Abstract
One of the main goals of fiber optic sensor technology is to multiplex together a high number of sensors in the same fiber in order to share expensive terminal equipment and reduce the size and weight of the optical cable. Both passive and active multiplexing techniques are used for telemetry in sensor networks. The different multiplexing techniques for Fiber Bragg Grating sensors will be described and compared here, including networks using optical amplification and lasing multiplexing systems.