Kyocera's on-board optics module offers 16x32Gbps

Kyocera has developed an On-Board Optics Module that achieves an overall bandwidth of 512 Gbps (16 channels of 32 Gbps/channel). 

Kyocera’s prototype module is miniaturized for installation on a printed circuit board near the processor. The company says its module achieves unprecedented improvements in signal-to-noise ratio, virtually eliminating the signal loss caused by conventional electrical conductors. 

Kyocera’s module  uses a Low-Temperature Co-fired Ceramic (LTCC) mounting substrate developed by Kyocera, which offers exceptional material characteristics, such as fine wiring, low dielectric constant, multilayering, and thermal conductivity.

https://global.kyocera.com/newsroom/news/2022/000650.html