MTP Connector
MTP is the Multifiber Connector that is commonly used in prefabrication plants, or for ribbon cables. The polymer ferrule can support 24 fibers in a single ferrule. Multifiber connectors are not currently designed for field fit applications, so these are mainly used for lab termination. In high density data centers they are used extensively, in SM and MM wavelength applications. It features a pull tab locking mechanism, and can only be plugged into the opposing connector. In data centers this is commonly used in break-out cable applications with several single fiber connector types connected to this one multi fiber connector for easy repatching.
LC - UPC - Simplex
The Lucent Connector, named after it's inventor is the most common fiber patch cable connector currently in use. It is designed for compatibility with Small Form-Factor Pluggable Transceivers (SFP) in high density connections. This is a single fiber connector, that is designed for fixing into a Simplex Transceiver and has a locking mechanism at the top of the connector. The Ferrule is Ceramic and has a diameter of 1.25mm. Since the foot print of this connector is about half that of its predecessor (SC), it has become very popular in high density data patch applications.
This is also classified by its "ferrule polish" as an Ultra Physical Contact (UPC) Connector. This is identified by Blue for SM and "Grey" for MM and is regarding the connection point/shape of the ferrule tip. The tip is convex and an extended polishing method before attachment. The ends butt up against one another on a perpendicular plane. The main issue with the design is the tendency for back reflection with poor cleaving and repeat mattings
Ultra Physical Contact Connector (UPC)
The Ultra Physical Contact (UPC) Connector is a connection tip design for the Ferrule of the connector. The tip narrows, utilizing an extended polishing method which creates a finer fiber surface finish than Flat Connectors (not narrowed tip). This effectively provides a more reliable signal for digital TV and systems, where the UPC connector currently dominates the market. The design is said to have diminishing results after repeat mating and unmating of the ferrule tip. This repeat usage will increase the back reflection, lowering the quality of signal.
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