Alpine produces 400G PAM4 optical engine using Tower’s PH18 silicon photonics process

Alpine Optoelectronics Inc of Fremont, CA, USA (which was founded in 2017 and supplies high-data-rate silicon photonics optical engine chips) has begun production of its 400G PAM4 nCP4 optical engine on the PH18 silicon photonics technology platform of specialty foundry Tower Semiconductor Ltd (which has fabrication plants in Migdal Haemek, Israel, and at its US subsidiaries in Newport Beach, CA and San Antonio, TX, and at TowerJazz Japan Ltd). Alpine’s nCP4 chip converts four lanes of 56Gbaud electrical input into four lanes of optical output for use in 400Gbps DR4 transceivers to support high-speed connectivity in data-center applications..