OFSprovide continuous monitoring of cultural heritage and enable protection against the long-term effects of potential risk factors relying on optical fibers: flexible glass or plastic fibers that can transmit light from one end to the other.

Optical fibers are used as sensors to measure strain, temperature, pressure and other quantities by modifying a fiber so that the quantity to be measured modulates the intensity, phase, polarization, wavelength or transit time of light in the fiber.