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Twin-core fiber sensor integrated in laser cavity
Univ Basque Country, UPV EHU, Dept Commun Engn, Bilbao 48013, Spain..
RISE Res Inst Sweden, Fiber Opt, S-16440 Stockholm, Sweden..
Univ Basque Country, UPV EHU, Dept Commun Engn, Bilbao 48013, Spain..
RISE Res Inst Sweden, Fiber Opt, S-16440 Stockholm, Sweden..
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2022 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 11797Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Springer Nature , 2022. Vol. 12, no 1, article id 11797
National Category
Computer Systems
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URN: urn:nbn:se:kth:diva-315917DOI: 10.1038/s41598-022-16103-8ISI: 000824910400010PubMedID: 35821399Scopus ID: 2-s2.0-85133894021OAI: oai:DiVA.org:kth-315917DiVA, id: diva2:1684751
Note

QC 20220728

Available from: 2022-07-28 Created: 2022-07-28 Last updated: 2022-09-15Bibliographically approved

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Margulis, Walter

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