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Modules bring 40Gbit/s to LANs and enterprise networks

JDSU has demonstrated 'quad small form factor pluggable plus' (QSFP+) transceiver modules for 40Gbit/s optical transmissions up to 10km.

The firm is aiming following products at LAN and storage area networks (SAN).

"Increasing use of cloud computing, on-line video, voice over IP and other internet applications are driving large amounts of content through enterprise, LAN and SAN, and telecom networks," said the firm. "Network operators are under pressure to deploy high performance and high density optical products to support 40G and 100G bit rates while continuing to drive down operating expenses."

The firm expects to have the products commercially available by the first quarter of 2012.

JDSU's QSFP+ long reach module generates and modulates four different wavelengths of light at 10G speeds and combines them into a single optical fibre for client-side network transmission.

It is also capable of receiving the four light channels and reconstructing the 40G signal, providing transceiver capability at 40G for distances up to 10km.

For short reach applications under 100m, the firm has developed a different QSFP+ module using vertical cavity surface emitting lasers (VCSELs) to generate four different optical signals, each modulated at 10G and transmitted over ribbon fibre.

"This module is also able to receive this incoming light and reconstruct the 40G data stream to provide a full transceiver solution. It is designed to supports both 40GE and OTU3 protocols," said JDSU.

The modules are hot pluggable and dissipate 3.5W.


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