Fiber Optic Connector

Fiber Optic Connector

Being a part of the fiber patch cable, the fiber optic connector is utilized to achieve accurate and precise connections of the fiber ends. Since the fiber cable transmits pulses of light instead of electrical signals, it is important to choose a good fiber optic connector that aligns microscopic glass fibers perfectly in order to allow for communication.

Though the mechanical design varies a lot among different connector types, the most common elements in a fiber connector can be similar. That’s to say, the connector is mainly composed of fiber ferrule, connector sub-assembly body, connector housing, fiber cable and stress relief boot.

LC Fiber Optic Connector

LC refers to Lucent Connector. The LC connector is a small form-factor fiber optic connector. LC type connector is often found on small form-factor portable transceivers. The small size and instant connections that LC fiber optic connectors make it is an excellent choice for high density applications and cross connections. Along with the development of LC compatible transceivers and active networking components, LC fiber optic connector will continue to grow in the FTTH arena.

SC Fiber Optic Connector

SC stands for Subscriber Connector. SC, also called a square connector, was developed by Nippon Telegraph and Telephone in the market, slowly grew in popularity as manufacturing cost went down. Now it is becoming increasingly popular in single-mode fiber optic cable, analog CATV, GPON, GBIC. SC is a snap (push-pull coupling) connector with a 2.5mm ferrule diameter that operates on the standard IEC 61754–4. The connector’s outer square profile together with its snap coupling mechanism that allows greater connector packaging density in instruments and patch panels.

MTP/MPO Fiber Optic Connector

The MPO connector and the MTP connector, both of which are employed to fiber-optic cabling. The two terms are often used interchangeably, but the term MTP is a registered trademark and identifies a specific brand of the MPO-style connector.

The MPO fiber optic connector is a multi-fiber connector, defined by IEC-61754–7. On the other hand, the MTP is a registered trademark of US Conec. The MTP product complies with the MPO standard. Therefore, the MTP fiber optic connector is a MPO fiber optic connector.

If you specify the MTP fiber optic connector, you are specifying a specific brand. If you specify the MPO fiber optic connector, you are specifying an interface type.

Fiber Optic Adatper

Fiber optic adapters, also called couplers, are designed to connect two fiber optic cables together. They come in versions to connect single fibers together (simplex), two fibers together (duplex), or sometimes four fibers together (quad).

Adapters are designed for multimode or single-mode cables. The single-mode adapters offer more precise alignment of the tips of the connectors (ferrules). This can cause misalignment of the small single-mode fibers and loss of signal strength (attenuation).

MPO Fiber Optic Adapter

The MPO fiber optic adapter is to provide MPO patch cord to MPO patch cord fiber connecting. MPO fiber optic adapter are flange type adapters with plastic housing, both single-mode and multimode ones are available. MPO fiber optic adapter are used in high-density backplane and Printed Circuit Board (PCB) applications in data and telecommunications systems. The MPO adapters provide significant space and cost savings.

MPO fiber optic adapter complies with ANSI, Bellcore, TIA/EIA, and IEC standards with the the character of low insertions loss and high return loss, excellent repeatability and changeability.

UPC and APC Polishing

The two acronyms, APC and UPC are relatively common in the fiber optic industry. Even though these two terms are closely related, there are major differences that distinguish the two from one another.

Each of these terms has to do with how a fiber connector endface has been polished. The term APC stands for angled physical contact and UPC stands for ultra physical contact. As the names imply, these two polishing styles are completely different, which can be witnessed through their results.

A UPC polish results in a dome-shaped endface that aids in optimizing the connections between two jacketed fibers. On the other hand, the endface on an APC connector is polished at an eight degree angle, which reduces the amount of light reflected between the two connected fibers.