Ultra weak fiber bragg grating array has the advantages of small optical signal transmission loss, strong multiplexing ability, corrosion resistance, anti-interference, low cost and so on, has become a new generation of fiber optic sensing in the field of important components. Ultra weak fiber bragg grating array sensing system with large capacity, long distance, high accuracy and other characteristics, to solve the traditional fiber bragg grating sensing series loss, low intensity, the number of sensors is small, the wavelength cannot be multiplexed defects, very suitable for large-scale distributed monitoring network.

Ultra weak fiber bragg grating array sensing system usually adopts hybrid multiplexing technology, through the sub-channel, wavelength, time-sharing way, from the three dimensions of multiplexing, to achieve efficient real-time monitoring of large-capacity sensor network, you can monitor the stress, strain, temperature and so on. The technology is mainly used for:

1. structural safety monitoring system: such as bridges, tunnels, dams, pipeline corridors, aircraft, rail and so on.

2. perimeter security monitoring system: military bases, border lines, railway perimeter and so on.

3. Temperature measurement and fire alarm system: fire, grain silo, electric power (energy storage station, switchgear, high-voltage cables) and so on.

Based on the self-developed swept tunable laser module, Arcadia Optronix’s Technology increases the function of pulse SOA, achieves WDM+TDMA, and then splits the light into multiple paths through the splitter to achieve a multi-path pulsed swept tunable laser module programme dedicated to weak reflection grating system.