At #OFC24, Credo and Wistron demonstrated Linear Receive Optics (LRO), using the Credo Dove 850 DSP, with the 51.2Tb/s Wistron DS-6183-64O 64-port 800GbE switch. Easwar Sankar, Optical FAE Director from Credo Semi, explains:
- The introduction of Credo's Linear Receive Optics (LRO) product, a response to industry demand for more efficient DSP solutions. This innovative product addresses the shortcomings recognized in previous LRO attempts by other vendors.
- The unique design of the LRO, which includes a retimer on the transmit sided and a linear receiver. This allows for improved performance of the switch 30s while addressing all the impairments on the transmitter. This design enables customers to tune the transmitter for different kinds of optics.
- The benefits of the LRO, including a significant reduction in power and cost. The LRO is practical, deployable in mass volume, and can be used in a significant percentage of the current DSP-based transceiver market.
In an LRO transceiver, or Active Optical Cable (AOC), only the transmit path from the electrical input to the optical line side output includes a DSP for signal retiming and equalization. This unlocks dramatic power savings without sacrificing interoperability or standards compliance. All three 800G OSFP LRO modules provided by Credo partners for this demonstration seamlessly “plug and play” with the 51.2T Wistron switch.
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