Fibre Optic Cables

  • cable design

    Fibre Optic Cables: Subsea / Underwater / Power

    Hydro Group plc design and manufacture subsea underwater fibre optical cables for the oil & gas, renewable energy and the defence industry.

    For transmitting data underwater and topside over large distances, fibre optic cable technology has distinct advantage over the more conventional electrical cables. As opposed to most types of electrical cables, fibre optic cables use light instead of electricity to transmit signals. Light is the fastest method of transmitting information / data and fibre optic cables has the advantage of not being subject to electrical interference, thus, you can run it just about anywhere and is well suited for all underwater / subsea applications.

    Hydro Group offer a range of different fibre optic options including single mode, multimode, tight buffered, loose tube, steel tube, plastic tube and ruggedized.

    9/125 Singlemode, 50/125 & 62.5/125 Multimode fibre optics can be supplied as standalone cables suitable for subsea utilisation or part of a bigger bundle.

    Multimode fibres have a large core which allows a lot of data to be carried simultaneously but the losses are high so can only be used over short distances.

    Singlemode fibres have a small core with low losses so can be used over much greater lengths but the data capacity is much reduced and the hardware required to send and receive signals is more expensive.

    Loose Tube Fibre Optic (Fiber Optic): Optical fibre enclosed within a plastic tube with or without gel and aramid fibre suitable for both horizontal and vertical cable applications, each tube can accommodate several fibres.

    Tight Buffered Fibre Optic (Fiber Optic): Similar to loose tube with aramid fibre which provides a high strength, crush resistant component suitable for long vertical spans.

    Metal Tube Fibre Optic (Fiber Optic): Stainless tube encased fibres which can be hermitically sealed, less flexible than plastic tubes it however gives greater physical protection and higher working depth pressures can be obtained.

    Ruggedized Applications: The fibre optic is protected in an armour cable strength member, with an outer jacket of hytrel or polyurethane can be used for underwater sensors and sonars, video, telemetry, rov controls in shallow and deep water, aerial camera tethers, thermistor cables, seismic, sonobuoys and range cables.

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