• Photonic Sensors
  • Vol. 7, Issue 3, 278 (2017)
Guodong WANG1、*, Junling SHEN2, Xiaolian LIU1, Lu NI2, and Saili WANG2
Author Affiliations
  • 1School of Physics and Electronic Information Engineering, Henan Polytechnic University, No.2001, Shiji road, Jiaozuo,454003, China
  • 2School of Electrical Engineering and Automation, Henan Polytechnic University, No.2001, Shiji road, Jiaozuo, 454003,China
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    DOI: 10.1007/s13320-017-0433-1 Cite this Article
    Guodong WANG, Junling SHEN, Xiaolian LIU, Lu NI, Saili WANG. Optimization of Top Coupling Grating for Very Long Wavelength QWIP Based on Surface Plasmon[J]. Photonic Sensors, 2017, 7(3): 278 Copy Citation Text show less

    Abstract

    The relative coupling efficiency of two-dimensional (2D) grating based on surface plasmon for very long wavelength quantum well infrared detector is analyzed by using the three-dimensional finite-difference time domain (3D-FDTD) method algorithm. The relative coupling efficiency with respect to the grating parameters, such as grating pitch, duty ratio, and grating thickness, is analyzed. The calculated results show that the relative coupling efficiency would reach the largest value for the 14.5 μm incident infrared light when taking the grating pitch as 4.4 μm, the duty ratio as 0.325, and the grating thickness as 0.07 μm, respectively.
    Guodong WANG, Junling SHEN, Xiaolian LIU, Lu NI, Saili WANG. Optimization of Top Coupling Grating for Very Long Wavelength QWIP Based on Surface Plasmon[J]. Photonic Sensors, 2017, 7(3): 278
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