Granted Patent B2

US 12,499,173 · App. 17/338,381 · Granted Dec 16, 2025

Inventors: Michael Dubrovsky (Somerville, MA); Diedrik Rene Vermeulen (Somerville, MA)

Assignee: SiPhox, Inc.

G06F17/16G06E1/045G06E3/008G02F1/212

Abstract

Claims (42)

1 . A system for optical calculation with asynchronous feedback, the system comprising:

at least a first light source configured to output at least a first optical output having a first wavelength;

at least an optical modulator located down beam from the at least a first light source and configured to modulate the at least a first optical output, wherein the at least an optical modulator is further configured to modulate a light pulse characteristic of the at least a first optical output, wherein the light pulse characteristic comprises one or more of a pulsed duration, repetition rate, and duty cycle;

at least an optical matrix multiplier located down beam from the at least an optical modulator configured to:

accept the at least a first optical output; and

generate a first matrix multiplication output as a function of the at least a first optical output;

at least a first photodetector located down beam from the at least an optical matrix multiplier configured to:

measure the first matrix multiplication output; and

generate a first electrical multiplication output signal as a function of the first matrix multiplication output;

an asynchronous feedback circuit electrically connected to the at least a first photodetector and at least one of the at least an optical modulator and the at least an optical matrix multiplier, wherein the asynchronous feedback circuit is configured to:

calculate a first feedback signal as a function of the first electrical multiplication output signal; and

provide the first feedback signal to the at least one of the at least an optical modulator and the at least an optical matrix multiplier; and

a computing device communicative with the at least an optical matrix multiplier, wherein the computing device is configured to evaluate, using the at least an optical matrix multiplier, a hash function comprising an iterated composition of a security hash algorithm and a weighting function.

2 . The system of claim 1 wherein the asynchronous feedback circuit further comprises an analog circuit in communication with the at least a first photodetector and the at least one of the at least an optical modulator and the at least an optical matrix multiplier.

3 . The system of claim 1 , wherein the asynchronous feedback circuit is configured to calculate the first feedback signal as a non-linear function of the first electrical multiplication output signal.

4 . The system of claim 1 , wherein the at least an optical matrix multiplier comprises a plurality of Mach-Zehnder Interferometers (MZIs) arranged in a mesh.

5 . The system of claim 1 further comprising at least a second light source configured to output at least a second optical output having a second wavelength substantially different from the first wavelength, wherein:

the at least an optical modulator is configured to modulate the at least a second optical output; and

the at least an optical matrix multiplier is configured to generate a second matrix multiplication output as a function of the at least a second optical output.

6 . The system of claim 5 further comprising at least a second photodetector located down beam from the at least an optical matrix multiplier and configured to:

measure the second matrix multiplication output; and

generate a second electrical multiplication output signal as a function of the second matrix multiplication output.

7 . The system of claim 5 further comprising a wavelength multiplexor disposed down beam from the at least a first light source and the at least a second light source and up beam from the at least an optical modulator, wherein the wavelength multiplexor is configured to substantially combine the at least a first optical output and the at least a second optical output.

8 . The system of claim 1 further comprising a beam splitter configured to split at least a beam from the at least a first light source into two or more beams, wherein the beam splitter comprises an evanescent wave coupler.

9 . A method of optical calculation with asynchronous feedback, the method comprising:

outputting, using at least a first light source, at least a first optical output having a first wavelength;

modulating, using at least an optical modulator located down beam from the at least a first light source, the at least a first optical output, wherein the at least an optical modulator is further configured to modulate a light pulse characteristic of the at least a first optical output, wherein the light pulse characteristic comprises one or more of a pulsed duration, repetition rate, and duty cycle;

generating, using at least an optical matrix multiplier located down beam from the at least an optical modulator, a first matrix multiplication output as a function of the at least a first optical output;

generating, using at least a first photodetector located down beam from the at least an optical matrix multiplier, a first electrical multiplication output signal as a function of the first matrix multiplication output;

calculating, by an asynchronous feedback circuit electrically connected to the at least a first photodetector and at least one of the at least an optical modulator and the at least an optical matrix multiplier, a first feedback signal as a function of the first electrical multiplication output signal;

providing, by the asynchronous feedback circuit, the first feedback signal to the at least one of the at least an optical modulator and the at least an optical matrix multiplier; and

evaluating, by a computing device communicative with the at least an optical matrix multiplier, using the at least an optical matrix multiplier, a hash function comprising an iterated composition of a security hash algorithm and a weighting function.

10 . The method of claim 9 wherein the asynchronous feedback circuit further comprises an analog circuit in communication with the at least a first photodetector and the at least one of the at least an optical modulator and the at least an optical matrix multiplier.

11 . The method of claim 9 further comprising calculating, by the asynchronous feedback circuit, the first feedback signal as a non-linear function of the first electrical multiplication output signal.

12 . The method of claim 9 , wherein the at least an optical matrix multiplier comprises a plurality of Mach-Zehnder Interferometers (MZIs) arranged in a mesh.

13 . The method of claim 9 further comprising:

outputting, using at least a second light source, at least a second optical output having a second wavelength substantially different from the first wavelength;

modulating, using the at least an optical modulator, the at least a second optical output; and

generating, by the at least an optical matrix multiplier, a second matrix multiplication output as a function of the at least a second optical output.

14 . The method of claim 13 further comprising generating, by at least a second photodetector located down beam from the at least an optical matrix multiplier, a second electrical multiplication output signal as a function of the second matrix multiplication output.

15 . The method of claim 13 further comprising a wavelength multiplexor disposed down beam from the at least a first light source and the at least a second light source and up beam from the at least an optical modulator, wherein the wavelength multiplexor is configured to substantially combine the at least a first optical output and the at least a second optical output.

16 . The method of claim 9 further comprising splitting, using a beam splitter, at least a beam from the at least a first light source into two or more beams, wherein the beam splitter comprises an evanescent wave coupler.

Assignments (4)

Continuity (2)

References Cited (20)