Power-Efficient, High-Bandwidth Optical ... - Hot Interconnects

Development of 850-nm Optical PCBs Using Standard ComponentsMigration to 850-nm Wavelength• Datacom industry standard wavelength– Multiple suppliers, low-cost, optimized MMF fiber bandwidth• Lower loss in polymer waveguides– 0.03dB/cm at 850nm compared to 0.12dB/cm at 985nm– Loss for a 1m link: 850 nm = 3dB, 985 nm = 12dB• Retain the highly integrated packaging approach: dense Optomodules that “look” like surfacemountelectrical chip carriers• Si carrier platform: high density integration of the electrical and optical componentsConventional ICsOrganic CarrierO-PCBLDDLensArraysOptochipVCSELPDSi CarrierRXPolymer WaveguidesTerabus 850 nm• 24TX + 24 RX Transceiver• 2x12 VCSEL and PD arrays• 2 CMOS ICsOptically enabled MCM (OE-MCM)© 2011 IBM