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논문 기본 정보

저자정보
(Pukyong National University) (Pukyong National University)
저널정보
한국조명·전기설비학회 조명·전기설비학회논문지 조명·전기설비학회논문지 제34권 제3호
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    초록·키워드

    In this paper, we performed separate measurement of strain and temperature using a fiber transmission grating (FTG) inscribed on polarization-maintaining photonic crystal fiber (PMPCF) by a CO₂ laser and a Faraday rotator reflector (FRR). The FTG fabricated on PMPCF (referred to as a PMPC-FTG), connected in series with the FRR, has two resonance dips with different cladding-mode orders in its reflection spectrum. The wavelengths λ₁ and λ₂ of the two resonance dips (referred to as D₁ and D₂) were 1471 and 1495 nm, respectively, and D₁ and D₂ were utilized as sensor indicators for the separate measurement of strain and temperature. Strain and temperature responses were independently investigated for the two sensor indicators in a strain range of 0∼2548 με and a temperature range of 30∼90℃, respectively. Both D₁ and D₂ showed linear and uncorrelated responses to strain and temperature. Based on the previously obtained strain and temperature sensitivities, any strain and temperature changes applied to the PMPC-FTG can be estimated by measuring the wavelength shifts of D₁ and D₂.

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      UCI(KEPA) : I410-ECN-0101-2020-565-000419354