US 12,081,276 B2
Optical coherent receiver on a chip
Meer Nazmus Sakib, Berkeley, CA (US); Peicheng Liao, Santa Clara, CA (US); Ranjeet Kumar, San Jose, CA (US); Duanni Huang, San Jose, CA (US); Haisheng Rong, Pleasanton, CA (US); Harel Frish, Albuquerque, NM (US); John Heck, Berkeley, CA (US); Chaoxuan Ma, Sunnyvale, CA (US); Hao Li, Hillsboro, OR (US); and Ganesh Balamurugan, Hillsboro, OR (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Dec. 23, 2020, as Appl. No. 17/133,360.
Claims priority of provisional application 63/041,478, filed on Jun. 19, 2020.
Prior Publication US 2021/0119710 A1, Apr. 22, 2021
Int. Cl. H04B 10/61 (2013.01)
CPC H04B 10/6165 (2013.01) [H04B 10/612 (2013.01); H04B 10/6164 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An optical coherent receiver on a chip comprising:
an optical amplifier on the chip, wherein the optical amplifier is to receive an optical signal and to generate an amplified signal based on the received optical signal;
a local oscillator (LO) on the chip, wherein the LO is to generate an LO optical signal;
an optical 90° hybrid on the chip, wherein the optical 90° hybrid is optically coupled with the optical amplifier and the LO on the chip, and wherein the optical 90° hybrid is to receive the amplified signal and the LO optical signal, and to output a tuned optical signal; and
a silicon waveguide photodetector (SiPD) on the chip, wherein the SiPD is optically coupled with the optical hybrid on the chip, and wherein the SiPD is to detect data on the tuned optical signal.