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Brillouin scattering

/ Sensors systems

IDIL Fibres Optiques provides a wide range of Brillouin based optical sensors for strain and temperature monitoring.

IDIL offers sophisticated sensors systems using Brillouin scattering in optical fibers to measure changes in both temperature and strain along the length of an optical fiber.

With high spatial, strain, temperature resolution and accuracy, it is possible, for example, to detect when a structure is being strained, cooled or heated and correct the problem before a failure occurs.

IDIL complete interrogation solution (interrogator, software interface and sensors) allows an easy to use and implement industrial sensing solution. Furthermore, all our sensors are customized to your specifications and final application.

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  • High resolution and accuracy
  • Long reach
  • Rapid measurement
  • Robust
  • Unique cable flexibility technology
  • Follow the geometry of the structure
  • Structural health monitoring
  • Intrusion detection
  • Research
  • Onshore / Offshore
CompositionGlass fiber, epoxy resin
Optical fiberSingle mode 1.5 µm SMF 28 (G.652 standard)
Length10 cm ≤ L ≤ 50 m
Outer diameter4 mm (typical)
ConnectorsFC, LC, SC, SMA, ST, MU, E2000, other
Metallic jacket diameter4.6 mm / The length must be specified
Transfer coefficient0.94 or other
Thermal expansion coefficient2.2 10-6°C
Strength resistance480 MPa
Elastic elongation3%

Due to its strong dependence to environmental variables (strain and temperature), Brillouin scattering is successfully employed in distributed fiber sensors systems.

Compared to Fiber Bragg Grating sensors (localized sensors), Brillouin sensors are used to detect problems not know prior to sensor installation.

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