Splicing an MM (multimode) fiber optic cable to an SM (single mode) fiber optic cable is not recommended. MM and SM fiber cables have different core diameters and are optimized for different transmission distances. Attempting to splice them together can result in signal loss, reflection, and other performance issues.

It is best to use active components such as media converters or transceivers to convert the signal from MM to SM or vice versa, or to use a hybrid cable that is designed specifically to transition from MM to SM.

Choose an MSA Compatible SFP or Not?

Compatibility is often the most important parameter users care about when buying an MSA SFP module. MSA (multi-source agreement) is an agreement supported by a number of manufacturers who came together to collaborate and standardize the fit-form and try to provide a reliable mean of mixing and matching SFP brands successfully. Third-party companies also have developed their own tools to program SFP modules to be compatible with the OEM. So, the MSA compatibility Gigabit SFP module can be used successfully in most networks.

SFP vs. SFP+

Here is a table of comparison between SFP and SFP+