DenseLight releases G.984-compliant GPON-ONU transceiver

October 1, 2004 Singapore -- DenseLight Semiconductors Pte. Ltd. has announced the availability of transceivers for the optical network unit (ONU) side of Gigabit passive optical networks (GPONs). The ONU resides at the customer end of the network.

October 1, 2004 Singapore -- DenseLight Semiconductors Pte. Ltd. has announced the availability of transceivers for the optical network unit (ONU) side of Gigabit passive optical networks (GPONs). The ONU resides at the customer end of the network.

DenseLight claims the device is the world's first commercially available ITU-T G.984-compliant GPON transceiver capable of supporting 2.5 Gbits/sec downstream and 1.25 Gbits/sec (burst mode) upstream transmissions. The ONU transceiver supports fiber to the building/curb/cabinet network configurations. For GPON system makers and service operators, the product offers first-to-market possibilities to bring gigabit-grade broadband services in small to large-scale optical fiber access network deployments around the world.

DenseLight's GPON-ONU transceiver is delivered in a standard 2x9 package and offers complete implementations of the G.984 physical media dependent (PMD) specifications. For instance, the G.984-defined power-leveling function has been implemented to enable reliable burst-mode operation between the ONU and the optical line terminal (OLT) side operating in a Class B optical distribution network (ODN) environment. Furthermore, DenseLight has realized burst on and off transient times of less than 8 nsec through high-speed circuit technology.

DenseLight's GPON transceiver has proven engineering readiness and is already in deployment with "a leading GPON system maker." Designated as the DTG-1031 series, DenseLight's GPON-ONU transceiver is in sampling status for worldwide customers now.

The company's GPON transceiver roadmap anticipates single-fiber output (in Q1 2005), improved transceiver control features with robust firmware, and customer-defined options and interfaces.

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