Avago offers QSFP+ modules that interoperate with SFP+ devices

Lightwave Staff

Avago Technologies (NASDAQ: AVGO) has unveiled a pair of QSFP+ optical transceiver modules that offer interoperability with fielded SFP+ modules. The new pluggable, parallel optical QSFP+ eSR4 transceiver can address both 40 Gigabit and 10 Gigabit Ethernet applications with a verified link distance of 400 m. Meanwhile, the QSFP+ iSR4 modules enable interoperability to 10G SFP+ links up to 100 m using OM3 multimode fiber (MMF) and 150 m using OM4 MMF.

The new modules are designed to offer data center operators the flexibility to reuse their current 10G infrastructures when upgrading to 40G.

The Avago QSFP+ eSR4 modules integrate four 10G 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 QSFP+ eSR4 modules enable the development of top-of-rack, blade, and modular switches with up to 44 QSFP+ ports per line card. This provides 176 10G-channels with QSFP+ instead of the 48 SFP+ channels available today. QSFP+ eSR4 modules can be used for both high-density 10G and 40G aggregated Ethernet applications, providing more flexibility to connect to different levels of switches, reducing latency, and increasing port density with lower power consumption per lane, Avago says.

The QSFP+ eSR4 extends reach to 300 m with OM3 MMF and 400 m using OM4 MMF. Avago expects to sample the QSFP+ eSR4 modules by this summer. The QSFP+ iSR4 modules are now in production.

“We have worked closely with Avago to test a wide array of Corning Cable Systems’ fiber-optic cables that contained Corning ClearCurve OM3 and OM4 multimode fibers with their parallel optic transceivers, giving designers the flexibility to develop innovative data center applications,” said Doug Coleman, manager, technology and standards at Corning Cable Systems.“Together we verified that the interoperability of the Avago QSFP+ eSR4 modules meets link distance specifications for both 10 and 40 Gigabit Ethernet applications.”

Avago will demonstrate the QSFP+ iSR4 and eSR4 modules, along with its portfolio of high-speed optical fiber products, in Corporate Village booth #1357 at OFC/NFOEC.

For more information on optical transceivers and suppliers, visit the Lightwave Buyers Guide.

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