This part of IEC 62148 covers the photonic chip scale package. The purpose of this document is to specify adequately the physical requirements of optical transmitters and receivers that will enable mechanical interchangeability of transmitters and receivers.
IEC 62148-19:2019 history
2019IEC 62148-19:2019 Fibre optic active components and devices - Package and interface standards - Part 19: Photonic chip scale package