US 12,189,180 B2
Photonic integrated circuit multi-wavelength phase modulator networks
Stephen P. Palese, Redondo Beach, CA (US)
Assigned to Raytheon Company, Tewksbury, MA (US)
Filed by Raytheon Company, Waltham, MA (US)
Filed on Jun. 14, 2022, as Appl. No. 17/806,873.
Prior Publication US 2023/0400628 A1, Dec. 14, 2023
Int. Cl. G02B 6/12 (2006.01); G02B 27/00 (2006.01); G02F 1/01 (2006.01); G02F 1/29 (2006.01)
CPC G02B 6/12004 (2013.01) [G02B 6/12014 (2013.01); G02B 2006/12035 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a photonic integrated circuit comprising an optical phased array, the optical phased array comprising multiple unit cells, each unit cell comprising:
at least one antenna element configured to transmit or receive multiple optical signals simultaneously, the multiple optical signals having spectrally-distinct wavelengths or wavelength ranges;
at least one signal pathway configured to transport the optical signals to or from the at least one antenna element; and
a phase modulator configured to modify phases of the optical signals being transported through the at least one signal pathway;
wherein each unit cell is configured to provide correlated phase shifts to the optical signals having the spectrally-distinct wavelengths or wavelength ranges.