Fabry-Perot refractometer based on an end-of-fiber polymer tip.
A micrometric Fabry-Perot refractometer based on an end-of-fiber polymer tip is proposed. The fiber tip, with a length of 36 mum, was fabricated by self-guiding photopolymerization. The two-wave interferometric operation was achieved by combining the light waves generated at the interface between the single-mode fiber and the polymer tip, and at the fiber tip end (Fresnel reflection). The Fabry-Perot interferometer is coherence addressed and heterodyne interrogated, resulting into a liquid refractive index resolution of approximately 7.5x10(-4).
Frazão
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INESC Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal. ofrazao@inescporto.pt
Caldas
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Santos
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JL
Marques
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PV
Turck
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Lougnot
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Soppera
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D055668:Photochemical Processes; D011108:Polymers / Q000737:chemistry; D012031:Refractometry / Q000379:methods*
D011108:Polymers