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Harmonic aims for sweet return paths

September 28, 2005 By Jeff Baumgartner, CED

Harmonic Inc. has launched a new digital transmission platform designed to boost the return path bandwidth an operator can provide from subscriber homes.

Based on CWDM (course wavelength division multiplexing) technology, the platform is based on two new products: the NDT 3140 family of transmitters and RDR 4002 receiver. The combined solution uses both time division multiplexing (TDM) and wavelength division multiplexing (WDM) technologies.

Each NDT 3140 accepts two RF inputs in the range of 5-48 MHz or 5-65 MHz, and CWDM wavelengths in the range of 1430 nm to 1610 nm, as well as 1310 nm and 1550 nm output options.

The RDR 4002 return path receivers, meanwhile, can be deployed in hub and headend sites. Each receiver module recovers four RF signals from its two fiber inputs, the company said.

Harmonic said operators require more upstream capacity as consumers embrace bandwidth-eating peer-to-peer applications.

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