US 2021/0263387 A1 · CALIBRATING AND CONTROLLING NESTED MACH-ZEHNDER INTERFEROMETER THAT INCLUDES PRE-STAGES

Abstract

A nested Mach-Zehnder device may comprise a parent pre-stage interferometer, a parent interferometer coupled to the parent pre-stage interferometer, a first child pre-stage interferometer, a first child interferometer coupled to the first child pre-stage interferometer, a second child pre-stage interferometer, a second child interferometer coupled to the second child pre-stage interferometer, wherein a phase of each interferometer is electrically adjustable. The nested Mach-Zehnder device may comprise one or more components to: determine a performance parameter associated with a constellation diagram generated by the nested Mach-Zehnder device; determine that the performance parameter does not satisfy a threshold, and cause a phase of at least one pre-stage interferometer, of the parent pre-stage interferometer, the first child pre-stage interferometer, or the second child pre-stage interferometer, to be electrically adjusted to cause the performance parameter to satisfy the threshold.

Claims20

Dependent claims

A nested Mach-Zehnder device, comprising:

a parent pre-stage interferometer;
a parent interferometer coupled to the parent pre-stage interferometer;
a first child pre-stage interferometer coupled to a first branch of the parent interferometer;
a first child interferometer coupled to the first child pre-stage interferometer;
a second child pre-stage interferometer coupled to a second branch of the parent interferometer;
a second child interferometer coupled to the second child pre-stage interferometer,
wherein a phase of each interferometer is electrically adjustable;
and
one or more components to:
determine a performance parameter associated with a constellation diagram generated by the nested Mach-Zehnder device;
determine that the performance parameter does not satisfy a threshold;
and
cause, based on determining that the performance parameter does not satisfy the threshold, a phase of at least one pre-stage interferometer, of the parent pre-stage interferometer, the first child pre-stage interferometer, or the second child pre-stage interferometer, to be electrically adjusted to cause the performance parameter to satisfy the threshold.

10 more elements

Dependencies are inferred from the claim text.

Calibrating and controlling nested mach-zehnder interferometer that includes pre-stages

Life of this patent

Calibrating and controlling nested mach-zehnder interferometer that includes pre-stages

Life of this patent

Abstract

Claims20