Classified by encapsulation types The higher transmission rate an optical module provides, the more complex structure it has. They comply with the specifications defined in the multi-source agreement (MSA) and support synchronous optical. These modules convert electrical signals to optical signals and vice versa, ensuring seamless communication between devices. SFP: small form-factor pluggable. SFP. SFP's full English name is small form-factor Pluggable, translated as small hot-swappable transceiver, it defines the single channel SFP package from 1Gb/s to 28Gb/s should comply with the standard, SFP module by placing CDR and dispersion compensation outside the module. For 10Gbps modules, the encapsulation is usually SFP+, while for.