Magneto-Optic-Plasmonic Sensors With Improved Performance

In this article, a novel magneto-optic-plasmonic (MOP) surface plasmon resonance (SPR) effect-based sensor configuration using a conventional mutlilayer combination of metal and dielectrics is proposed, and its performance: sensitivity and detection limit of the proposed magneto-optic SPR (MOSPR) sensor (at the magnetic field, H = ±H) with the conventional SPR sensor (at H = 0) at the excitation wavelength, λ = 632.8 and 785 nm in air and helium is compared. Both the sensitivity and detection limit of the optimized MOSPR sensor showed significantly larger values over the sensitivity and detection limit of the SPR sensor, almost 4× the performance of these sensors.