The primary reason for the optical fiber connector for fiber splice. Now popular in optical fiber communication systems within the optical connector, its variety of different structures.Fiber optic connectors inside a certain extent, also affects the reliability and the performance of the fiber optic transmission system.
Connector Types
Someone realize that the connector types,but I will tell you here. Beacuse I unsure if you unknow. Connector structure may be split into: FC SC, ST, LC, D4, DIN, MU, the MT and so forth in several forms.
The ST Connector remains the most popular multimode connector because it is cheap and easy to install. The SC connector was specified as a standard by the old EIA/TIA 568A specification, but its more expensive and difficulty of installation (up to now) has limited its popularity. However, newer SCs tend to be better in the cost and installation ease, so that it has been growing in use. The duplex FDDI, ESCON and SC connectors are used for patchcords to equipment and is mated to ST or SC connectors at wall outlets. Singlemode networks use FC or SC connectors within the identical proportion as ST and SC in multimode installations.
EIA/TIA 568 B allows any fiber optic connector provided that it has a FOCIS (Fiber Optic Connector Intermateability Standard) document behind it. This opened the way to the usage of several new connectors, which we call the "Small Form Factor" (SFF) connectors, including AT&T LC, the MT-RJ, the Panduit "Opti-Jack," 3M's Volition, the E2000/LX-5 and MU. The LC may be particularly successful in the usa.
Connector Ferrule Shapes & Polishes
Fiber Connectors may have many different ferrule shapes or finishes, usually referred to as polishes. early connectors, simply because they was without keyed ferrules and may rotate in mating adapters, always had a cloak gap between your connectors to stop them rotating and grinding scratches to the ends with the fibers.
Beginning with the ST and FC that have keyed ferrules, the connectors were designed to make contact with tightly, what we should now call physical contact (PC) connectors. Decreasing the air gap reduced losing and back reflection (very important to laser-based singlemode systems ), since light includes a loss of about 5% (~0.25 dB) at each air gap and light is reflected back in the fiber. While air gap connectors usually had losses of 0.5 dB or more and return lack of 20 dB, PC connectors had typical losses of 0.3 dB along with a return lack of 40 to 50 dB.
Soon thereafter, it was determined that making the connector ferrules convex would produce an better still connection. The convex ferrule guaranteed the fiber cores were connected. Losses were under 0.3dB and return loss 40 dB or better. The final solution for singlemode systems extremely sensitive to reflections, like CATV or high bitrate telco links, would have been to angle get rid of the ferrule 8 degrees to create that which you call an APC or angled PC connector. Then any reflected light reaches an angle which is absorbed within the cladding with the fiber.
Connector Termination Styles
1.Epoxy/Polish Connectors
2.Anaerobic Adhesive/Polish Connectors
3.UV Adhesive/Polish Connectors
4.Crimp/Polish Connectors
5.Quick Termination (Pre-Terminated) Connectors
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Source:Knowledge About The Three Aspects Of The Fiber Optic Connector
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