Patent ID: 8660431

Claim:
A method for establishing a terahertz link, comprising: receiving, by a processor, a plurality of terahertz signals from a plurality of detectors, where a liquid lens is deployed with each of the plurality of detectors; determining, by the processor, for one terahertz signal of the plurality of terahertz signals, if the one terahertz signal is out of focus; applying, by the processor, a corrective voltage to a corresponding liquid lens that corresponds to a corresponding one terahertz signal that is out of focus, wherein the corrective voltage adjusts a focus of the corresponding one terahertz signal; measuring, by the processor, a signal-to-noise ratio of each of the plurality of terahertz signals; and establishing, by the processor, the terahertz link via one of the plurality of terahertz signals with a highest signal-to-noise ratio.