) extends through the respective passageways; and a second configuration, wherein the cap (200) is coupled to the body (500), wherein the matching faces (230, 520) of the cap assembly and the body (500) abut and wherein the element (100) extends through the respective passageways; wherein the cap assembly is adapted to axially compress the sealant (400) against the body (500), thereby causing the sealant (400) to radially compress against the element (100) and to form a hermetic seal between the body (500) and the element (100), in the second configuration.

An object to provide a submarine optical transmission apparatus capable of efficiently housing optical components and electric components. First component housing units can house either or both of an optical component and an electric component and are stacked in a Z-direction. A case can house the first component housing units and a longitudinal direction thereof is an X-direction. A heat dissipating member is disposed in the case and conducts heat generated in the first component housing units to the case.

Production process of a submarine optical amplifier (99) for optical telecommunication systems, and relative submarine optical amplifier (99), comprising: covering at least a central body (3) for making a central portion (6) of a layer of electrically insulating material (60) which covers a vessel (50); inserting an apparatus for optical amplification (5) at least partially in an housing cavity (4) of the vessel (50); assembling the vessel (50) by fixing at least a first end body (1) to the central body (3) for closing said housing cavity (4); completing the electrically insulating material (60) by at least partially covering the first end body (1) with the electrically insulating material for making a first portion (6′) of the layer of electrically insulating material (60), wherein a first thermally insulating element (7) is interposed between the central body (3) and the first portion (6′) of the layer of electrically insulating material (60).

A sealing enclosure is configured to connect to a mating enclosure. The sealing enclosure loosely receives a connector within a connector volume so that the connector, which may be of a standard type used in electronic or optic data transmission, may be displaced within a plug face at the forward end of the connector volume. The connector may compensate variations in the position of a mating connector with respect to the mating enclosure. The sealing enclosure allows to seal off the connector volume and engage the sealing enclosure with a mating enclosure in a single motion. This is affected by having a cable seal interposed between an inner body and an outer body. If the outer body is moved forward to engage the mating connector, the cable seal is squeezed between the cable and the inner body sealing off the connector volume at the rearward end of the inner body.

The present invention provides an epoxy-less optical fiber termination. More specifically, the present invention provides an epoxy-less optical fiber termination comprising a waveguide termination having an optical fiber spliced to a stub protruding from the waveguide termination and having a strain relief disposed about the stub and the optical fiber. Additionally, the strain relief may be filled with an epoxy fill to provide additional support to the optical fiber. The present invention may be used to terminate an optical fiber joining devices in an optical communications network.

An optical fiber penetration is disposed in a sleeve provided through a partition wall that separates a first space and a second space. The optical fiber penetration includes a first optical fiber cable and a second optical fiber cable each having a thin tube formed of metal and an optical fiber strand inserted in the thin tube, a cylindrical body that is formed of metal and is disposed in an axial direction of the sleeve, an interior of which includes the first optical fiber cable on a side of the first space and the second optical fiber cable on a side of the second space, an internal connector configured to connect the first optical fiber cable with the second optical fiber cable in the interior of the cylindrical body, and a first lid and a second lid configured to close one end and the other end of the cylindrical body.

A downhole fluid properties optical analysis probe (1) to analyze at least one property of a multiphase flow mixture (100) flowing in a hydrocarbon well (51) has an elongated cylindrical body shape. It comprises an optical tip (5) at one end of the elongated cylindrical body arranged to be in contact with the multiphase flow mixture (100). It further comprises an optical link (6) adapted for a connection with an electronics module (11) at another end of the elongated cylindrical body arranged to be separated from the multiphase flow mixture (100). The optical tip (5) is coupled to the optical link (6) through a removable and watertight coupling (7). The removable and watertight coupling comprises a first portion (9a) of a protective tube (9) resistant to downhole conditions, said first portion (9a) enclosing the optical link (6) and comprising at least one first ring bulge (22) close to a coupling interface (10), and a second portion (9b) of the protective tube (9) partially enclosing the optical tip (5) such as to let a distal end of the optical tip (5) in contact with the multiphase flow mixture (100), said second portion (9b) comprising at least one second ring bulge (23) close to the coupling interface (10). It further comprises a coupling tube (24) surrounding facing ends of the first portion (9a) and the second portion (9b), said coupling tube (24) being adjusted in size to fit in between said first and second ring bulges (22, 23), and a coupling and protecting sheath (25) enclosing said first ring bulge (22), coupling tube (24) and second ring bulge (23) in a watertight manner.

A system (10) and method that facilitates the delivery of power and fiber communications together is provided. The system and method enables quick and easy connection of a hybrid cable (12) to telecommunication equipment. The system provides a sealed robust connection for both conductors (78, 80) and fibers (50) at a single location (56). It can be used to avoid the need for local powering of fiber based communication devices and networks.

A connection arrangement is provided for connecting an armored cable to a connection piece. The arrangement has a ferrule for fitting onto the end of the armored cable, that has an abutment flange, a washer and a threaded region. The threaded region has at least a portion threaded according to a first thread standard. A lock nut is configured to fit over the armored cable, and to connect with a nut thread on the connection piece. The lock nut and the connection piece are configured to compress the ferrule therebetween forming a watertight connection. An armor of the armored cable has a least a portion of the armor threaded to match the first thread standard.

A sealing enclosure is configured to connect to a mating enclosure. The sealing enclosure loosely receives a connector within a connector volume so that the connector, which may be of a standard type used in electronic or optic data transmission, may be displaced within a plug face at the forward end of the connector volume. The connector may compensate variations in the position of a mating connector with respect to the mating enclosure. The sealing enclosure allows to seal off the connector volume and engage the sealing enclosure with a mating enclosure in a single motion. This is affected by having a cable seal interposed between an inner body and an outer body. If the outer body is moved forward to engage the mating connector, the cable seal is squeezed between the cable and the inner body sealing off the connector volume at the rearward end of the inner body.