US 12,276,728 B2
Systems and methods for polarization separation in remote imaging systems
Prakash Koonath, La Crescenta, CA (US); Shuren Hu, Arcadia, CA (US); Mehdi Asghari, La Canada Flintridge, CA (US); Bradley Jonathan Luff, La Canada Flintridge, CA (US); and Behnam Behroozpour, South San Francisco, CA (US)
Assigned to SiLC Technologies, Inc., Monrovia, CA (US)
Filed by SiLC Technologies, Inc., Monrovia, CA (US)
Filed on Sep. 6, 2023, as Appl. No. 18/242,519.
Application 18/242,519 is a division of application No. 17/062,618, filed on Oct. 4, 2020, granted, now 11,789,149.
Prior Publication US 2023/0417910 A1, Dec. 28, 2023
Int. Cl. G01C 3/08 (2006.01); G01S 7/481 (2006.01); G01S 7/499 (2006.01); G01S 17/32 (2020.01); G02B 6/12 (2006.01); G02B 6/27 (2006.01); G02B 6/28 (2006.01); G02F 1/01 (2006.01)
CPC G01S 17/32 (2013.01) [G01S 7/481 (2013.01); G01S 7/4817 (2013.01); G01S 7/499 (2013.01); G02B 6/12004 (2013.01); G02B 6/2773 (2013.01); G02B 6/2813 (2013.01); G02F 1/0136 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electro-optical system for polarization separation, the system comprising:
a birefringent crystal configured to: receive at least one input signal; and
generate, based on the at least one input signal, a first polarized portion and
a second polarized portion of the at least one input signal; and
a photonic integrated circuit (PIC) configured to:
receive, from the birefringent crystal and via a first input waveguide, the first polarized portion of the at least one input signal;
receive, from the birefringent crystal and via a second input waveguide, the second polarized portion of the at least one input signal, and wherein a separation distance associated with the first input waveguide and the second input waveguide is based on a dimension of the birefringent crystal;
transmit an output signal via an output waveguide, and wherein the at least one input signal is associated with a reflection of the output signal from an object located within a field-of-view (FOV) of the electro-optical system; and
receive polarized portions of additional input signals, via corresponding input waveguides, and wherein the polarized portions of the additional input signals are associated with at least one reflection of the output signal from a different object located within the FOV of the electro-optical system.