Experimental Realization of High Transmittance THz 90\circ-Bend Waveguide Using EMXT Structure

Li Ming Si*, Yong Liu, Hong Da Lu, Hou Jun Sun, Xin Lv, Weiren Zhu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We present a high efficiency terahertz (THz) 90\circ-bend electromagnetic crystal (EMXT) waveguide using Si-based microelectromechanical systems technology. The 2-D EMXT consists of a periodical array of square-shaped gold rods (13\,\times\,13 cells) deposited on a silicon substrate, and a 200-nm gold layer is further sputter-coated on the gold rod array. The dimension of each rod is 48\,\times\,48\,\times\, 241 \mu{\rm m}3, and the total size of the EMXT is 1756\,\times\,1756\,\times\,787 \mu{\rm m}3. The 90\circ-bend waveguide is fabricated by removing three rows of rods from the EMXT. Through rigorous numerical simulation, it is found that transmittance higher than 90% are found in the whole range from 0.365 to 0.578 THz. The bending performance of the waveguide is further experimentally measured, where transmittance as high as 91.2% is observed at 0.5 THz. The proposed 90\circ-bend EMXT waveguide can be widely used for applications in THz circuit integrations and THz communications.

Original languageEnglish
Article number6428600
Pages (from-to)519-522
Number of pages4
JournalIEEE Photonics Technology Letters
Volume25
Issue number5
DOIs
Publication statusPublished - 2013

Keywords

  • 90-bend waveguide
  • electromagnetic crystals (EMXT)
  • terahertz (THz)

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Si, L. M., Liu, Y., Lu, H. D., Sun, H. J., Lv, X., & Zhu, W. (2013). Experimental Realization of High Transmittance THz 90\circ-Bend Waveguide Using EMXT Structure. IEEE Photonics Technology Letters, 25(5), 519-522. Article 6428600. https://doi.org/10.1109/LPT.2013.2244878