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A photonic crystal fiber pressure sensor using mechanical induced tilted long period grating is reported. Transmission dip has a blue shift when the tilted angle of the long period grating increases. The performances of the pressure sensor are evaluated by the shifting of the transmission spectrum after applying different pressure level. The experimental results show that the larger the tilted angle...
Temperature effect of liquid crystal in photonic bandgap fiber (PBGF) based Sagnac loop was investigated. It shows that the longer length of the liquid crystal in the PBGF, the spectrum shifts more when the same degree of temperature changes. A total red-shifting of 6.44 nm was observed for liquid crystal length of 66 mm when the ambient temperature was increased of 22 , whereas...
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