fiber optic grating sensor system

[vanessa-112]

There are so many kinds of optic fiber sensor systems.But in what kind
of field is fiber optic grating sensor system used in ?
This troubles me because I am a newer in tech-products.

[technut]

This is waaaay out of my area of expertise, but it appears they are mainly used as temperature and strain sensors.

A Fiber Optic Sensor (FOS) measures strain and temperature by means of wavelength shifts due to tensile stress on a Bragg grating. Slight shifts in the reflected wavelength are proportional to temperature or strain acting on the fiber at the corresponding grating location. Dependent on the fixation of the fiber to the structure, either floating or attached to the surface, local thermal or mechanical loads can be determined.

http://adsabs.harvard.edu/abs/2000SPIE.3986..380R

Hope that helps.

technut