David W Nielsen

US Patent:

20210067246, Mar 4, 2021

Filed:

Aug 30, 2019

Appl. No.:

16/556881

Inventors:

- Arlington VA, US
Andrew Russell Grant - Freehold NJ, US
David C. Nielsen - Bridgewater NJ, US

International Classification:

H04B 10/11
H04B 10/25
H04B 10/50
H04B 10/69

Abstract:

Methods, devices, and systems are described for free space optical communication. An example device can comprise a laser, a modulator configured to cause the laser to output an optical signal comprising a data signal and a beacon signal, a defocuser optically coupled to the laser and configured to receive the optical signal and control a beam divergence of the optical signal, an optical interface configured to receive the optical signal from the defocuser and output the optical signal into free space, and a controller configured to cause the defocuser to adjust the beam divergence based on an operational mode of the laser.