Industry / Sensors

Sensor technology has considerably changed over the last decades and fiber optics contribution has been important for this evolution.  Optical fibers are used either to transmit the signal of traditional sensors when immunity to electromagnetic interference is necessary or as the sensor itself. A number of fiber parameters are used as sensing technology such as Rayleigh, Raman or Brillouin scattering, polarization rotation, attenuation, wavelength transmission with Bragg gratings, etc.


Wavelength transmission

fibers have to be selected according to their transmission performance of the appropriate wavelength. Particularly when the sensor signal happen to be weak.


UV

Ultraviolet light increase significantly attenuation of the silica core. This called “solarization” of the fiber. When UV wavelength are used for the sensor application it is necessary to chose non-solarization fibers


IR

Infrared light is used for many sensing applications. Silica core fibers are limited to about 2µm wavelength. For longer wavelength other materials can be offered such as fluorozirconat also called Zblan, or sapphire fibers.


Environnements

harsh environment such as high temperature, high pressure, vacuum, radiations, etc. is often associated with sensing applications. This is a difficult challenge for optical fibers.  Fiber protection must be carefully adapted for the reliability of the systems.


Achievements / Products

Using optical fibers in harsh or even extreme environment implies specific design to operate in conditions such as radiations, high temperature, high pressure or very diverse mechanical constraints. Products are designed according customer’s specifications and manufactured under ISO 9001 quality process.

WDM