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Fiber Optic Modules

Photonics Spectra
Apr 2012
Broadcom Ltd.
BÖBLINGEN, Germany, March 7, 2012 — Avago Technologies has announced fiber optic modules that enable more efficient switching and greater bandwidth in data centers.

The pluggable, parallel optical QSFP+ eSR4 transceiver can address 40- and 10-Gb Ethernet applications with a link distance of 400 m. This gives data center operators the flexibility to reuse the current 10-G wired infrastructure when upgrading to 40 G. The module integrates four 10-G lanes in each direction to increase bandwidth within a line card by more than three times, while using 50 percent less power than that of a one-lane SFP+ module.

The growth of server virtualization, cloud computing and the trend toward network convergence have increased demand for faster and more efficient data center networks. Today, 10-G switches consist of 48 10-G channels/line card, constrained by the physical size of the SFP+ form factor.

To accommodate the need for more bandwidth, customers can use the new modules to develop top-of-rack, blade and modular switches with up to 44 QSFP+ ports/line card. This provides 176 10-G channels with QSFP+ instead of the 48 SFP+ channels available today. QSFP+ eSR4 modules can be used for high-density 10- and 40-G aggregated Ethernet applications, providing flexibility to connect to different levels of switches, reducing latency and increasing port density with lower power consumption per lane.

Avago also announced production of its QSFP+ iSR4 modules that enable interoperability to 10-G SFP+ links up to 100 m using OM3 multimode fiber and 150 m using OM4. The QSFP+ eSR4 version extends this reach to 300 m with OM3 and 400 m with OM4.

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