Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 30, Issue 16, Pages 1471-1474Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2018.2856859
Keywords
Surface plasmon resonance; photonic crystal fiber; birefringence analysis method; broad RI detection range
Funding
- National Natural Science Foundation of China [41472126, 51474069]
- Natural Science Foundation of Heilongjiang Province [E2017010, E2016007]
- Hong Kong Research Grants Council (RGC) General Research Funds (GRF) [CityU 11301215, 11205617]
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An asymmetrical birefringence photonic crystal fiber based on a surface plasmon resonance (SPR) sensor designed to detect the low analyte refractive indexes is investigated by a novel birefringence analysis method. The results show that the birefringent analysis method can replace the conventional confinement loss method pertaining to the investigation SPR on the asymmetrical structures. The air holes in the sensor are arranged in a square lattice structure and two active plasmonic gold layers are deposited on the inner surface of the left and right channels to enhance the SPR phenomenon. The birefringence sensor shows a broad refractive index detection range from 1 to 1.43 with the maximum wavelength sensitivity of 6300 nm/RIU.
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