4DSP Brings Fiber Optic Sensing Technology to an Unprecedented Level of Performance with the RTS125

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Eight-channel fiber optic distributed strain, temperature and shape sensing solution.


The RTS125 is a step forward for this revolutionary technology.

The new RTS125 is an off-the-shelf, distributed Fiber Optic Sensing solution. With tens of thousands of strain or temperature sensors simultaneously monitored up to 100 times per second, the RTS125 offers the same sensing capabilities on up to eight channels as its predecessor the RTS150 but in a lighter and ruggedized enclosure. This product delivers reliable measurements in the most demanding environments faced by the aerospace, automotive, civil engineering, and energy sectors among others.

“The groundbreaking distributed sensing capability of the RTS125 is comprehensive because it is possible to measure many different parameters using a single system. This simplifies the collection and monitoring of diverse measurements,” said 4DSP application engineer Alex Tongue. The Fiber Bragg Gratings (FBG) enable the extraction of environmental parameters such as strain loads and temperature gradients continuously along the entire length of the sensor.

With virtually weightless sensor arrays, the RTS125 is applicable to structures of any nature where real-time changes must be monitored with precision. This instrument can be embedded as part of critical applications that require real-time monitoring. For example, it can perform structural monitoring of an aircraft fuselage during flight. The RTS125 can also be used to sense and display the three-dimensional shape of a sensor with a resolution down to 450 micrometers, enabling monitoring of pipelines or mining boreholes in oil & gas applications as well as human arteries in medical applications to accurately determine the shape of complex paths.

“As 4DSP continues to refine our line of fiber optic sensing instruments, the potential for new applications expands,” said 4DSP CTO Pierrick Vulliez. “The RTS125 is a step forward for this revolutionary technology, and its compact size, robust enclosure and increased efficiency make it an appealing choice for demanding installations with stringent limitations on physical space and power consumption.”


  • 8 simultaneously monitored fiber optic sensing channels
  • 2048 equally-spaced sensors per fiber
  • 0.1cm to 10cm spatial resolution
  • Real-time strain and temperature measurements through FBG
  • Less than 50ms latency
  • Up to 100Hz refresh rate
  • 3D shape sensing capability
  • Resistance to electromagnetic/radio frequency interference and radiation for reliable operation in demanding environments
  • Networking capability via Ethernet


  • Aerospace: Tracking structural shapes and aircraft frames
  • Automotive: Studying truck or automobile frames to improve safety or actively control handling
  • Structures: Monitoring the overall health of structures that undergo constant stress, such as bridges, dams and buildings
  • Wind turbines: Monitoring turbine blade shape and force to improve efficiency and longevity
  • Oil & Gas: Determining the shape of pipelines, boreholes, and subsea risers
  • Medical: Determining the shape of medical instruments used in non-invasive and minimally invasive surgical procedures


  • RCTA-DO-160G (tests pending)
  • MIL-STD-810F (tests pending)

More details about this product can be found on the following page: RTS125.

Sales Contacts:
USA / International
Michael Brown
Tel: +1 (800) 816-1751
Fax: +1 (775) 473-9928
4DSP LLC, 1210 San Antonio Street, Suite 801, Austin, TX 78701, USA

Erik Barhorst
Tel: +31-172-782-190
Fax: +31-172-891-261
4DSP BV, Ondernemingsweg 66f, 2404HN, Alphen aan den Rijn, Netherlands

About 4DSP LLC
4DSP is an innovative company specializing in compact, low-power, and low-weight FPGA-based signal and image processing systems. Founded in 2004 and headquartered in Austin, Texas, USA, with offices in the Netherlands, 4DSP develops reconfigurable computers of advanced architecture that offer maximum flexibility and scalability.

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Michael Brown
+1 775 233 5784
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