FC connector is popular for single mode applications. motorcycle cables parts has the lowest insertion loss and the best repeatability. It has a thread-on locking mechanism.

MT-RJ stands for Mechanical Transfer Registered Jack. MT-RJ is available in duplex only. It houses two fibers in half the size of a SC connector. MT-RJ connectors come in pair of male and female type. Male MT-RJ connector has two guiding pins and female type has two guiding holes. Male and Female MT-RJ connectors are mated together by plugging the guiding pins into the holes.


SMA connector is a pretty old connector type which is mostly used for multimode applications. Today it is still being using on medical equipment.

There are two types of motorcycle cable components connectors on the market: SMA 905 and SMA 906. The only difference between them is that SMA 906 has a straight ferrule while SMA 905 has a step-down ferrule.

D4 Connector

The NEC D4 was probably the first connector to use ceramic or hybrid ceramic/stainless steel ferrules. It uses a smaller ferrule than SCs or FCs. It was widely used in telco networks in the 80s to early 90s and some may still be in use.

FDDI connector

Besides the SC Duplex, you may occasionally see the FDDI duplex connectors which mate to their specific networks. They are generally used to connect to the equipment from a wall outlet, but the rest of the network will have ST or SC connectors. Since they both use 2.5 mm ferrules, they can be mated to SC or ST connectors with adapters.

Biconic Connector

Biconic connector's yellow body indicating speedometer inner cable - mutlimode versions were usually black. Biconic connector was developed by a team led by Jack Cook at Bell Labs in Murray Hill, NJ.

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