상세정보
학술지
Effective Plasmonic Mode-Size Converter
- 발행일
- 201110
- 출처
- Optics Express, v.19 no.22, pp.21605-21613
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 초록
- Plasmonic mode-size converters (PMSCs) for long-range surface plasmon polaritons (LR-SPPs) at the wavelength of 1.55 μm are presented. The PMSC is composed of an insulator-metal-insulator waveguide (IMI-W), a laterally tapered insulator-metal-insulator-metal-insulator waveguide (LT-IMIMI-W), and an IMIMI-W in series. The mode-intensity sizes of the LR-SPPs for the IMI-W and the IMIMI-W were not only calculated using a finite element method but were also experimentally measured. The propagation losses of the IMI-W and the IMIMI-W as well as the coupling losses between them were analyzed by the cut-back method to investigate the effect of LT-IMIMI-Ws. By using the PMSC with a ~27 째 angled LT-IMIMI-W, the coupling loss between a polarization-maintaining fiber and a 3 μm-wide IMIMI-W was reduced by ~3.4 dB. Moreover, the resulting mode-intensity in the output of the PMSC was squeezed to ~35% of the mode-intensity in the input IMI-W. The PMSC may be potentially useful for bridging micro-to nano-plasmonic integrated circuits. © 2011 Optical Society of America.
- KSP 제안 키워드
- Coupling loss, Cut-back method, Finite Element Method(FEM), Integrated circuit, Long-range surface plasmon polaritons, Metal-insulator-metal, Plasmonic mode, Polarization-maintaining fiber, Propagation loss, Surface plasmon(SP), surface plasmon polariton(SPP)