상세정보
학술지
Thin Layer Terahertz Sensing Using Two-Channel Parallel-Plate Waveguides
- 저자
- 박현상, Jingshu Zha, 이의수, 전태인
- 발행일
- 201406
- 출처
- Optics Express, v.22 no.14, pp.16738-16744
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 협약과제
- 14PE1100, 테라헤르츠 영상?분광 복합 포터블 스캐너 기술 개발 , 박경현
- 초록
- 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 제안 키워드
- 5 GHz, Finite-difference time-domain (fdtd) method, Frequency tuning, Highly sensitive, Measured frequency, Parallel-plate, Resonance frequency, Single slit, dielectric layer, refractive index, terahertz sensing