Ultra Wide Refractive Index Detection Range Photonic Crystal Fiber Sensor
Photonic crystal fiber(PCF)based on surface plasmon resonance(SPR)has been widely studied for its advantages of small size and high sensitivity.However,most of the existing sensors have a narrow range of refractive index detection,which limits their applications in industrial fields.In order to solve this problem,we use gold as plasma material,and adjust the thickness of coating gold film and the size of arc opening of coating gold film on the surface of photonic crystal fiber,a D-type photonic crys-tal fiber sensor with ultra-wide refractive index detection range is designed.The sensor can realize ultra-wide sensing in the range of 1.30 to 1.42.The results show that a photonic crystal fiber sensor with ultra-wide refractive index detection range can be obtained by adjusting the thickness of the gold film and the size of the arc-shaped opening,which provides a broader space for industrial applica-tions.
surface plasmon resonancephotonic crystal fiberrefractive index detection range
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