This sentence is key:

The contract includes a nominal amount of Non-Recurring Engineering (NRE) funding to design optical engines based on the POET Optical Interposer for a 400G application, along with a Purchase Order for initial production units.

1. Only "nominal amount" for contract reinforces the easy application of the POET interposer.

2. The NRE work and initial production unit order are all included in one contract, implying high confidence by the purchasing firm.

3. 400G.