Journal
APPLIED OPTICS
Volume 56, Issue 24, Pages 6988-6992Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.56.006988
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Funding
- Natural Science Foundation of Liaoning Province, China [2014020020]
- Fundamental Research Funds for the Central Universities [N130404001, N150403003]
- SRF for ROCS, SEM [47-6]
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A type of D-shaped photonic crystal fiber sensor based on surface plasmon resonance (SPR) is proposed for refractive index sensing and analyzed by the finite element method. The SPR effect between surface plasmon polariton modes and fiber core modes of the designed D-shaped photonic crystal fiber is used to measure the refractive index of the analyte. Numerical results show that the sensor can detect a range of refractive index ranging from 1.33 to 1.38. When the thickness of metal film is t = 20 nm, the maximum sensitivity of 10; 493 nm/RIU is obtained with a very high resolution of 9.53 x 10(-6) RIU. The good sensing performance makes the proposed sensor a competitive candidate for environmental, biological, and biochemical sensing applications. (C) 2017 Optical Society of America
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