Fiber Optic Sensing

Industry Leading Modular Fiber Sensing Solutions in Portables and Rack-Mounted Options

VIAVI offers the ONLY fully portable DTS and DTSS solution that also contain an OTDR. Most temperature and strain sensing devices are rack-mounted only. Our fiber sensing solutions are modular in design, battery operated and are compatible with the scalable T-BERD/MTS-8000 Scalable Multi-test or the VIAVI ONMSi solution combined with an OTU8000 unit.

  • What is fiber sensing?

    Fiber sensing uses the physical properties of light as it travels along a fiber to detect changes in temperature, strain and other parameters. Fiber Sensing can be measured using discrete sensors or by using the fiber itself – this is called Distributed Fiber Sensing. The device measuring the fiber itself are generally called interrogators. The purpose is to use a standard or specific fiber for measuring the temperature and strain along it using Raman and Brillouin Distributed Fiber Sensor techniques.

    For instance, using fiber sensing interrogator, one can:

    • Detect and locate any hot spot along your power cable.
    • Detect and locate any excessive strain on your optical cable and react before the break.
  • What are the applications of distributed fiber sensing?

    Here are few applications which can be addressed with fiber sensing interrogators.

    • Optical Network Sensing: Protect, inspect or monitor optical fiber networks or
    • Infrastructure Monitoring Sensing: A fiber can be used to conduct infrastructure monitoring by using the fiber as a probing device.  In this use case, one can deploy a fiber along critical infrastructure such as a bridge, pipeline, secure aperture or dam wall to set off an alarm if the fiber demonstrates sudden strain, movement or the temperature of the fiber puts the infrastructure at risk of damage or failure.  This can be used to secure openings such as doors or manhole covers to generate an alarm if the opening is breached.

    Several infrastructure monitoring applications are available with VIAVI fiber sensing interrogators.

    • Detection of ground movement along a pipeline
    • Detection of mechanical deformation of the pipeline.
    • Detection and location of any leakage along a pipeline, dike, dam etc.
    • Detection and location of any critical point in a telecom optical network.
    • Detection and location of any hot spot along a power cable
  • Why type of fiber sensing interrogators can be offered by VIAVI?

    The VIAVI Fiber Sensing portfolio includes:

    • DTS (Distributed Temperature Sensing) based on Raman OTDR technology
    • DTS (Distributed Temperature and Strain sensing) based on Brillouin OTDR technology
  • How can infrastructure be inspected periodically?

    Using a portable, such as the VIAVI T-BERD/MTS-8000 platform with a DTS or DTSS module, an inspector can go out into the field and conduct field measurements on fibers.  Alternatively, using ONMSi and a rack-mounted OTU (Optical Test Unit) with a DTS or a DTSS module, fibers can be monitored using periodic traces that are set to alarm if there is a change from the beginning reference trace.

  • How can Fiber Sensing shorten repair (MTTR) of critical infrastructure or a fiber network?

    Monitoring provides an immediate alarm once there is a change detected.  It can also provide a geo-located map pinpoint for the location of the event detected on the fiber.  This allows the organization to dispatch to inspect or to fix to the right location every time and eliminated the long span of time that would be required for finding a problem along a fiber.

Learn more about Fiber Testing.

Produits

Système de test et de surveillance des réseaux optiques backbones, métropolitains, d’accès et FTTH.
The T-BERD/MTS-8000 is the world’s most scalable test platform for next generation high speed network deployment (40G and 100G). It’s a multi-application platform with physical, optical and Transport / Ethernet testing capabilities.
OTU-8000 Optical Test Unit
Automate optical network monitoring with the modular rack-mounted, automated OTDR test unit that offers a wide range of OTDR modules to make traditional OTDR traces as well as DTS and DTSS (Distributed Temperature and Strain) measurements.

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