Abstract: The unmanned aerial vehicle (UAV) tethered with an optical fiber is an unmanned aerial vehicle, drone or the like carrying an optical device which is tethered to an external light source. The light source may be a ground-based laser. The optical device is connected to, and optically coupled with, the light source by a tether including at least one optical fiber. A stabilizer may be mounted on the optical device for stabilizing orientation and direction thereof. The optical device may include at least one collimator and at least one focusing lens for shaping and focusing the received light for output to a selected target.

Abstract: The fiber optic communication system for vehicles is a system for extending communication capabilities for vehicles, such as ships and other watercraft, for example, through connection to an external wireless communication module using a fiber optic cable. The fiber optic communication system for vehicles includes a first fiber optic converter adapted to be carried by the vehicle and further adapted for electrical connection to at least one user device. The fiber optic communication system for vehicles further includes a second fiber optic converter adapted to be positioned remotely from the vehicle and the first fiber optic converter. At least one fiber optic cable optically couples the first fiber optic converter and the second fiber optic converter, and a wireless communication module is in electrical communication with the second fiber optic converter.

Abstract: The drone-based radio-over-fiber system provides an unmanned aerial vehicle (AV), preferably a multi-rotor drone, connected to a base station by a tether including an optical fiber. A radio frequency-over-fiber system is used for bidirectional data communications between at least one radio frequency (RF) transmitter at the base station and at least one antenna mounted on the drone through the optical fiber in the tether. The system includes wave division multiplexers/demultiplexers that permit ultrahigh bandwidth communication over the tether. An embodiment of the system for 2×2 multiple-input, multiple-output (MIMO) signals in the 700 MHz LTE band is described.