Photonic filter bank system and method of use
First Claim
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1. A method for optical computation comprising:
- throughout a time period, controlling a filter bank based on a plurality of weights, comprising;
based on a first weight of the plurality, determining a first control signal;
based on a second weight of the plurality, determining a second control signal;
providing the first control signal to a first optical filter of the filter bank, wherein the first optical filter is associated with a first optical characteristic; and
providing the second control signal to a second optical filter of the filter bank, wherein the second optical filter is associated with a second optical characteristic different from the first optical characteristic;
during the time period, receiving an optical input signal at an input waveguide of the filter bank, wherein the optical input signal comprises;
a first portion having the first optical characteristic; and
a second portion having the second optical characteristic; and
during the time period, in response to receiving the optical input signal at the input waveguide;
at the first optical filter, based on the first control signal, coupling a first signal subportion of the first portion from the input waveguide to an output waveguide of the filter bank;
at the second optical filter, based on the second control signal, coupling a second signal subportion of the second portion from the input waveguide to the output waveguide;
at the second optical filter, coupling a first leakage subportion of the first portion from the input waveguide to the output waveguide; and
at the output waveguide, outputting the first signal subportion, the second signal subportion, and the first leakage subportion, wherein the first signal subportion is phase-shifted with respect to the first leakage subportion.
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Abstract
A system for photonic computing, preferably including: an input module, computation module, and/or control module, wherein the computation module preferably includes one or more filter banks and/or detectors. A photonic filter bank system, preferably including two waveguides and a plurality of optical filters arranged between the waveguides. A method for photonic computing, preferably including: controlling a computation module; controlling an input module; and/or receiving outputs from the computation module.
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Citations
12 Claims
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1. A method for optical computation comprising:
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throughout a time period, controlling a filter bank based on a plurality of weights, comprising; based on a first weight of the plurality, determining a first control signal; based on a second weight of the plurality, determining a second control signal; providing the first control signal to a first optical filter of the filter bank, wherein the first optical filter is associated with a first optical characteristic; and providing the second control signal to a second optical filter of the filter bank, wherein the second optical filter is associated with a second optical characteristic different from the first optical characteristic; during the time period, receiving an optical input signal at an input waveguide of the filter bank, wherein the optical input signal comprises; a first portion having the first optical characteristic; and a second portion having the second optical characteristic; and during the time period, in response to receiving the optical input signal at the input waveguide; at the first optical filter, based on the first control signal, coupling a first signal subportion of the first portion from the input waveguide to an output waveguide of the filter bank; at the second optical filter, based on the second control signal, coupling a second signal subportion of the second portion from the input waveguide to the output waveguide; at the second optical filter, coupling a first leakage subportion of the first portion from the input waveguide to the output waveguide; and at the output waveguide, outputting the first signal subportion, the second signal subportion, and the first leakage subportion, wherein the first signal subportion is phase-shifted with respect to the first leakage subportion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification