We recently had to do a fairly big fibre deployment, connecting a factory back to their main office. During the site survey I discovered a selection of different fibre connectors in use, despite all using the same type of fibre cable.
While we didn’t deploy these, it still prompted the decision that going forward across all of our offices, we would use only one connector type unless there was a very good reason not to.
Which type did I settle on?
In the end I opted for the LC termination (Lucent Connector). Given the unbelievable amount of debate online about the merits of one connector over another, I decided to simply opt for practical benefits rather than negligible (and debatable) performance ones.
In summary, I opted for the LC because it offered the best combination of these factors:
- Its highly compact
- Its been widely adopted making it easily available and compatible with lots of devices
- Its relatively cheap (because of the wide availability)
- It snaps in to place (not screws) so is easier in some fiddly installations
- Due to its compact size, it seems to be the defacto connector for SFP modules in to network switches (allowing you to plug directly in rather than patching if you’re in a pinch)
- The connector casing allows them to be clipped into pairs or pulled apart as needed
What Options Were Considered
For those curious about the different options, I compiled a list of the connectors while I researched:
|Type||Full Name||Insertion Loss||Ferrule Size||IEC Specification||TIA Specification||Field Termination||Coupling Type|
|LC||Lucent Connector||1.25mm||IEC 61754-20||Yes||Snap|
|MU||Miniature Unit||0.2dB||1.25 mm Zirconia||IEC 61754-6||Yes||Snap|
|SC||Subscriber Connector||2.5mm||IEC 61754-4||Yes||Snap|
|ST||Straight Tip||2.5mm||IEC 61754-2||Yes||Bayonet|
|FC||Ferrule Connector||2.5mm||IEC 61754-13||Yes||Screw|