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US 2024/0348006 A1Published application
Silicon photonic symmetric distributed feedback laser
AssigneeOpenLight Photonics, Inc.
InventorsJohn Parker, Molly Piels, Hanxing Shi
Life of this patent
Estimating the term…
Abstract
A symmetric distributed feedback (DFB) laser that is integrated in a silicon based photonic integrated circuit can output light from both sides of the symmetric DFB laser onto waveguides. The light in the waveguides can be phase adjusted and combined using an optical coupler. The symmetric DFB laser can generate light and symmetrically output light onto different lanes of a multi-lane transmitter.
Claims20
A silicon-based photonic integrated circuit comprising:
- a silicon distributed feedback laser comprising a first output side and a second output side that is opposite of the first output side;
- a plurality of silicon waveguides comprising a first waveguide to receive a first light beam from the first output side and a second waveguide to receive a second light beam from the second output side;
- a plurality of modulators comprising a first modulator to modulate the first light beam and a second modulator to modulate the second light beam;
- and
- a plurality of output ports comprising a first output port to output the modulated first light beam on a first lane and a second output port to output the modulated second light beam on a second lane separate from the first lane.
2 more elements
A method for generating light in a silicon-based photonic integrated circuit, the method comprising:
- generating, by a silicon-based distributed feedback laser in the silicon-based photonic integrated circuit, a first light beam and a second light beam;
- outputting the first light beam from a first output side of the silicon-based distributed feedback laser and outputting the second light beam from a second output side of the silicon-based distributed feedback laser, the first output side and the second output side being opposite sides of the silicon-based distributed feedback laser;
- receiving the first light beam using a first waveguide in the silicon-based photonic integrated circuit;
- receiving the second light beam using a second waveguide in the silicon-based photonic integrated circuit;
- modulating the first light beam using a first modulator;
- modulating the second light beam using a second modulator;
- outputting the modulated first light beam on a first lane using a first output port;
- and
- outputting the modulated second light beam on a second lane, separate from the first lane, using a second output port.
6 more elements
A silicon photonic integrated circuit comprising:
- a silicon distributed feedback laser comprising a first output side and a second output side that is opposite of the first output side;
- a plurality of silicon waveguides comprising a first waveguide to receive a first light beam from the first output side and a second waveguide to receive a second light beam from the second output side;
- a heater to apply heat to the first waveguide to phase match the first light beam and the second light beam;
- a silicon combiner to combine the first light beam from the first output side with the second light beam from the second output side into a combined light beam;
- and
- a silicon output waveguide to output the combined light beam.
3 more elements
Dependencies are inferred from the claim text.