State Key Laboratory on Advanced Optical Communication Systems and Networks, Peking University, Beijing, 100871, China.
Opt Lett. 2011 Apr 15;36(8):1500-2. doi: 10.1364/OL.36.001500.
A compact wavelength demultiplexing structure based on arrayed metal-insulator-metal (MIM) slot cavities is proposed and demonstrated numerically. The structure consists of a bus waveguide perpendicularly coupled with a series of slot cavities, each of which captures SPPs at the resonance frequency from the bus waveguide and tunes the transmission wavelength by changing its geometrical parameters. A cavity theory model is used to design the operating wavelengths of the structure. Moreover, single band transmission of each channel and the adjustable transmission bandwidth can be obtained by altering the drop waveguide positions and the coupling distance. The proposed arrayed slot cavity-based structure could be utilized to develop ultracompact optical wavelength demultiplexing device for large-scale photonic integration.
提出并数值演示了一种基于金属-绝缘体-金属（MIM）槽腔阵列的紧凑型波长解复用结构。该结构由垂直耦合的总线波导和一系列槽腔组成，每个槽腔在共振频率下从总线波导捕获 SPP，并通过改变其几何参数来调整传输波长。采用腔理论模型设计结构的工作波长。此外，通过改变插入波导的位置和耦合距离，可以获得每个通道的单频传输和可调谐的传输带宽。所提出的基于阵列槽腔的结构可用于开发用于大规模光子集成的超紧凑光波长解复用器件。
