Optical hybrid
AssigneeElenion Technologies, LLC
InventorsYangjin Ma, Yang Liu
Life of this patent
Estimating the term…
Abstract
An optical circuit capable of operating as a 90° optical hybrid includes a phase-symmetric optical splitter and a 90° optical splitter, and two 2×2 optical couplers as optical combiners. The input ports of the optical combiners and the output ports of the optical splitters face a common area therebetween, with the optical splitters interposed between optical combiners as viewed along the circumference of the common area. The output ports of each optical splitter is connected to closest input ports of the optical combiners with optical waveguides of a same length. The length of the waveguides may be minimized when the optical couplers and the optical splitters are disposed in a cross-like configuration.
Claims20
An optical circuit comprising:
- two optical splitters, each comprising an input port and two output ports;
- two optical combiners, each comprising two input ports and at least one output port;
- and,
- four optical waveguides separately connecting the output ports of the two optical splitters to the input ports of the two optical combiners in a non-intersecting manner,
- wherein the two optical combiners and one of the two optical splitters comprise each a 90° optical coupler, and the other of the two optical splitters is a phase-symmetric optical splitter.
Dependencies are inferred from the claim text.