US 12,261,685 B2
Metastructured photonic devices for multiplexing or demultiplexing of optical signals
Sunil Pai, San Jose, CA (US); and Yi-Kuei Ryan Wu, San Jose, CA (US)
Assigned to X Development LLC, Mountain View, CA (US)
Filed by X Development LLC, Mountain View, CA (US)
Filed on Aug. 12, 2022, as Appl. No. 17/887,185.
Prior Publication US 2024/0056211 A1, Feb. 15, 2024
Int. Cl. H04J 14/02 (2006.01)
CPC H04J 14/0224 (2013.01) [H04J 14/0307 (2023.08)] 20 Claims
OG exemplary drawing
 
1. A photonic device, comprising:
input region adapted to receive an optical signal including a multiplexed channel, the multiplexed channel characterized by a distinct wavelength;
a dispersive region, optically coupled with the input region to receive the optical signal, the dispersive region including a plurality of sub-regions defined by an inhomogeneous arrangement of a first material and a second material; and
a plurality of output regions, optically coupled with the input region via the dispersive region;
wherein:
the plurality of sub-regions include an input channel section, an in-coupler section, a parallel channel section, an out-coupler section, and an output channel section; and
the plurality of sub-regions together configure the photonic device to demultiplex the optical signal and to isolate the multiplexed channel at a first output region of the plurality of output regions.