Patent ID: 11949458
Assignee: SEQUENT LOGIC, LLC
Field: Measurement (Instruments)
Classification: CPC G  H | IPC H

Claim 15:
16. A method of performing Optical Code Delay Reflectometry (OCoDR), the method comprising:
modulating a Zadoff-Chu sequence on incident electromagnetic (EM) radiation to obtain modulated EM radiation, the incident EM radiation and the modulated EM radiation including continuous-wave EM radiation;
injecting the modulated EM radiation into an optical fiber;
interfering reflected EM radiation received from the optical fiber responsive to the modulated EM radiation with reference EM radiation to generate interfered EM radiation;
converting the interfered EM radiation to an electronic signal comprising an interferogram;
digitizing the electronic signal to generate a digitized interferogram;
determining a complex conjugate of one of the Zadoff-Chu sequence or the digitized interferogram;
multiplying the complex conjugate of the one of the Zadoff-Chu sequence or the digitized interferogram with the other of the Zadoff-Chu sequence or the digitized interferogram to generate a product; and
determining a frequency-domain representation of the product to recover a vector of phasors.