Distributed dynamic strain measurement with a direct detection scheme by using a three-step-phase-shifted double pulse in a UWFBG array.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.485414
Abstract: We demonstrate a stable homodyne phase demodulation method with a double pulse based on an ultra-weak fiber Bragg grating (UWFBG) array. The technique divides one of the probe pulses into three sections and introduces successive… read more here.
Keywords: direct detection; double pulse; uwfbg array; detection scheme ... See more keywords
The Impact of Rayleigh Scattering in UWFBG Array-Based Φ-OTDR and Its Suppression Method
Sign Up to like & getrecommendations! Published in 2023 at "Sensors"
DOI: 10.3390/s23115063
Abstract: Ultra-weak fiber Bragg grating (UWFBG) array-based phase-sensitive optical time-domain reflectometry (Φ-OTDR) utilizes the interference interaction between the reference light and the reflected light from the broadband gratings for sensing. It significantly improves the performance of… read more here.
Keywords: rayleigh backscattering; uwfbg array; impact rayleigh; array based ... See more keywords