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Dual-wavelength all-fiber erbium-doped laser based on few-mode tilted fiber Bragg grating for torsion sensor

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Abstract

Torsion sensor based on dual-wavelength laser is proposed. By analyzing the laser intensity difference of two wavelengths in 1550.95 nm and 1552.53 nm, the sensitivity of 3.53 dB/(rad/m) from -1.99rad/m to 2.65 rad/m is achieved.

© 2021 The Author(s)

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