Ann: H1 FY18 INTERIM RESULT PRESENTATION, page-129

News story up about ASC technology, its currently planned to be 40Tbps, but its possible to get 72-80Tbps with existing technology, and perhaps 160Tbps one day.

Its hard to imagine that much capacity being needed, but no doubt ASC is going to be a significant project for Internet in Australia for a very long time, and things will hopefully look different in 10 years from a consumer point of view (if NBNCo gets fixed)

"At the moment most submarine cables operate with 100 wavelengths per fibre pair. The key to capacity is how much bandwidth you can squeeze out of each wavelength; in general, the more repeaters the greater the throughput possible. ASC does this between Singapore and Jakarta. Typically you can push data through cable at 100 Gbps per wavelength, although the ASC will work with 180 to 200 Gbps wavelength technology as this becomes available. It may be possible to get this up to 400 Gbps in the future. Beyond that further improvement is limited by Shannon’s Law."

https://australiasingaporecable.com/articles/maximising-submarine-cable-performance