The Internet has become an indispensable part of the infrastructure for most of the aspects of daily life and has developed to a fundamental infrastructure for Europe. The uninterrupted, reliable and secure access to the Internet is seen as a basic right for all citizens and a significant economical factor. The current infrastructure lacks many of those features which are obviously associated with a trusted, safe and secure communication medium. The number of attacks on Internet-connected systems are growing and the attacks have become more serious and more technically complex than in the past. With the increasing number of sensitive applications, e.g. e-government or e-commerce, in particular the following critical issues and obstacles gain importance: - Security and privacy. - Service quality and reliability. - Instantaneous and protected access. - Scalability. The goal of the SASER research programme is to provide the scientific, technical, and technological concepts and solutions for secure transport networks in the 2020 time frame. A European solution envisaged by SASER is based on the strengths and expertise in security and high-speed optical transport networks to overcome the bottlenecks and vulnerabilities of today’s electronic all-IP based infrastructure. The envisaged European consortium combines leading equipment providers, network operators, universities and research institutions and offers the prerequisites for a successful development, implementation and standardisation of the proposed solutions. Project website :

– Optical packet switching for high-datarate converged networks

– Architectures for multilayer transport networks

– Multimode transmission for high-datarate transmission

– Techniques for transmission and energy-efficient flexible modulation at 400 Gb/s and beyond

A few highlights from this ongoing project:

– Proof-of-concept demonstration of elastic coherent packet reception with up to 16-QAM signaling;

– Realization of a complex I&Q Mach-Zehnder modulator (CMZM) integrated with broad modulating bandwidth and low driving voltages;

– A coherent 16-QAM OFDM transmitter and receiver operating at 50 Gb/s has been built (characterization ongoing).