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In this paper, fiber Bragg grating (FBG) array incorporating three FBGs in SMG-28 fiber with distinct centre wavelengths at 1545.01 nm, 1550.03 nm and 1555.03 nm has been investigated for multipoint sensing of monotonic temperature fields. The response and sensitivity of the commercially available FBG array is compared with OptiGrating 4.2.1 simulations. The findings can be used for optimizing the...
A reflective intensity modulated fiber optic displacement sensor with self-referencing method is studied and the effect of varying source power on the sensor response is investigated in this paper. The advantages and practical limitations of the rather simple referencing technique are experimented and reported. Calibration aspects of the sensor for different target materials are discussed. Also the...
A displacement sensor based entirely on commercially available multimode optical fiber components has been presented in this paper. Intensity modulation is employed for the experimental data wherein physical dimensions of mechanical components can be measured upto an accuracy of 1 µm. The test setup has been successfully tested for the micron accuracies and due to the non-contact nature of measurements,...
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