期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 32, 期 10, 页码 589-591出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2020.2985961
关键词
Plasmons; Optical fiber sensors; Sensitivity; Chemical and biological sensors; Silver; Photonic crystal fibers; Fiber optics sensors; microsensors; photonic crystal fibers; surface plasmon resonance; biological and chemical sensors
资金
- Shandong Province Natural Science Foundation, China [ZR2017MA009]
We present a D-shaped photonic crystal fiber (PCF) plasmon sensor based on a large-hole self-reference channel for applications in biological and chemical sensing. Both the Plasmon's fundamental linear-polarization LP01 and high-order LP11 modes are excited at the interface between the analyte and the silver film based on results of the numerical calculation method. We obtained the transmitted spectrum of the guided mode LP01 in the D-shaped PCF. We found that the peak spectral wavelength of the sensor increases when the refractive index of the analyte increases. The spectral sensitivity clearly increases with the silver film's thickness on the sensor's platform, although it is unaffected by other variations of the PCF's geometry. We obtained an optimal spectral sensitivity for the sensor of 3191.43nm/RIU for a silver film thickness of 50nm.
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