TE SubCom, a TE Connectivity Ltd. company, announced that its engineers have demonstrated record-breaking transpacific transmission using both 200Gb/s and 400Gb/s data channels. The results, presented at the recent post deadline session of the 2013 OFC/NFOEC conference in Anaheim, CA, demonstrated a total capacity on a single fiber pair of 21Tb/s transmitted over more than 10,000km at a spectral efficiency of 6b/s/Hz. This achievement was enabled by careful engineering of the transmitted signals, in order to achieve both long-distance performance and high spectral utilization. “Transpacific length transmission at 6b/s/Hz spectral efficiency is a significant milestone for undersea communications,” said Seymour Shapiro, CTO, TE SubCom.