Laser on Silicon Photonics foundry process by Tower Semi
Tower Semiconductor said it is participating in DARPA’s Lasers for Universal Microscale Optical Systems (LUMOS) program. The new process to combine high-performance III-V laser diodes with Tower’s PH18 production silicon photonics platform. Tower to offer Multi-project wafer runs (MPW) in coordination with the new process after it is ready. The initial versions of the PDK (process development kit) are expected in 2021 and will include laser and amplifier blocks.
Tower says "The benefits of laser integration on silicon include an increase in the density of lasers, a reduction of coupling losses between the laser and the photonics, a reduction in components required and a much-simplified packaging scheme. When combined with Tower’s rich suite of passive and active silicon photonics elements — such as silicon and silicon-nitride wave guides, Mach-Zehnder modulators (MZM), and Ge photodiodes — the co-integration will enable new products unavailable today from a volume semiconductor or photonics foundry."