Power spectrum in the MIM waveguide with single tooth-structure and nano-structure detection |
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Authors: | Jin Li Yundong Zhang Hanyang Li Chengbao Yao Ping Yuan |
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Affiliation: | National Key Laboratory of Tunable Laser Technology, Institute of Opto-Electronics, Harbin Institute of Technology, Harbin 150080, China |
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Abstract: | The paper proposes the metal–insulator–metal (MIM) waveguides with different tooth-shapes (rectangle-tooth and triangle-tooth) and calculates the corresponding power spectrums by discrete Fourier transform. The finite difference time domain (FDTD) simulation results show that the spectrum transformations reveal the significant differences in the two structures with the same tooth-depth, such as amplitudes, amplitudes difference and spacing of the two peaks. The study will be useful in waveform modulation in the communication wavelength. Furthermore, the spectrum may also be used to detect different nanostructures based on the corresponding transformations. |
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Keywords: | Plasmonics Photonics Optics Nanostructures |
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