CHIP-SCALE TWO-DIMENSIONAL OPTICAL PHASED ARRAY WITH SIMPLIFIED CONTROLS
First Claim
1. A device comprising:
- an optical splitter comprising a plurality of splitter outputs, said plurality of splitter outputs being out of phase and comprising a non-uniform phase front; and
a one-dimensional phase compensation array communicating with said optical splitter, said phase compensation array comprising a plurality of serpentine optical waveguides, said phase compensation array receiving the non-uniform phase front and outputting a uniform phase front,wherein one of said optical splitter and said phase compensation array comprises an optical input signal, said optical input signal comprising a fixed free-space wavelength,whereineach serpentine waveguide of said plurality of serpentine waveguides comprises a width greater than the free-space wavelength.
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Accused Products
Abstract
A device includes an optical splitter comprising a plurality of splitter outputs. The splitter outputs are out of phase and include a non-uniform phase front. The device includes a one-dimensional phase compensation array communicating with the optical splitter. The phase compensation array receives the non-uniform phase front and outputs a uniform phase front. The phase compensation array includes a plurality of array outputs. The device includes a tunable linear gradient phase shifter communicating with said phase compensation array to impart a linearly-varying phase shift across said plurality of array outputs, thereby steering a beam along a first angle in a first plane. The device includes a waveguide grating out-coupler communicating with said linear gradient phase shifter, and a uniform phase shifter communicating with the waveguide grating out-coupler. The uniform phase shifter steers the flat phase front along a second angle in a second plane perpendicular to said first plane.
16 Citations
20 Claims
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1. A device comprising:
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an optical splitter comprising a plurality of splitter outputs, said plurality of splitter outputs being out of phase and comprising a non-uniform phase front; and a one-dimensional phase compensation array communicating with said optical splitter, said phase compensation array comprising a plurality of serpentine optical waveguides, said phase compensation array receiving the non-uniform phase front and outputting a uniform phase front, wherein one of said optical splitter and said phase compensation array comprises an optical input signal, said optical input signal comprising a fixed free-space wavelength, wherein each serpentine waveguide of said plurality of serpentine waveguides comprises a width greater than the free-space wavelength. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device comprising:
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a waveguide grating out-coupler; and a tunable uniform phase shifter communicating with said waveguide grating out-coupler, said tunable uniform phase shifter steering a flat phase front along a first angle in a first plane. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification