Category Archives: Fiber Optic Adapter

Ubiquitous Fiber Optic Assembly: Connectors and Adapters

In optical cabling systems, when there are fiber optic cables, there are connections. Fiber optic connectors and fiber optic adapters are the key parts of hardware to satisfy these complex fiber connections.

Understanding fiber optic connectors and fiber optic adapters.

fiber-optic-connectors-and-adaptersFiber optic connectors enables quicker connection and disconnection than fiber splicing. They are generally used to terminate the end of an optical fiber, e.g. fiber optic patch cables, or pigtails. But the common fiber optic patch cables and fiber optic pigtails in the market are belongs to pre-assembly. Users can also get such cables by assembling fiber optic connectors and fiber cables. Nowadays, about 100 fiber optic connectors have been introduced to the market. And according to the different structures, they can be divided into various types like ST, FC, SC, LC, MT-RJ, MPO/MTP, MU, DIN, E2000, SMA etc. In addition, according to the polishing type of the ferrule, fiber optic connectors can be usually divided into PC, UPC and APC types.

In order to satisfy the connections of connectors, fiber optic adapters are introduced. Named depending on the connectors, fiber optic adapters are with the similar names with connectors, but have two sides. For example, when there is a LC connector and a SC connector, we called the adapter as LC to SC fiber optic adapter. But when there are two same connectors, it can also be called as coupler, e.g. LC to LC coupler.

Fiber optic connectors and fiber optic adapters are ubiquitous in optical cabling systems.

Fiber optic connectors are usually found in the end of cables in different applications. ST, FC, SC, LC connectors are the most widely used types in today’s common cabling system. ST is probably still the most popular connector for multimode networks, widely used in the optical distribution frame (ODF) or 10BASE-F interface. FC connector is simple in structure, convenient operation and also widely used in ODF. SC is usually seen in GBIC module. LC connectors have replaced SC connectors in corporate networking environments due to their smaller size; they are often found on small form-factor pluggable transceivers. Furthermore, MPO/MTP is a multi-core fiber connectors, which is expected as the ideal solution for high-density data center cabling. Meanwhile, different polishing type is for different application. For instance, singlemode fiber optic cables can be with PC, UPC or APC polished connectors, while multimode there is no APC ones.

The applications of fiber optic adapters are depending on fiber optic connectors. Thus, compared to fiber optic connectors, adapters seem more “quiet”. Nonetheless, in order to satisfy the fiber optic connectors, they are also ubiquitous. The typical case is the fiber adapter panel (FAP). FAP is used for patching fiber cable to the enclosures, such as fiber wall cabinets, rack mount fiber cabinets or rack mount fiber shelf. It enables you to make quick and easy fiber patch panel connections as they can snap into the fiber optic enclosures easily. Additionally, fiber optic adapters are also can be found in fiber optic wall plates. This product is applied in FTTH (Fiber to the Home) access, telecommunication, CATV, data communication networks etc., which is designed to bring fiber to the desk and widely used in multi-floor and high building.

When using fiber optic connectors and adapters, quality is the premise. Meanwhile, cleaning and inspection should be considered.

Fiber optic connectors and fiber optic adapters are small, but crucial hardware in optical cabling systems. A high-quality connector and adapter can usually support low insertion loss and high return loss. This is why we suggest to buy high-quality products. In addition, connectors and adapters are also required to maintain. Processes, such as fiber optic cleaning and fiber optic inspection are necessary to keep them work with high performance.

Fiberstore offers a comprehensive line of fiber optic assembly solution.

connectors_adapters_bannerFiberstore supplies high-quality fiber optic connectors and adapters with a low price. Additionally, pre-assembly products, such as fiber patch cables and optical pigtails are also available with a short delivery time. Furthermore, we offer other ancillary products, e.g. FAPs, fiber optic wall plates, etc. For more information, please visit Fiberstore.com or contact us over sales@fs.com.

An Overview of Fiber Optic Adapter

What is Fiber Optic Adapter?

Fiber optic adapter (also called coupler) is designed to connect two same or different styles fiber optic connectors together precisely at the two ends, which ensures the output of light energy of transmitter coupled to optical receiver almost completely.

How to Classify Fiber Optic Adapters?

Fiber optic adapter can be divided into mating sleeves and hybrid adapters according to the diversity of the fiber optic connectors, mating sleeve means this fiber optic adapter is used to connect the same type fiber optic connectors (SC to SC, LC to LC, etc.), while hybrid adapters are the fiber optic adapter used to connect different kinds of fiber optic connectors (ST to SC, LC to SC, etc.). According to different structures of fiber optic adapter connectors, there are FC, SC, ST, LC, DIN, MU, MT, D4, MTGJ, E2000 and so on. According to different end shapes, there are APC, PC, UPC. According to different transmission medium, there are single mode and multimode adapters. And according to the number of fiber core, there are simplex and duplex. In practical application, we usually distinguish fiber optic adapter from different structures of adapter connectors.

Some Types of Fiber Optic Adapter

LC-LC Fiber Optic Adapter

Features:

  • Compact design
  • High precision alignment
  • Low insertion and return loss and back reflection
  • Small size
  • Easy to operate

Applications:

  • Gigabit Ethernet
  • Video
  • CATV
  • Active device/Transceiver interface
  • Telecommunication networks
  • Metro networks
  • Premise installations
  • Multimedia
  • Industrial and military
LC-LC Fiber Optic Adapter
LC/APC to LC/APC Simplex Adapter

FC-FC Fiber Optic Adapter

Features:

  • Metal connector
  • Compact design
  • NTT-FC compatibility
  • High precision alignment
  • Low insertion and return loss and back reflection
  • Corrosion resistant body

Applications:

  • CATV
  • Telecommunication networks
  • Local Area Networks (LANs)
  • Metro networks
  • Data processing networks
  • Industrial, military and medical
FC-FC Fiber Optic Adapter
FC/UPC to FC/UPC Simplex Adapter

SC-SC Fiber Optic Adapter

Features:

  • Square adapter connector
  • Compact design
  • High precision alignment
  • Low insertion and return loss and back reflection
  • PC or APC lapping mode
  • Plugging easily
  • Higher compression strength

Applications:

  • CATV
  • Telecommunication networks
  • Local Area Networks (LANs)
  • Metro networks
  • Data processing networks
  • Industrial, military and medical
SC-SC Fiber Optic Adapter
SC/UPC to SC/UPC Duplex Adapter

ST-ST Fiber Optic Adapter

Features:

  • Compact design
  • High precision alignment
  • Low insertion and return loss and back reflection
  • Choice of metal or plastic housing, phosphor bronze or zirconia split sleeves

Applications:

  • Premise installations
  • Telecommunication networks
  • Metro networks
  • Local Area Networks (LANs)
  • Data processing networks
  • Instrumentation
ST-ST Fiber Optic Adapter
ST/APC to ST/APC Simplex Adapter

About PC, UPC, and APC in Fiber Optic Adapters

Usually we hear about descriptions like” LC/UPC multimode duplex fiber optic patch cord 3 meters”, or “FC/APC single mode fiber optic pigtails”,” ST/PC multimode duplex fiber optic jumper”, what do these words PC, UPC, APC mean? We know that PC, UPC, APC are standards of the fiber optic connectors, they are actually the polish style of fiber optic ferrules. Here is a picture.

APC
The different polish of the fiber optic connector ferrules result in different performance of them, mainly on the back reflection (return loss). Generally, PC type is required at least 40dB return loss or higher, UPC is 50dB or higher, APC is 60dB or higher. As we know, the higher the return loss the better the performance. Insertion loss of them all should be less than at least 0.3dB, the lower the insertion loss the better the performance. Single mode fiber optic cables can be with PC, UPC or APC polished connectors, while multimode there is no APC ones.