The bit error rate is only about 3% of the standard. Cadence demonstrates the world's first 128GT/s PCIe 7.0 optical fiber connection solution

According to news from this site on June 18, Cadence Electronics demonstrated the world’s first PCIe 7.0 optical fiber connection solution at the recently held 2024 PCI-SIG Developer Conference (PCI-SIG DevCon 2024) .

Cadence successfully used linear pluggable optical components at this conference to demonstrate optical fiber PCIe 7.0 signal transceiver with a transmission speed of 128GT/s, without the need for DSP/Retimer (note: retimer), center of gravity No more dependence on add-ons.

During the two-day conference, Cadence's demo system maintained an ultra-low performance of about 3*10^-8 The code rate without forward error correction is about 3% of the PCIe specification value 1*10^-6, which provides sufficient margin for forward error correction (FEC). This ensures the quality of the signal.

With the evolution of PCIe protocol versions,

High-speed PCIe signals have increasingly stringent requirements on transmission media. Existing copper PCIe cables will face problems such as low signal quality, high latency, shorter coverage and greater heat generation in the future.

The fiber-based PCIe connection can solve the above shortcomings of copper signal links and meet the various requirements of data center systems for high-speed PCIe interconnection. Therefore, PCI-SIG established the PCIe Optical Connectivity Working Group last year to develop related technologies.

In addition, Cadence also brought a series of high-speed interconnection application demonstrations such as the more traditional electrical PCIe 7.0 solution at PCI-SIG DevCon 2024.

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