Twin-core fiber sensor integrated in laser cavity

Abstract 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 used as sensors in a laser cavity incorporating a pulsed semiconductor...

Full description

Saved in:
Bibliographic Details
Published inScientific reports Vol. 12; no. 1; p. 11797
Main Authors Amorebieta, Josu, Pereira, Joao, Durana, Gaizka, Franciscangelis, Carolina, Ortega-Gomez, Angel, Zubia, Joseba, Villatoro, Joel, Margulis, Walter
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group 12.07.2022
Nature Publishing Group UK
Nature Portfolio
Subjects
Efficiency
Fiber optics
Gating
Lasers
Sensors
Online AccessGet full text

Cover

More Information
Summary:Abstract 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 used as sensors in a laser cavity incorporating a pulsed semiconductor optical amplifier (SOA). Each sensor has its unique cavity length and can be addressed individually by electrically matching the periodic gating of the SOA to the sensor’s cavity roundtrip time. The interrogator acts as a laser and provides a narrow spectrum with high signal-to-noise ratio. Furthermore, it allows distinguishing the response of individual sensors even in the case of overlapping spectra. Potentially, the number of interrogated sensors can be increased significantly, which is an appealing feature for multipoint sensing.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-022-16103-8