Abstract

We present a versatile electro-optical packaging platform for optical transceiver modules suitable for very high aggregate I/O capacity, as required, for example, in (disaggregated) datacenters and servers. Real-estate limitations on the board or on the processor package laminate are overcome by using a flexible printed circuit board substrate that is folded around a solid body, resulting in a 3-D package assembly. A 48 $\text {Gb/s} \times 10$ Gb/s transceiver prototype is demonstrated as well as the design path toward a transceiver with 1.2-Tb/s aggregate I/O bandwidth. Accounting for large-scale manufacturing and deployment, we explicitly address the requirements of the optical, mechanical, thermal, and electrical interfaces as well as of all associated manufacturing processes.

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