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US 2019/0379476 A1Published application
Broadband high-speed wavelength-division multiplexed receiver using multiple photodetectors per channel
AssigneeSkorpios Technologies, Inc.
InventorsGuoliang Li, Murtaza Askari
Life of this patent
Estimating the term…
Abstract
An optical receiver, used in wavelength-division multiplexing, has multiple photodetectors per channel. The optical receiver comprises a demultiplexer to separate incoming light into different output waveguides, one output waveguide for each channel. A splitter is used in each output waveguide to split each output waveguide into two or more branches. A separate photodetector is coupled with each branch so that two or more photodetectors are used to measure each channel.
Claims21
(canceled)
An optical receiver comprising:
- a waveguide optically coupled with a demultiplexer, wherein the waveguide has a width;
- a splitter that divides the waveguide into a first branch and a second branch, wherein the first branch and the second branch each have a width narrower than the width of the waveguide;
- a first photodetector optically coupled with the first branch;
- and
- a second photodetector optically coupled with the second branch, wherein the second photodetector is electrically coupled in parallel with the first photodetector.
2 more elements
An optical receiver comprising:
- a first photodetector having a width equal to or less than 2 microns;
- and
- a second photodetector having a width equal to or less than 2 microns, wherein the second photodetector is electrically coupled in parallel with the first photodetector.
A method comprising:
- guiding a beam of light in a waveguide to propagate from a demultiplexer toward a splitter;
- splitting the beam of light into a first branch and a second branch;
- guiding light in the first branch toward a first photodetector;
- guiding light in the second branch toward a second photodetector;
- detecting light using the first photodetector;
- and
- detecting light using the second photodetector, wherein the first photodetector and the second photodetector are electrically coupled in parallel.
4 more elements
Dependencies are inferred from the claim text.