The GPON OLT transceiver is small form factor pluggable module for serial optical data communications
    such as ITU-T G.984. It is with the SFP 20-pin connector to allow hot plug capability.
    This module is designed for single mode fiber and operates at a nominal wavelength of 1490 nm.
    The transmitter section uses a 1490nm DFB laser and is a class 1 laser compliant according to International
    Safety Standard IEC-60825