The Internet industry is growing enormously, and it already accounts for more than 2% of global emissions. Current infrastructures and technologies for access networks cannot answer the growing demand without high energy and environmental costs. With this project, Bifrost aims to deliver a fully developed, tested, and qualified breakthrough Receiver Optical Sub Assembly (ROSA) based on proprietary and patented Quasi Coherent technology, which increases signal detection by more than 10 times. Our technology can be seamlessly integrated into any existing transceiver on the market. Applied to the 5G fronthaul and ring architectures, it will significantly increase the infrastructure's reach from a max. of 10 km up to 20 Km. In fixed networks, it will enable meeting all classes of the new NG-PON2 standard, increasing reach, bandwidth, and number of users. This will have a major impact on Internet networks, reducing the need for costly and high energy-consuming central offices by up to 90%.