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A new optical fiber sensor made of tapered and CO2-laser-notched long-period fiber gratings (LPFGs) is proposed for the simultaneous measurement of strain and temperature. Experiments are run to verify the feasibility of using the proposed sensor for the simultaneous measurement of strain and temperature. Experimental results indicate that after the two LPFGs are connected with each other, the sensitivity...
Although the transfer function (TF) method is widely used to detect deformation and displacement of power transformer windings, the sensitivity to minor defects is affected by several factors. This paper presents the influence of temperature on the TF of transformer windings. Nanosecond pulse was used to extending the frequency band of the measurement system. The experiment was carried on a purpose-made...
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