Enhanced disturbance monitoring and localization enabled by digital signal processing (DSP)-based laser phase noise estimation

A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising:

• obtaining information associated with electrical field signals, wherein the electrical field signals have been resolved based on coherent detection of time-delayed optical fields, wherein the time-delayed optical fields result from substantially orthogonal optical fields one of which has been delayed, and wherein the substantially orthogonal optical fields have been derived from an output of an optical source;
• and
• causing phase noise of the optical source to be estimated, wherein estimation of the phase noise is based on independent phases of the substantially orthogonal optical fields, and wherein the estimation of the phase noise facilitates disturbance detection and localization and provides a temporal profile of phase noise values over a particular time period.

A system, comprising at least a first component configured to derive substantially orthogonal optical fields from an output of an optical source and at least a second component configured to implement a delay on one of the substantially orthogonal optical fields, resulting in time-delayed optical fields that, when received at a receiver, facilitate estimation of phase noise of the optical source, wherein the estimation of the phase noise is based on independent phases of the substantially orthogonal optical fields, and wherein the estimation of the phase noise provides a temporal profile of phase noise values over a particular time period.