US 11,923,478 B2
Ultra-wideband, free space optical communication apparatus
Mohammad Ali Khatibzadeh, Raleigh, NC (US); and ARunesh Goswami, Raleigh, NC (US)
Assigned to LUMEOVA, INC., Raleigh, NC (US)
Filed by LUMEOVA, INC., Raleigh, NC (US)
Filed on Jan. 24, 2022, as Appl. No. 17/582,201.
Application 17/582,201 is a continuation of application No. 17/126,149, filed on Dec. 18, 2020, granted, now 11,233,172.
Application 17/126,149 is a continuation of application No. 16/889,844, filed on Jun. 2, 2020, granted, now 10,879,421, issued on Dec. 29, 2020.
Application 16/889,844 is a continuation of application No. 16/658,242, filed on Oct. 21, 2019, granted, now 10,672,950, issued on Jun. 2, 2020.
Application 16/658,242 is a continuation of application No. 16/379,841, filed on Apr. 10, 2019, granted, now 10,453,994, issued on Oct. 22, 2019.
Application 16/379,841 is a continuation of application No. 15/862,959, filed on Jan. 5, 2018, granted, now 10,263,146, issued on Apr. 16, 2019.
Application 15/862,959 is a continuation of application No. PCT/US2017/016916, filed on Feb. 8, 2017.
Claims priority of provisional application 62/293,291, filed on Feb. 9, 2016.
Prior Publication US 2022/0158027 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/00 (2013.01); H01L 31/167 (2006.01); H01L 33/00 (2010.01); H01L 33/04 (2010.01); H01L 33/06 (2010.01); H01L 33/14 (2010.01); H01L 33/30 (2010.01); H04B 10/11 (2013.01); H04B 10/114 (2013.01); H04B 10/116 (2013.01); H04B 10/40 (2013.01); H04B 10/50 (2013.01); H04B 10/60 (2013.01); H01L 25/16 (2023.01); H01L 27/15 (2006.01); H01L 33/28 (2010.01); H04H 20/71 (2008.01)
CPC H01L 33/14 (2013.01) [H01L 31/167 (2013.01); H01L 33/0025 (2013.01); H01L 33/04 (2013.01); H01L 33/06 (2013.01); H01L 33/145 (2013.01); H01L 33/30 (2013.01); H04B 10/11 (2013.01); H04B 10/1143 (2013.01); H04B 10/1149 (2013.01); H04B 10/116 (2013.01); H04B 10/40 (2013.01); H04B 10/502 (2013.01); H04B 10/60 (2013.01); H01L 25/167 (2013.01); H01L 27/156 (2013.01); H01L 33/28 (2013.01); H04H 20/71 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An array based free space optical (FSO) communication apparatus, comprising:
a plurality of optical receivers configured in an array to simultaneously receive a transmitted FSO communication signal for increased optical conversion gain, wherein each optical receiver comprises:
an amplifier; and
an optical detector electrically coupled with an input of the amplifier, the optical detector comprising an optical absorption layer positioned over a substrate, wherein the optical absorption layer comprises at least one of indium gallium arsenide (InGaAs), indium gallium nitride (InGaN), indium gallium antimonide (InGaSb), gallium arsenide (GaAs), gallium nitride (GaN), gallium antimonide (GaSb), gallium arsenide phosphide (GaAsP), and aluminum gallium nitride (AlGaN);
and
combiner circuitry having a plurality of inputs and a combiner output, wherein each input is electrically coupled with an output of each amplifier.