8 × 8 Silicon photonics multicast switch with on-chip integrated 2 × 4-ch SOAs

We demonstrate an 8×8 silicon photonics multicast switch with on-chip SOAs. The number of SOA channels was extended by flip-chip bonding of two 4-ch SOAs. The on-chip SOAs exhibited a net gain of ∼9 dB. With careful design and fabrication, lossless transmission will be feasible.