[13p-P6-1~6] 4 JSAP-OSA Joint Symposia 2016（Poster）

▲ [13p-P6-4] Loss reduction at slab-array interface in Si waveguide AWG using local rib waveguide structure with minimum terrace area

〇Hideaki Okayama^1,2, Yosuke Onawa^1,2, Daisuke Shimura^1,2, Hiroki Yaegashi^1,2, Hironori Sasaki^1,2 (1.OKI, 2.PETRA)

Keywords:silicon, waveguide, AWG

The rib waveguide structure with terrace is often used to reduce the excess loss generated at slab to arrayed waveguide junctions in AWG. In a previous report, we proposed a very simple structure for this purpose using minimum terrace area and obtained theoretical 0.6 dB excess loss. In this presentaiton we report an experimental Si wire arrayed-waveguide 8ch AWG with 100 GHz channel spacing showing 1.2 dB insertion loss using this structure. A loss improvement of 2.8 dB was attained using minimum terrace area.