In this paper, numerical simulation and analysis of the sensitivity of Strength-based Optical Fiber Sensors (SOFS) have
been reported .The results simulated show that suitable operating point can improve sensitivity of the sensing system
greatly even up to 3.6%. This conclusion can provide theoretical support for optimizing actual strength-based optical
fiber sensors with higher sensitivity.
We present a theoretical analysis and a comparison to experimental results on self-mixing interference. From the theoretical analysis and experiment, the error of the velocity measurement, which is caused by a speckle pattern, has been investigated and optimization of the laser diode velocity system by selecting suitable experiment parameters and proper signal processing methods has been reported. The actual measurement error is <3.1% over a wide velocity range (5.2-479 mm/s).
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