LONDON – Networking equipment supplier Infinera Corp. has said it has achieved 100-Gbit/s coherent transmission of data over a 1,348-kilometer (about 838 miles) route on the XO Communications network.
The trial used 500-Gbit/s (500G) photonic integrated circuits (PICs) which each integrate five 100-G channels. The 500-G PICs were used for both transmitting and receiving a 100G signal on a route between Denver and Dallas on the XO (Herndon, Virginia) optical fiber network. The 500G PICs incorporate more than 600 optical elements on a pair of indium phosphide chips, Infinera (Sunnyvale, Calif.) said.
The 100G channel was transmitted using phase modulated quadrature phase-shift key (PM-QPSK) modulation and coherent detection to enable unrepeatered transmission over the long haul distance.
"XO Communications looks forward to the increased capacity and superior efficiency we anticipate these 100G systems will deliver, as we work to meet growing bandwidth demands from our enterprise and wholesale service provider and mobile wireless customers," said Randy Nicklas, CTO of XO Communications, in a statement issued by Infinera.
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