Patent
US 11,604,396AN INDIUM PHOSPHIDE BASED OPTICAL TRANSMITTER WITH SINGLE PARAMETER DRIVEN PHASE CORRECTION FOR TEMPORAL VARIATION
Giorgio Giaretta
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 11,604,396Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. As such, like elements are referenced with like reference numerals. In various embodiments, the modulator 300 comprises an optical input waveguide 104 …
FIG. 2, a method 200 for phase correction/control of the output of an optical modulator for coherent optical signals is depicted, according to one or more …
FIG. 3A and 3B, the basic set up of one phase of the modulation is depicted in which the MZI branches have a common ground and common voltage range (Vrange). …
FIGS. 4A-4B is shown. The embodiments above are intended to be illustrative and not limiting. Additional embodiments are within the claims and inventive …
FIG. 5 depicts the effect of phase aging on process control for the model in
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical modulator with bias control for coherent optical signals, the optical modulator comprising: an optical input waveguide; an optical output waveguide; a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach- Zehnder Interferometers (MZ I), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to the optical input waveguide and coupled through an optical combiner to the optical output waveguide; a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides; a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides; a phase shifter controller comprising an energy source with a variable output controlled by the controller; and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source. Original
The optical modulator of claim 1 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The optical modulator of claim 1 wherein the plurality of I -Q sets comprises six coupled MZI with twelve corresponding MZI arms, wherein I&Q MZI have arms that each comprise an I MZI or a Q MZI. Original
The optical modulator of claim 1 further comprising: an RF driver; and a plurality of RF connections respectively connecting the RF driver to each of the plurality of RF electrodes, wherein the plurality of RF connections are configured to apply a voltage from the RF driver to the plurality of RF electrodes. Original
The optical modulator of claim 1 wherein the plurality of phase shifters positioned along the optical waveguide downstream of the plurality of RF electrodes. Original
The optical modulator of claim 1 further comprising one or more optical taps positioned downstream of the optical combiner, the one or more optical taps configured to sample an optical signal to evaluate the bias fluctuations. Original
The optical modulator of claim 1 wherein the plurality of electrical connection comprise parallel electrical connections between the controller and the individual phase shifters and wherein the individual phase shifters comprise a resistive heating element with a thin metal film. Original
A method for controlling the output of an optical modulator for coherent optical signals comprising a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach-Zehnder Interferometers (MZI), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to an optical input waveguide and coupled through an optical combiner to an optical output waveguide, a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides, and a phase shifter controller comprising an energy source with a variable output controlled by the controller with a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source, [[,]] the method comprising: applying an approximately equal power to each of the plurality of phase shifters to compensate for optical phase shifts due to temporal variations in the modulator performance. Currently amended
The method of claim 10 wherein the optical modular further comprises one or more optical taps positioned downstream of the optical combiner configured to sample the optical signal, and wherein the method further comprises: determining an optical signal bias drift for the optical signal via the one or more optical taps. Original
The method of claim 10 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The method of claim 10 wherein the optical modular further comprises a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
optical modulator with bias control for coherent optical signals
Materials described outside the worked examples.
semiconductor optical waveguide material
InP-based optical waveguide material
InP
Patent
Atlas literature
Patent
US 11,604,396Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. As such, like elements are referenced with like reference numerals. In various embodiments, the modulator 300 comprises an optical input waveguide 104 …
FIG. 2, a method 200 for phase correction/control of the output of an optical modulator for coherent optical signals is depicted, according to one or more …
FIG. 3A and 3B, the basic set up of one phase of the modulation is depicted in which the MZI branches have a common ground and common voltage range (Vrange). …
FIGS. 4A-4B is shown. The embodiments above are intended to be illustrative and not limiting. Additional embodiments are within the claims and inventive …
FIG. 5 depicts the effect of phase aging on process control for the model in
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical modulator with bias control for coherent optical signals, the optical modulator comprising: an optical input waveguide; an optical output waveguide; a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach- Zehnder Interferometers (MZ I), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to the optical input waveguide and coupled through an optical combiner to the optical output waveguide; a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides; a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides; a phase shifter controller comprising an energy source with a variable output controlled by the controller; and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source. Original
The optical modulator of claim 1 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The optical modulator of claim 1 wherein the plurality of I -Q sets comprises six coupled MZI with twelve corresponding MZI arms, wherein I&Q MZI have arms that each comprise an I MZI or a Q MZI. Original
The optical modulator of claim 1 further comprising: an RF driver; and a plurality of RF connections respectively connecting the RF driver to each of the plurality of RF electrodes, wherein the plurality of RF connections are configured to apply a voltage from the RF driver to the plurality of RF electrodes. Original
The optical modulator of claim 1 wherein the plurality of phase shifters positioned along the optical waveguide downstream of the plurality of RF electrodes. Original
The optical modulator of claim 1 further comprising one or more optical taps positioned downstream of the optical combiner, the one or more optical taps configured to sample an optical signal to evaluate the bias fluctuations. Original
The optical modulator of claim 1 wherein the plurality of electrical connection comprise parallel electrical connections between the controller and the individual phase shifters and wherein the individual phase shifters comprise a resistive heating element with a thin metal film. Original
A method for controlling the output of an optical modulator for coherent optical signals comprising a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach-Zehnder Interferometers (MZI), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to an optical input waveguide and coupled through an optical combiner to an optical output waveguide, a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides, and a phase shifter controller comprising an energy source with a variable output controlled by the controller with a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source, [[,]] the method comprising: applying an approximately equal power to each of the plurality of phase shifters to compensate for optical phase shifts due to temporal variations in the modulator performance. Currently amended
The method of claim 10 wherein the optical modular further comprises one or more optical taps positioned downstream of the optical combiner configured to sample the optical signal, and wherein the method further comprises: determining an optical signal bias drift for the optical signal via the one or more optical taps. Original
The method of claim 10 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The method of claim 10 wherein the optical modular further comprises a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
optical modulator with bias control for coherent optical signals
Materials described outside the worked examples.
semiconductor optical waveguide material
InP-based optical waveguide material
InP
Patent
Atlas literature
Patent
US 11,604,396Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. As such, like elements are referenced with like reference numerals. In various embodiments, the modulator 300 comprises an optical input waveguide 104 …
FIG. 2, a method 200 for phase correction/control of the output of an optical modulator for coherent optical signals is depicted, according to one or more …
FIG. 3A and 3B, the basic set up of one phase of the modulation is depicted in which the MZI branches have a common ground and common voltage range (Vrange). …
FIGS. 4A-4B is shown. The embodiments above are intended to be illustrative and not limiting. Additional embodiments are within the claims and inventive …
FIG. 5 depicts the effect of phase aging on process control for the model in
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical modulator with bias control for coherent optical signals, the optical modulator comprising: an optical input waveguide; an optical output waveguide; a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach- Zehnder Interferometers (MZ I), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to the optical input waveguide and coupled through an optical combiner to the optical output waveguide; a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides; a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides; a phase shifter controller comprising an energy source with a variable output controlled by the controller; and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source. Original
The optical modulator of claim 1 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The optical modulator of claim 1 wherein the plurality of I -Q sets comprises six coupled MZI with twelve corresponding MZI arms, wherein I&Q MZI have arms that each comprise an I MZI or a Q MZI. Original
The optical modulator of claim 1 further comprising: an RF driver; and a plurality of RF connections respectively connecting the RF driver to each of the plurality of RF electrodes, wherein the plurality of RF connections are configured to apply a voltage from the RF driver to the plurality of RF electrodes. Original
The optical modulator of claim 1 wherein the plurality of phase shifters positioned along the optical waveguide downstream of the plurality of RF electrodes. Original
The optical modulator of claim 1 further comprising one or more optical taps positioned downstream of the optical combiner, the one or more optical taps configured to sample an optical signal to evaluate the bias fluctuations. Original
The optical modulator of claim 1 wherein the plurality of electrical connection comprise parallel electrical connections between the controller and the individual phase shifters and wherein the individual phase shifters comprise a resistive heating element with a thin metal film. Original
A method for controlling the output of an optical modulator for coherent optical signals comprising a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach-Zehnder Interferometers (MZI), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to an optical input waveguide and coupled through an optical combiner to an optical output waveguide, a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides, and a phase shifter controller comprising an energy source with a variable output controlled by the controller with a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source, [[,]] the method comprising: applying an approximately equal power to each of the plurality of phase shifters to compensate for optical phase shifts due to temporal variations in the modulator performance. Currently amended
The method of claim 10 wherein the optical modular further comprises one or more optical taps positioned downstream of the optical combiner configured to sample the optical signal, and wherein the method further comprises: determining an optical signal bias drift for the optical signal via the one or more optical taps. Original
The method of claim 10 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The method of claim 10 wherein the optical modular further comprises a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
optical modulator with bias control for coherent optical signals
Materials described outside the worked examples.
semiconductor optical waveguide material
InP-based optical waveguide material
InP
Patent
Atlas literature
Patent
US 11,604,396Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. As such, like elements are referenced with like reference numerals. In various embodiments, the modulator 300 comprises an optical input waveguide 104 …
FIG. 2, a method 200 for phase correction/control of the output of an optical modulator for coherent optical signals is depicted, according to one or more …
FIG. 3A and 3B, the basic set up of one phase of the modulation is depicted in which the MZI branches have a common ground and common voltage range (Vrange). …
FIGS. 4A-4B is shown. The embodiments above are intended to be illustrative and not limiting. Additional embodiments are within the claims and inventive …
FIG. 5 depicts the effect of phase aging on process control for the model in
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical modulator with bias control for coherent optical signals, the optical modulator comprising: an optical input waveguide; an optical output waveguide; a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach- Zehnder Interferometers (MZ I), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to the optical input waveguide and coupled through an optical combiner to the optical output waveguide; a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides; a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides; a phase shifter controller comprising an energy source with a variable output controlled by the controller; and a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source. Original
The optical modulator of claim 1 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The optical modulator of claim 1 wherein the plurality of I -Q sets comprises six coupled MZI with twelve corresponding MZI arms, wherein I&Q MZI have arms that each comprise an I MZI or a Q MZI. Original
The optical modulator of claim 1 further comprising: an RF driver; and a plurality of RF connections respectively connecting the RF driver to each of the plurality of RF electrodes, wherein the plurality of RF connections are configured to apply a voltage from the RF driver to the plurality of RF electrodes. Original
The optical modulator of claim 1 wherein the plurality of phase shifters positioned along the optical waveguide downstream of the plurality of RF electrodes. Original
The optical modulator of claim 1 further comprising one or more optical taps positioned downstream of the optical combiner, the one or more optical taps configured to sample an optical signal to evaluate the bias fluctuations. Original
The optical modulator of claim 1 wherein the plurality of electrical connection comprise parallel electrical connections between the controller and the individual phase shifters and wherein the individual phase shifters comprise a resistive heating element with a thin metal film. Original
A method for controlling the output of an optical modulator for coherent optical signals comprising a plurality of interconnected optical waveguides comprising a plurality of I -Q sets of Mach-Zehnder Interferometers (MZI), each of the plurality of I -Q sets comprising two interference coupled MZI, wherein the plurality of I -Q sets are optically coupled through a sp li tter to an optical input waveguide and coupled through an optical combiner to an optical output waveguide, a plurality of phase shifters configured to separately interface with the plurality of interconnected optical waveguides such that at least one phase shifter of the plurality of phase shifters is interfaced separate from any RF electrode with at least one optical waveguide of the plurality of interconnected optical waveguides, and a phase shifter controller comprising an energy source with a variable output controlled by the controller with a plurality of electrical connections connecting the energy source to each of the plurality of phase shifters, wherein the plurality of electrical connections are configured to provide approximately equal power to each of the phase shifting elements from the energy source, [[,]] the method comprising: applying an approximately equal power to each of the plurality of phase shifters to compensate for optical phase shifts due to temporal variations in the modulator performance. Currently amended
The method of claim 10 wherein the optical modular further comprises one or more optical taps positioned downstream of the optical combiner configured to sample the optical signal, and wherein the method further comprises: determining an optical signal bias drift for the optical signal via the one or more optical taps. Original
The method of claim 10 wherein the interference coupled MZI of the plurality of I -Q sets comprise I nP-based optical waveguides. Original
The method of claim 10 wherein the optical modular further comprises a plurality of RF electrodes configured to interface with the plurality of interconnected optical waveguides such that at least one RF electrode of the plurality of RF electrodes is interfaced with at least one optical waveguide of the plurality of interconnected optical waveguides. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
optical modulator with bias control for coherent optical signals
Materials described outside the worked examples.
semiconductor optical waveguide material
InP-based optical waveguide material
InP