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Journal Article
Thin Layer Terahertz Sensing Using Two-Channel Parallel-Plate Waveguides
- Authors
- Hyeon Sang Bark, Jingshu Zha, Eui Su Lee, Tae-In Jeon
- Issue Date
- 2014-06
- Citation
- Optics Express, v.22, no.14, pp.16738-16744
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- We report on the highly sensitive terahertz measurement of a thin, dielectric layer using two channels formed by inserting a single slit sheet in the parallel-plate waveguides (PPWGs). When a thin layer is applied to coat the upper surface of the channel, the single resonance frequency caused by the two-channel PPWGs is shifted as a result of the layer's properties, including length, thickness, and refractive index. The measured frequency tuning sensitivities (FTS) throughout the 20-mm layer length are 2.41 and -1.95 GHz/mm at the open upper and lower channels, respectively. The experimental results agree with those of theoretical simulations performed using the finite-difference time-domain (FDTD) method. © 2014 Optical Society of America.
- KSP Keywords
- 5 GHz, Finite-difference time-domain (FDTD) method, Frequency tuning, Measured frequency, Parallel-plate, Resonance frequency, Single slit, Thin layers, dielectric layer, highly sensitive, refractive index
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
