A Method for Determining the Length of FBG Sensors Accurately

In this letter, we propose a method for estimating the length of single-mode fiber Bragg grating type sensors with high accuracy. Our method is based on calculating the maximum oscillation frequency of the side-lobes of the FBG reflection spectrum. We show that this frequency is independent of the s...

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Veröffentlicht in:	IEEE photonics technology letters 2019-01, Vol.31 (2), p.197-200
Hauptverfasser:	Rajabzadeh, Aydin, Heusdens, Richard, Hendriks, Richard C., Groves, Roger M.
Format:	Artikel
Sprache:	eng
Schlagworte:	FBG Fiber Bragg grating Fiber gratings length determination Mathematical models Numerical methods Optical sensors Oscillators Reflection reflection spectrum Refractive index Sensors Stress Stress distribution Structural integrity
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