Integrated optical transceiver with electronically controlled optical beamsteering

United States Patent

August 22, 2017
View the Complete Patent at the US Patent & Trademark Office
Nanoantenna Phased Array and Transceiver
Next-Generation Automotive
A beam-steering optical transceiver is provided. The transceiver includes one or more modules, each comprising an antenna chip and a control chip bonded to the antenna chip. Each antenna chip has a feeder waveguide, a plurality of row waveguides that tap off from the feeder waveguide, and a plurality of metallic nanoantenna elements arranged in a two-dimensional array of rows and columns such that each row overlies one of the row waveguides. Each antenna chip also includes a plurality of independently addressable thermo-optical phase shifters, each configured to produce a thermo-optical phase shift in a respective row. Each antenna chip also has, for each row, a row-wise heating circuit configured to produce a respective thermo-optic phase shift at each nanoantenna element along its row. The control chip includes controllable current sources for the independently addressable thermo-optical phase shifters and the row-wise heating circuits.
October 28, 2016
G02B 6/12 (20060101); G02F 1/295 (20060101); H04B 10/40 (20130101); G02B 6/122 (20060101); G02B 6/134 (20060101); G02F 1/29 (20060101);
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was developed under Contract DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.