Abstract
In this paper, we used the finite-difference time domain method to analyze the wavelength spectrum as detected at the end of two-dimensional photonic crystal waveguide that contains circle- and ring-shaped silicon rods distributed in an air wafer. A shift of 0.0758 \(\upmu \)m in the wavelength position of the upper band edge, corresponding to a sensitivity of 758 nm/RIU, was observed. A local defect has been introduced, which produces a very high shift in the cutoff wavelength corresponding to a higher sensitivity of 1490 nm/RIU.
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Bendib, S., Zegadi, A. Improved Sensitivity of the Refractive Index Sensor Based on a Photonic Crystal Waveguide. Arab J Sci Eng 42, 2559–2563 (2017). https://doi.org/10.1007/s13369-017-2439-9
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DOI: https://doi.org/10.1007/s13369-017-2439-9