Fibre-Optic Fabry-Perot Sensor for Vibration and Profile Measurements

1995 ◽  
pp. 838-838
Author(s):  
I. Paulicka ◽  
V. Sochor ◽  
J. Stulpa
Keyword(s):  
Fibre Optic ◽  
Fabry Perot

Coherence multiplexing of remote fibre optic fabry-perot sensing system

1988 ◽  
Vol 65 (5) ◽  
pp. 319-321 ◽  
Author(s):  
F. Farahi ◽  
T.P. Newson ◽  
J.D.C. Jones ◽  
D.A. Jackson
Keyword(s):  
Fibre Optic ◽  
Sensing System ◽  
Fabry Perot ◽  
Coherence Multiplexing

Underwater pressure measurement using fibre optic extrinsic Fabry-Perot interferometric (EFPI) sensors

2014 ◽  
Author(s):  
Dinesh Babu Duraibabu ◽  
Sven Poeggel ◽  
Elfed Lewis ◽  
Thomas Newe
Keyword(s):  
Pressure Measurement ◽  
Fibre Optic ◽  
Fabry Perot

The Spectrum of a Bent Fiber Fabry-Perot Interferometer under Small Variations of the Refractive Index of the Environment

2013 ◽  
Vol 677 ◽  
pp. 363-367
Author(s):  
Yuri N. Kulchin ◽  
Oleg B. Vitrik ◽  
Stanislav O. Gurbatov
Keyword(s):  
Refractive Index ◽  
Optical Fibre ◽  
Ambient Medium ◽  
Fibre Optic ◽  
Core Mode ◽  
Wide Range ◽  
Fabry Perot ◽  
Resonance Coupling ◽  
Refractive Index Sensors

The phase of light propagating through a bent optical fibre is shown to depend on the refractive index of the medium surrounding the fibre cladding when there is resonance coupling between the guided core mode and cladding modes. This shifts the spectral maxima in the bent fibre-optic Fabry–Perot interferometer. The highest phase and spectral sensitivities achieved with this interferometer configuration are 0,71 and 0,077, respectively, and enable changes in the refractive index of the ambient medium down to 5∙10–6 to be detected. This makes the proposed approach potentially attractive for producing highly stable, precision refractive index sensors capable of solving a wide range of liquid refractometry problems.

Embedded micromachined fibre optic Fabry-Perot pressure sensors in aerodynamics applications

2003 ◽  
Author(s):  
M.J. Gander ◽  
W.N. MacPherson ◽  
J.S. Barton ◽  
R.L. Reuben ◽  
J.D.C. Jones ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Fibre Optic ◽  
Fabry Perot

Use of Fiber Interferometer for AFM Cantilever Probe Displacement Control

2005 ◽  
Vol 295-296 ◽  
pp. 77-82 ◽  
Author(s):  
N.C. Shie ◽  
T.L. Chen ◽  
Kai Yuan Cheng
Keyword(s):  
Light Intensity ◽  
Theoretical Equation ◽  
Displacement Sensor ◽  
Phase Array ◽  
Fibre Optic ◽  
Core Diameter ◽  
Atomic Force ◽  
Interference Fringes ◽  
Fabry Perot ◽  
Afm Cantilever

This investigation presents a fibre-optic Fabry-Perot interferometer as a displacement sensor in an atomic force microsope (AFM). A simple model of light wave transmission between two fibres with the same core diameter is proposed to determine the theoretical equation of light intensity of interference fringes from the fibre-optic Fabry-Perot interferometer. By replacing an AFM cantilever with a movable reflective mirror, the variations of relative light intensity of the interference fringes with the spacing between the fibre and the mirror were recorded. The theoretical equation for the light intensity of interference fringes was close to those obtained experimentally. Finally, a fibre-optic Fabry-Perot interferometer was operated in an AFM to image a two-dimensional phase array with a pitch of 4 µm and a depth of 150 nm.

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