상세정보
학술지
Coupled-cavity-based Slow Light Metamaterials with Antireflection Structures
- 발행일
- 201611
- 출처
- Applied Physics Letters, v.109 no.22, pp.1-4
- ISSN
- 0003-6951
- 출판사
- American Institute of Physics (AIP)
- 협약과제
- 16MK1100, 100기가급 초소형 광모듈 상용화 기술개발, 이종진
- 초록
- A slow light metamaterial based on a coupled Fabry-P챕rot cavity is proposed and numerically studied using finite-difference time-domain simulations. The coupled cavity-based slow light metamaterial is composed of a periodic array of partial mirrors with low transmittance, i.e., thin metal films perforated with a subwavelength hole array. The tight-binding model is employed to investigate the transmission properties of the coupled-cavity-based metamaterial. It is shown that the group velocities of the slowly propagating modes can be controlled by adjusting the radius of holes in the mirrors. We also show that undesirable reflections at the boundaries of the finite-size metamaterial can be minimized by introducing optimized antireflection structures.
- KSP 제안 키워드
- Finite Difference Time Domain(FDTD), Hole array, Low transmittance, Periodic array, Thin metal films, Tight-binding(DFTB), Tight-binding model, coupled-cavity, finite-difference time-domain simulations, slow light, transmission properties