Photonics Research, Volume. 11, Issue 4, 526(2023)
Metamaterial-based octave-wide terahertz bandpass filters
Fig. 1. (a) General schematic of the bilayer-metamaterial (BLMM) bandpass filter. Two plasmonic metasurfaces are placed adjacent to each other separated by a dielectric coupling layer of thickness
Fig. 2. THz measured (circles) and simulated (solid lines) transmittance spectrum of the BLMM-based broad bandpass filters in (a) linear scale and (b) semi-logarithmic scale. Experiments are performed with a time-domain THz spectroscopy system and are in good agreement with FDTD simulation results. (c) Measured maximum transmission (
Fig. 3. Normalized electric field amplitude distribution of the BLMM structure S5. The arrows indicate surface current distribution within one period of the array. (a) Top view distribution in
Fig. 4. (a) Schematic of the 2BLMM devices fabricated from two BLMM structures bound together with double-sided tape (separated by a length
Fig. 5. Measured THz transmittance spectrum of two batches (lines and circles) of the BLMM-based broad bandpass filters in (a) linear scale and (b) semi-logarithmic scale. There is a good repeatability between the pairs of S2, S3, S4, and S6 devices fabricated in two batches and characterized on two different days.
|
|
Get Citation
Copy Citation Text
Ali Maleki, Avinash Singh, Ahmed Jaber, Wei Cui, Yongbao Xin, Brian T. Sullivan, Robert W. Boyd, Jean-Michel Ménard. Metamaterial-based octave-wide terahertz bandpass filters[J]. Photonics Research, 2023, 11(4): 526
Category: Surface Optics and Plasmonics
Received: Aug. 8, 2022
Accepted: Jan. 31, 2023
Published Online: Mar. 9, 2023
The Author Email: Jean-Michel Ménard (jean-michel.menard@uottawa.ca)