NASA’s deep space optical communication uses our TDM1600 time-taggers. 

The main advantages in this case are:
– 64 inputs
– high throughput of 1600 Mcps
– time-tags are sorted by time
– low latency streaming to FPGA card (< 1 us)
– parallel streaming and storage to disk

The project is completed not and works better than expected:

https://www.jpl.nasa.gov/news/nasas-deep-space-communications-demo-exceeds-project-expectations/