The optical module is a functional component or module, and it must be used together with switches and devices; while the optical fibre Media converter is functional equipment that can be used alone.
SFP is the abbreviation of a small form-factor pluggable.
An SFP module is actually a compact size transceiver that is used to replace the GBIC module more and more in different applications.
There are four common types of fibre optic connectors, they are SC, LC, FC, and ST connectors. Each connector can also be classified at PC, UPC and APC connector according to different polishing types.
A hybrid adapter also knows as Converting fibre adapter, is needed when connecting two different types of fibre connectors. Such as LC female to FC male fibre adapter, ST Female to LC Male Hybrid Adapter etc.