Spatially multiplexed acoustic modem

A spatially multiplexed acoustic modem for distributed fiber optic sensing (DFOS) system comprising:

• circuitry configured to
• generate spatially multiplexed physical vibrations in a plurality of vibrators, the vibrators located such that the generated vibrations from each individual one of the plurality of vibrators are received by an optical sensor fiber of the DFOS system at a different location along a length of the optical sensor fiber of the DFOS system;
• wherein the generated physical vibrations are simultaneously detected by the DFOS system;
• wherein the spatially multiplexed acoustic modem is radio-controlled and the circuitry is further configured to receive wireless radio signals and adjust operational settings of the spatially multiplexed acoustic modem based on the received wireless radio signals;
• wherein the spatially multiplexed acoustic modem is a two-way acoustic modem configured for communication via acoustic vibrations with the DFOS system and for receiving wireless radio signals for control;
• and
• wherein the spatially multiplexed acoustic modem further comprises a power harvesting unit configured to wirelessly tap into high power lines to charge the acoustic modem and power one or more sensors and said plurality of vibrators.