Broadband silicon photonic directional coupler using asymmetric-waveguide based phase control

作者：Lu Zeqin^*; Yun Han; Wang Yun; Chen Zhitian; Zhang Fan; Jaeger Nicolas A F; Chrostowski Lukas

来源：Optics Express, 2015, 23(3): 3795-3806.

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 mu m x 1.3 mu m, or less, and those of the TM mode couplers are 13 mu m x 1.3 mu m, or less.

• 出版日期2015-2-9