CPO testing hits fiber alignment bottleneck

Experts from Teradyne, Advantest, ISE Labs and Keysight discussed the shift from single-site to multi-site testing of CPO optical engines. Fiber alignment is the main bottleneck, and multi-site probe cards plus more robust optical connectors could speed up the industry.

• Fiber alignment is the main bottleneck in optical engine testing
• Multi-site probe cards are needed to scale NPO into high volume
• Test-side connectors must survive tens of thousands of insertions
• Simultaneous electrical and optical contact is an RF probing challenge beyond 200 GHz