作者: Babak Janjan , Davood Fathi , Mehdi Miri , Mohsen Ghaffari-Miab
DOI: 10.1364/AO.56.001717
关键词: Switching time 、 Power dividers and directional couplers 、 Picosecond 、 Optics 、 Broadband 、 Ultra-wideband 、 Physics 、 Bandwidth (signal processing) 、 Figure of merit 、 Mach–Zehnder interferometer
摘要: In this paper, the distinctive dispersion characteristic of hybrid plasmonic waveguides is exploited for designing ultra-wideband directional couplers. It shown that by using optimized geometrical dimensions waveguides, nearly wavelength-independent couplers can be achieved. These broadband are then used to design Mach-Zehnder-interferometer-based switches. Our simulation results show ultra-wide bandwidth ∼260 nm proposed plasmonic-waveguide-based switch. Further investigation Mach-Zehnder switch confirms because strong light confinement in waveguide structure, switching time, power consumption, and overall footprint device significantly improved compared silicon-ridge-waveguide-based For designed coupler, time found less than one picosecond, while VπLπ figure merit, active length ∼61 fJ/bit, 85 V×μm, 30 μm, respectively.