TeraPHY: An O-band WDM Electro-optic Platform for Low Power, Terabit/s Optical I/O
2020
We demonstrate an electro-optic platform enabling a direct optical I/O interface in an ASIC package. The $5.5\mathrm{x}8.9\mathrm{mm}^{2}$ chiplet uses the Advanced Interface Bus (AIB), a parallel digital interface, to communicate to a host ASIC and integrates high-speed digital/analog circuits, optical modulators, photodetectors, and waveguides. Transmitters and receivers demonstrate data-rates up to 25Gbps at 4.9pJ/bit (Tx+Rx) and −12 BER error-free operation. We show a 32-channel, 512Gbps aggregate (across 4 Tx ports) wavelength-division multiplexed (WDM) transmit demonstration from a TeraPHY chiplet, running at 16Gbps per wavelength and 8 simultaneous wavelengths per port.
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