High data-rate and long-distance wideband transmission in 125 μm diameter SDM fibers
Space-division-multiplexing (SDM) is often proposed to increase both capacity and efficiency in optical fiber communication. Fibers with > 100 spatial channels and >10 Pb/s data-rates have been reported, but concerns over the mechanical reliability, production yield and ease of near-term adoption have led to investigation of more practical fibers. Here, focus on multi-core fibers with the same 125 um cladding diameter as standard single-mode fibers. Such fibers are compatible with standard cabling technology and have no requirement for MIMO demultiplexing of spatial channels, but may require new transmission bands to achieve high data-rates with moderate numbers of spatial channels.
Ben Puttnam is a senior researcher in the Photonic Network System Laboratory at the National Institute of Information and Communications Technology (NICT) in Tokyo, Japan. He received the MPhys degree in Physics from the University of Manchester (UK) in 2000 and the PhD degree from University College London in 2008. In between he worked as a Switch Design Engineer for T-mobile (UK). After short term visits to NICT, supported by JSPS and the Photonics group at Chalmers University, Sweden supported by the Ericsson research foundation he re-joined NICT in March 2010. His research interests are space-division multiplexing fibers and devices for optical transmission, dynamic networking and optical signal processing.