ALLENTOWN, Pa -- Lucent Technologies Inc.'s Microelectronics Group here debuted three low-power ICs for voice, video, and high-speed data signals transferred over passive optical network (PONs) Internet connections.
The chips--comprising a laser driver, receiver and clock-data-recovery ICs--will be incorporated in optical-lineterminals (OLTs) and optical-networking units (ONUs).
"Bandwidth capacity in the core transport network and office local area networks has been expanding to handle Internet-stimulated demand, but by-and-large, the access network remains a bottleneck for broadband digital services," said Dong Liu, strategic marketing manager for Lucent's analog networking and interface products business. "Service providers worldwide are eyeing PONs to break this bottleneck and to provide the needed capacity."
The three Lucent PON ICs collectively handle upstream broadband traffic at 155 Mbits/s. The clock-data-recovery IC implemented in the OLT has a burst-mode "first bit recovery" capability to support the ultra-fast clock recovery specification in the PON full services access network (FSAN) standards, Lucent said.
According to Lucent, the three ICs offer a burst-mode solution that is essential to PON upstream communication, which conventional continuous-mode ICs cannot handle.
"Unlike other circuit design approaches, these chips enable PON systems to recognize the first bit in a packet of data, compared to up to eight bits of data, which leads to more robust, high-performance systems," said Al Dunlop, director of the design principles research department at Lucent's Bell Labs.
The three ICs are currently available in sample quantities now and are slated for volume production in October. Per unit pricing in quantities of 10,000 is $25 for the laser driver, $23 for the receiver, and $28 for the clock-data-recovery IC.