Patent ID: 11863206
Assignee: VOYANT PHOTONICS, INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An optical phased array device comprising:
an array of optical phase shifters comprising a plurality of rows of optical phase shifters, and a plurality of columns of optical phase shifters;
a plurality of digital to analog converters (DACs), each one of the plurality of DACs configured to output an independent voltage or current onto one of the plurality of rows of optical phase shifters;
a plurality of ground buses, each one of the plurality of ground buses configured to connect one of the plurality of columns of optical phase shifters to a common ground;
a multiplexer configured to selectively connect one of the plurality of ground buses to the common ground, while disconnecting others of the plurality of ground buses;
a processor; and
a non-transitory memory for storing instructions, which when for executed by the processor:
sequentially selects a different one of the plurality of columns of optical phase shifters to connect to the common ground, while disconnecting any other of the plurality of ground buses; and
updates the voltage or current for each of the plurality of DACs based on which one of the plurality of columns of optical phase shifters has been selected.