Multi-parameter sensor based on random fiber lasers

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DOIResolve DOI: http://doi.org/10.1063/1.4962964
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TypeArticle
Journal titleAIP Advances
ISSN2158-3226
Volume6
Issue9
Pages095009-1095009-8
AbstractWe demonstrate a concept of utilizing random fiber lasers to achieve multi-parameter sensing. The proposed random fiber ring laser consists of an erbium-doped fiber as the gain medium and a random fiber grating as the feedback. The random feedback is effectively realized by a large number of reflections from around 50000 femtosecond laser induced refractive index modulation regions over a 10cm standard single mode fiber. Numerous polarization-dependent spectral filters are formed and superimposed to provide multiple lasing lines with high signal-to-noise ratio up to 40dB, which gives an access for a high-fidelity multi-parameter sensing scheme. The number of sensing parameters can be controlled by the number of the lasing lines via input polarizations and wavelength shifts of each peak can be explored for the simultaneous multi-parameter sensing with one sensing probe. In addition, the random grating induced coupling between core and cladding modes can be potentially used for liquid medical sample sensing in medical diagnostics, biology and remote sensing in hostile environments.
Publication date
PublisherAIP
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number23000850
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Record identifier78136446-69a9-4fba-87a4-7d054cbba16d
Record created2016-10-19
Record modified2016-10-19
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