Fiber-Bragg-Grating Based Single Axial Mode Fabry-Perot Interferometer and Its Strain and Acceleration Sensing Applications

Based on a rigorous mode theory and considering the wavelength dispersion of fiber Bragg grating (FBG), the conditions necessary for FBG-based Fabry-Perot interferometer (BFPI) to operate in single axial mode (SM) were investigated, as an extension of phase-shifted FBG, by analytical formulas and nu...

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Veröffentlicht in:	Journal of lightwave technology 2016-05, Vol.34 (9), p.2241-2250
Hauptverfasser:	Yoshino, Toshihiko, Sano, Yasukazu, Ota, Daisuke, Fujita, Keiichi, Ikui, Takahiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Acceleration Accelerometers Axial modes Cavity resonators Detection Diffraction and gratings Fabry-Perot Fabry-Perot interferometers Fiber Bragg gratings Fiber gratings Fiber optics and optical communications Fiber optics components Fiber optics sensors Mathematical models Optical devices Optical fiber communication Optical fiber sensors Strain Wavelengths
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Beschreibung
Zusammenfassung:	Based on a rigorous mode theory and considering the wavelength dispersion of fiber Bragg grating (FBG), the conditions necessary for FBG-based Fabry-Perot interferometer (BFPI) to operate in single axial mode (SM) were investigated, as an extension of phase-shifted FBG, by analytical formulas and numerical simulation. Following the theoretical results, SM-BFPI of very narrow bandpass was designed and fabricated. Using that, the first of its kind to our knowledge, SM-BFPI-based WDM distributed (four-points) strain sensing was demonstrated which had a point-like ultrahigh spatial resolution of 2.1 mm and very high strain precision of
ISSN:	0733-8724 1558-2213
DOI:	10.1109/JLT.2016.2521440