科研之友
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摘要
A novel torsion sensor employing a short length of polarization maintaining photonic crystal fiber was inserted into the fiber loop mirror with an output probe. The sensing scheme was described theoretically by a Jones matrix and experimentally demonstrated. The results showed that the sensitivity of the intensity loss in response to the twist angle may be up to 0.0394dB/degrees and a resolution of 0.025 degrees was achieved. This torsion sensor is attractive due to its compact size, insensitivity to temperature, and suitability for longer distance transmission than conventional sensors.
