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Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system
An improved algorithm named “twice-FFT” for multi-point intrusion location in distributed Sagnac sensing system is proposed and demonstrated. To find the null-frequencies more accurately and efficiently, a second FFT is ...
Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect
A highly sensitive refractive index (RI) sensor based on two cascaded microfiber knots with vernier effect is proposed and demonstrated by theoretical arithmetic. Deriving from high proportional evanescent field of microfiber ...
Noninvasive respiration movement sensor based on distributed Bragg reflector fiber laser with beat frequency interrogation
A distributed Bragg reflector fiber laser-based respiration movement monitoring system has been proposed and experimentally demonstrated. To fabricate the sensing element for respiration monitoring, a fixture that consists ...