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      Twin-core fiber sensor integrated in laser cavity 

      Amorebieta Herrero, Josu ORCID; Pereira, Joao; Durana Apaolaza, Gaizka ORCID; Franciscangelis, Carolina; Ortega Gómez, Ángel ORCID; Zubia Zaballa, Joseba Andoni; Villatoro Bernardo, Agustín Joel; Margulis, Walter (Nature, 2022)
      In this work, we report on a twin-core fiber sensor system that provides improved spectral efficiency, allows for multiplexing and gives low level of crosstalk. Pieces of the referred strongly coupled multicore fiber are ...