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We report on a fiber sensor by combining an MZI with temperature sensitivity as high as 98.53 pm/°C and can FBG in a high Ge-doped fiber. This sensor shows a be applied in simultaneous measurement of temperature and strain.
Optical fiber Sagnac interferometers (OFSIs) constructed by a 3-dB coupler and a high-birefringence (Hi-Bi) fiber has been developed into various sensors in recent decades. However, the discussion on the length of Hi-Bi fiber in this setup remains limited. In this paper, the sensing length of the Hi-Bi fiber is separated from the total length of the Hi-Bi fiber for the first time in analysis and the...
A Sagnac interferometer based temperature sensor is proposed by using a piece of selectively filled polarization maintaining photonic crystal fiber. The sensitivity dependence on the infiltration length ratio was studied for the first time.
In this paper, we report an optical fiber Sagnac interferometer (OFSI)-based temperature sensor constructed by a selectively filled polarization-maintaining photonic crystal fiber (PM-PCF). The transmission spectrum of the OFSI is in sinusoidal form and is sensitive to temperature. Simulation results predicted a higher sensitivity by selective filling than nonselective filling. In experiments, we...
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