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Definition: Tbps


(TeraBits Per Second) One trillion bits per second. Tbps is a measurement that prior to the 21st century was unthinkable. As 40 and 100 Gbps Ethernet have become the norm for high-speed backbones, terabit-per-second networks are on the horizon.

China's Ultra-Fast Tbps Link
In 2023, China announced it had built a transmission network transmitting 1.2 terabits per second between three locations. Spanning 1,860 miles, this high-speed link is part of China's Future Internet Technology Infrastructure (FITI). See broadband, space/time, Gbps and Mbps.




The Holy Optochip
In 2012, IBM introduced an optical chipset that transfers data at 1 Tbps. Designed for short-range transmission (less than 500 feet) in a multimode fiber array, the CMOS chip has 48 holes (top) that allow access to the 24 photodiode receivers and 24 VCSEL transmitters as seen from the back (bottom). (Images courtesy of IBM.)