From the about section:
"POET offers Transmit and Receive Optical Engines for 100GbE CWDM4/LR4, 200GbE FR4 and 400/800GbE FR4, Remote light sources for C-band and O-band 4-channel and 8-channel laser arrays, and solutions for 800G (2X400G)/1.6Tb (4X400G), all designed for QSFP DD and OSFP modules, and a multi-layered 6.4Tbs optical chiplet (18mmx18mm)."