Simultaneous transmission of distributed sensors and data signals

Nowadays, fiber-optic sensors are widely used in many areas of an industry. To confirm increasing interest in these sensors we performed a short survey of market analysis not only for recent years but also market prediction for a near future. We performed also a short survey of current trends in fiber-optic sensors based on latest published results. For special applications we designed two possible setups of simultaneous transmission of data and sensor signals in the same fibers. By measurement we have verified suitability of interferometric methods for sensor applications if fibers with active data transmissions are used. For back-scattered based sensors a high-power optical signal is necessary hence a measurement of dependence of pulse duration on intensity of the Brillouin peaks was performed.