US 9,810,862 B2
Free space optical (FSO) system
J. Elon Graves, Los Gatos, CA (US); William Dickson, Granville, OH (US); Greg Mitchell, Elk Grove, CA (US); Andy McClaren, Santa Cruz, CA (US); and Dave Pechner, San Jose, CA (US)
Assigned to SA Photonics, Inc., Los Gatos, CA (US)
Filed by SA Photonics, Inc., Los Gatos, CA (US)
Filed on Aug. 22, 2016, as Appl. No. 15/243,858.
Claims priority of provisional application 62/208,561, filed on Aug. 21, 2015.
Claims priority of provisional application 62/208,565, filed on Aug. 21, 2015.
Claims priority of provisional application 62/348,342, filed on Jun. 10, 2016.
Prior Publication US 2017/0052334 A1, Feb. 23, 2017
Int. Cl. G02B 6/32 (2006.01); G02B 6/42 (2006.01); H04B 10/112 (2013.01)
CPC G02B 6/4206 (2013.01) [G02B 6/32 (2013.01); G02B 6/422 (2013.01); H04B 10/1123 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A free space optical node configured to receive a received optical beam from and simultaneously transmit a transmitted optical beam to a remote free space optical node, comprising:
a fiber coupled to receive and transmit electronics at an initial end, and comprising a terminal end of the fiber positioned at a focal plane, the fiber passing the transmit and received optical beams between the initial and terminal ends of the fiber;
fore optics positioned along an optical path of at least a portion of the received optical beam, the fore optic creating a plurality of defocused images at a second plane, that overlap each other at the second plane; and
a differential wave front sensor positioned at the second plane.