• openAccess   Time-expanded φOTDR using low-frequency electronics 

      Soriano-Amat, Miguel; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario; Durán, Vicente Optica Publishing Group (2023-01)
      Time expanded phase-sensitive optical time-domain reflectometry (TE-φOTDR) is a recently reported technique for distributed optical fiber sensing based on the interference of two mutually coherent optical frequency combs. ...