Designing and simulating a nanoscale sensor based on two-dimensional photonic crystal structure with triangular structure for shifting changes up to 20 nm

Authors

Abstract

In this paper, a nano-displacement sensor based on two-dimensional
triangular photonic crystal is presented. The triangular photonic crystal
consists of air-holes surrounded by dielectric material. This sensor includes
two segments which one of them is fixed and the other is movable. The
detected intensity is proportional to the displacement between two segments.
According to the results, the quality factor of cavity is obtained as 4500 and
the sensitivity reaches 2.54 μm-1 in the zero to 20nm displacement
measurement range. The simulation results are obtained by using finitedifference
time-domain method and Rsoft software.

Keywords


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