I saw this on Twitter, but not on here
https://www.photonics.com/Products/Directly_Modulated_Lasers/pr65919
Directly Modulated Lasers
POET TechnologiesRequest Info
TORONTO, Ontario, Jan. 29, 2021 — Directly Modulated Lasers from POET Technologies use a distributed feedback structure for use on optical interposer platforms.
The flip-chip assembly technique enables a true single-chip, fully integrated optical engine to be produced at wafer scale, resulting in a low-cost, small-size 100G CWDM4 system with a form factor of 9 × 6 mm. It including banks of four lasers, four monitor photodiodes, four high speed photodiodes, a multiplexer, demultiplexer, and taps for power monitoring. It supports a self-aligned fiber attach unit.
Applications include data centers and communications.