Open ZR+ QSFP-DD transceivers enhance data centre performance

Small form factor pluggable modules from NeoPhotonic use the Marvell Deneb Coherent DSP (CDSP) to incorporate industry standard open forward error correction (OFEC). The Open ZR+ QSFP-DD transceivers are designed for hyperscale data centre and telecomms networks in metro-regional applications.

They are based on NeoPhotonics’ 400ZR design, optical components and low noise tunable lasers. The company is a contributor to the Open ZR+ Multi-Source Agreement (MSA), which defines interoperability specifications for OpenZR+.

By using OFEC, the rOSNR capability of NeoPhotonics transceivers is improved beyond traditional 400ZR CFEC, allowing for multiple span coverage in amplified networks.  This may be applied to metro and IP-over-DWDM networks with extended-reach scenarios, with data rate coverage from 100 to 400Gbits per second.

There are a number of applications where the fibre reach may not exceed the OIF ZR specifications, explained NeoPhotonics, but because of older fibre, patch panels and other impairments, the link loss and impairment budgets could exceed that of a standard 400ZR link.

The OpenZR+ module can be used for 400G upgrades.  

“NeoPhotonics has developed an OpenZR+ solution to take advantage of the benefits of IP-over-DWDM and because many customers are interested in utilising small form factor coherent modules deeper into their networks,” said Tim Jenks, chairman and CEO of NeoPhotonics.  “Our Open ZR+ QSFP-DD transceivers combine an extended network reach and interoperable OFEC with our proven optical component and transceiver designs to address these needs.

“The ability to transmit 400Gbits per second over distances as long as 800km and more in a cost-effective manner is a real game changer,” concluded Mr. Jenks.

NeoPhotonics develops and manufactures lasers and optoelectronic devices that transmit, receive and switch high-speed digital optical signals for cloud and hyper-scale data centre internet content provider and telecomms networks. The company’s products enable cost-effective, high-speed over distance data transmission and efficient allocation of bandwidth in optical networks.  

NeoPhotonics maintains headquarters in San Jose, California, USA and ISO 9001:2015 -certified engineering and manufacturing facilities in Silicon Valley (USA), Japan and China.

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