Lu Zeqin, Yun Han, Wang Yun, Chen Zhitian, Zhang Fan, Jaeger Nicolas A F, Chrostowski Lukas
Opt Express. 2015 Feb 9;23(3):3795-806. doi: 10.1364/OE.23.003795.
We design and demonstrate broadband directional couplers that use asymmetric-waveguide based phase control sections, on the silicon-on-insulator platform. Broadband directional couplers with various power splitting ratios, including 10%/90%, 20%/80%, 30%/70%, 40%/60% and 50%/50%, were realized for both transverse electric (TE) and transverse magnetic (TM) modes. Some of the devices exhitbit bandwidths in excess of 100 nm, and all in excess of 75 nm. The footprints of the TE mode couplers are 32 μm ×1.3 μm, or less, and those of the TM mode couplers are 13 μm ×1.3 μm, or less.
我们在绝缘体上硅平台上设计并展示了使用基于非对称波导的相位控制段的宽带定向耦合器。针对横向电场（TE）和横向磁场（TM）模式，实现了具有各种功率分配比的宽带定向耦合器，包括10%/90%、20%/80%、30%/70%、40%/60%和50%/50%。部分器件的带宽超过100纳米，所有器件的带宽均超过75纳米。TE模式耦合器的尺寸为32μm×1.3μm或更小，TM模式耦合器的尺寸为13μm×1.3μm或更小。
