Munich, Germany - Monday 2 September 2002 - At ECOC 2002 in Copenhagen Siemens ICN will present how the development of electro-optic polarization state controllers working on the microsecond time scale, Polarization multiplexing (PolMUX) becomes a viable option for increasing bandwidth capacity in commercial systems.
PolMUX doubles existing fiber capacity by increasing the bandwidth efficiency and has been demonstrated in laboratory experiment. With PolMUX, the two orthogonal polarization states of light may be used as independent communication channels in addition to wavelength division multiplexing (WDM).
Traditionally however, PolMUX was difficult to incorporate in a transmission system, because temporal and spatial variations in the optical fiber’s birefringence demanded some type of high-speed and automatic polarization control at the receiver end. With the development of electro-optic polarization state controllers working on the microsecond time scale, PolMUX becomes a viable option for increasing bandwidth capacity in commercial systems. Such a system with automated polarization control was demonstrated last year in a 1.28 Tb/s field trial based on 80 Gb/s (40 Gb/s x 2 for the
polarization) per wavelength channel. For future integration of PolMUX in optical transmission systems, this technique should also show promise in configurable networks.
ECOC: The presentation will be held on September 11th at 10:00 am in the Auditorium A1.
Siemens Information and Communication Networks (IC Networks) is a leading provider of network technology for enterprises, carriers and service providers. Its comprehensive portfolio comprises IP-based convergence solutions for voice and data (HiPath for enterprises, SURPASS for carriers), a full range of solutions for broadband access, and optical transport networks (TransXpress). The Siemens Group thus provides complete solutions from a single source for the infrastructure of the Next Generation Network - optimized for a prompt return on investment and to open up new business opportunities for customers. In fiscal 2001 (year-end 30 September) IC Networks employed 51,000 people worldwide and posted sales of EUR 12.9 billion.
Further information about ICN is available at: http://www.siemens.com/networks
Ute Ritter, ICN M GC4