We propose an original two-mode (TE0/TE1) division multiplexer using a taper-etched directional coupler. The multiplexer has a low insertion loss of -0.1 dB within C-band with a minimum loss of -0.05 dB, a modal crosstalk below -40 dB and a robust fabrication tolerance (>100 nm).

directional coupler, mode multiplexing, silicon waveguide
11th International Conference on Group IV Photonics, GFP 2014
Department of Electronics

Xiong, Y. (Yule), Xu, D.-X. (Dan-Xia), Schmid, J.H. (Jens H.), Cheben, P. (Pavel), Janz, S. (Siegfried), & Ye, W.N. (2014). Broadband two-mode multiplexer with taper-etched directional coupler on SOI platform. In IEEE International Conference on Group IV Photonics GFP (pp. 39–40). doi:10.1109/Group4.2014.6962017