A power cable assembly device adapted to be arranged in the spaces between neighboring power cores of a power cable. The power cable assembly device includes an extruded profiled body made of a polymer material having a first, second, and third walls. The first wall being convex and having an exterior surface adapted to face a jacket of the power cable. The profiled body also having a chamber wall extending from the second to the third wall, defining a slit and adapted to receive a fiber optic cable.

At least some illustrative embodiments are including a method exposing a first optical fiber and a second optical fiber disposed within an interior volume of a first tube. A splice is formed between the first optical fiber and a third optical fiber, the splice joining an end of the first optical fiber and an end of the third optical fiber. A second tube is disposed the first, second, third optical fibers and the splice between the first and third optical fibers, wherein an end of the second tube adjoins an end of the first tube to form a structure comprising either an overlapping structure; or an abutting structure.

Staggered Splices. At least some illustrative embodiments are apparatus including a tube having a wall defining an interior volume, first and second optical fibers disposed within the interior volume and the first and second optical fibers joined at a first splice. Also included are third and fourth optical fibers disposed within the interior volume, the third and fourth optical fibers joined at a second splice. The first splice and the second splice have an axially spaced-apart relationship within the interior volume of the tube.

The invention relates to a mockup with an optical transmission path, which optically connects the optical entrance to the optical exit, wherein an optical attenuator is arranged in the optical transmission path, wherein an optical condition of the transmission path is adjusted by means of the optical attenuator so that an optical transmission behavior of a wound optical fiber is simulated. The invention also relates to a mockup system, underwater vessel and/or sinker, a transfer mechanism, and a vessel, together with a training method with a mockup, which is deployed in an underwater vessel and/or in a sinker.

A bundle of cables includes at least two underwater cables and a fastener for fastening the underwater cables together. The fastener is water-soluble, biologically decomposable and/or chemically decomposable. A method of laying at least two underwater cables simultaneously from a vessel and a method of using a water-soluble, biologically decomposable and/or chemically decomposable fastener to fasten at least two underwater cables together to form a bundle of cables are also described.

A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other.

An optical fiber cable assembly for use in a fluid environment includes an elongated optical fiber cable having a negative buoyancy. A first supplemental filament has a positive buoyancy and is connected to the elongated optical fiber cable to form a composite cable assembly having a composite buoyancy that is generally neutral.

Communication device connection assemblies are described. The sealable connection assemblies are configured to provide water-tight connections for various data transmission elements, including cables, network devices, and computing devices. The connection assemblies may be used for various data transmission protocols, such as fiber optic connections. A compression element of the connection assembly may be configured to engage and compress a sealing element against a communication cable extending through the sealable connection assembly when a tension element is coupled to the inner body, thereby forming a seal between the sealable element and the communication cable. The connection assemblies may include a retainer body configured to form a grip or retention force with a communication cable sufficient to reduce and/or eliminate any forces on the communication cable (i.e., bending and/or straight pull forces) from being transferred to and/or otherwise effecting other components of the connection assembly, such as sealing elements thereof.

The present techniques are directed to systems and methods for forming a pipe-conforming structure. The pipe-conforming structure includes a polymer material and one or more optic fibers embedded within the polymer material. The polymer material is formed into a structure that is conformed to the shape of a pipe. A method includes forming a polymer material into a structure including an edge region and a center region. The center region has a greater thickness than the edge region. The method includes inserting one or more optic fibers into the polymer material.

Tube reattachment. At least some illustrative embodiments are including a method exposing a first optical fiber and a second optical fiber disposed within an interior volume of a first tube. A splice is formed between the first optical fiber and a third optical fiber, the splice joining an end of the first optical fiber and an end of the third optical fiber. A second tube is disposed the first, second, third optical fibers and the splice between the first and third optical fibers, wherein an end of the second tube adjoins an end of the first tube to form a structure comprising either an overlapping structure; or an abutting structure.