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Fiber optic refractometers based on Bragg gratings with phase pi- shift

Kazarov V.   (Kazan National Research Technical University n.a. A.N. Tupolev-KAI)

Morozov O.   (Kazan National Research Technical University n.a. A.N. Tupolev-KAI)

This article discusses the development of fiber optic refractometers of paral-lel type based on two Bragg gratings with the pi-phase shift, one of which is etched in the contact zone with the test substance. The possibility of addi-tional control of tensile/compression deformation of the structural elements, in which the test substance is, by third grating, incorporating in the refrac-tometer, and increase of measurement resolution by creating ring gratings with the pi-phase shift and Fano resonance forming in them.

Keywords:fiber optic refractometer of parallel type, Bragg grating with phase pi-shift, measurement of tensile/compression deformation, ring Bragg grating with phase pi-shift, resolution, Fano resonance.
 

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Citation link:
Kazarov V. , Morozov O. Fiber optic refractometers based on Bragg gratings with phase pi- shift // Современная наука: актуальные проблемы теории и практики. Серия: Естественные и Технические Науки. -2016. -№08. -С. 34-41
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