According to this CompoundTek statement they have been working with SilTerra since 2014. The question is why would SilTerra expanded their operation to facilitate POET’s optical interposer in 2018.
“We’ve been in partnership with SilTerra since 2014 on various projects and we work extremely well together with excellent high-level management alignment.” Said Raj Kumar, CEO of CompoundTek, a 28-year Semiconductor industry veteran who held senior executive positions in Chartered Semiconductor Manufacturing and GlobalFoundries in the past. “