长飞特种光纤销售

根据所用光纤的类型，可以把光纤连接器可分为多模连接器和单模连接器。单模光纤连接器可分为PC，UPC或APC。而多模连接器只有PC或UPC。这里所谓的PC,UPC，APC是指对光纤连接器陶瓷插芯的抛光方式。
从外观看，多模连接器通常带黑色或浅褐色的（beige）尾套（boot）。单模的PC和UPC尾套通常是蓝色或黑色，单模APC则为绿色。
插损是光纤连接器很重要的技术指标，越小越好。而一般APC的插损要小于UPC，UPC的要小于PC。

其它型号的光纤连接器

E2000
E2000 fiber optic connector is one of the newly develped types, which features a spring-loaded shutter used to protect the ferrule from dust and scratches. E2000 fiber connectors is similar size of SC fiber connectors.there are single mode E2000 fiber optic connectors and Multimode E2000 fiber optic connectors. UPC,APC polish types.

SC
SC stands for Subscriber Connector- a general purpose push/pull style connector developed by NTT. SC has an advantage in keyed duplexibility to support send/receive channels.
SC Connectors are frequently used for newer network applications. The SC is a snap-in connector that is widely used in singlemode systems for its performance. The SC connector is also available in a duplex configuration.
They offer low cost, simplicity, and durability. SC connectors provide for accurate alignment via their ceramic ferrules. The square, snap-in connector latches with a simple push-pull motion and is keyed. They feature a 2.5mm ferrule and molded housing for protection. Typical matched SC connectors are rated for 1000 mating cycles and have an insertion loss of 0.25 dB.SC fiber optic connector is with push-pull structure; it is one of the earliest and most commonly used types. With the plastic housing, the SC fiber optic connector is low cost. But it is also with good accuracy; SC fiber optic connector is widely used in mass installations.

FC
Same as SC fiber connector, FC is also invention of NTT Company from Japan. FC is with metal housing, screw structure, as the same products developed by one company, FC fiber optic connector ferrule and sleeves used in FC fiber optic adaptor are both same as SC ones.
这大概是目前应用最广泛的光纤连接器型号。

ST
ST fiber optic connector is also a metal structure, unlike FC fiber optic connector; ST is a push-pull type, not screw type as FC. ST are usually used in 10Base-F while SC usually used in 100Base F, ferrule of ST fiber optic connector is exposed outside, SC fiber optic connector ferrule is designed to be inside of the housing.

LC
LC is the short form for the company name Lucent, LC fiber optic structure is similar like the RJ ones, and it is push and pull. Size of ferrules and sleeves used in LC fiber connector and LC fiber adaptor is half of SC and FC, it is 1.25mm. LC is widely used in single mode fiber network, and it is more and more used in multimode network as well.

MT-RJ
MT-RJ was developed based on NTT’s MT connector, and with the RJ-45 style structure, so it got the name MT-RJ. MTRJ connector is with duplex fiber channel inside one single connector, the space between the two channels is 0.75mm. MT-RJ is widely used for data transmission.

MU
MU is short form of Miniature unit Coupling, it was developed by NTT based on SC fiber optic connector, MU is by now the smallest single ferrule fiber optic connector in the world, so it is good choice for densely installation. NTT has developed a series of MU products. As the fiber optic network bandwidth goes bigger and with wide use of DWDM, demand of MU fiber optic products is also increasing. All above fiber optic connectors are with ceramic ferrules with various sizes, except for MT-RJ ones. MT-RJ is with plastic ferrule.

SMA
SMA是SubMiniature version A的缩写，由Amphenol Fiber Optic Products首先发明制造.
SMA connectors use a threaded plug and socket.  它是最先被标准化的光纤连接器。The SMA was designated as FOCIS-1 by the TIA.
In addition to their compact size, the SMA connector has exceptional mechanical durability. The SMA connector holds a single fiber. SMA connectors have a threaded coupling nut. The ferrule is traditionally made of steel, although ceramic versions are available.
SMA connectors come in two varieties: the SMA-905 has a straight ferrule, whereas the SMA-906 has a stepped ferrule design. The SMA-905 is a non-contact connector typically used in medical, industrial, and military applications. When two SMA 906 are mated together the stepped ferrule design allows an alignment sleeve to be used and therefore the connection has lower insertion loss. The SMA 905 does not have an alignment sleeve therefore the insertion loss of the 905 is higher than that of the 906.

Field Assemblies Fiber Optic Connectors
The new series of field assembling connectors enable fiber optic cable assembly in filed working to be simple, quick and cost effective. there are various types to fit for 0.9mm , 2.0mm and 3.0mm fiber optic cables.Compliant with standard IEC 61745, EIA/TIA 568 and ROHS compliant.

双锥型连接器（Biconic Connector）
这类光纤连接器中最有代表性的产品由美国贝尔实验室开发研制，它由两个经精密模压成形的端头呈截头圆锥形的圆筒插头和一个内部装有双锥形塑料套筒的耦合组件组成。附图如下：

DIN47256型光纤连接器
这是一种由德国开发的连接器。这种连接器采用的插针和耦合套筒的结构尺寸与FC型相同，端面处理采用PC研磨方式。与FC型连接器相比，其结构要复杂一些，内部金属结构中有控制压力的弹簧，可以避免因插接压力过大而损伤端面。另外，这种连接器的机械精度较高，因而介入损耗值较小。
（是否就是简称为D4的光纤连接器呢？待验证，D4的图片见下面）

不锈钢铠装光纤连接器
这并不是一类特殊的光纤连接器，是指可对连接器外护套再处理，即结合了不锈钢护套。These new fiber optic connectors are Sealed and Resistant to temperature, chemicals and corrosive materials. LC,SC,MT-RJ等型号都可以进行不锈钢铠装。