The fiber optic adapter is the centering connection part of the fiber optic active connector. The optical fiber adapter can precisely butt the two end faces of the optical fiber, so that the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent, and the docking of the same or different optical fiber movable connectors can be realized with little loss. The light path is clear.
With the wide application of fiber optic adapters in fiber optic connections, there are various fiber optic adapters with different interfaces to choose from to adapt to different environmental installation requirements. Common types of adapters are: LC adapter, FC adapter, SC adapter, ST adapter, E2000 adapter, MTP/MPO adapter, etc.
Faced with so many types of adapters, how to choose a suitable and high-quality adapter is particularly important. In general, the following points should be considered when considering fiber optic adapters.
Several important properties affect fiber optic adapters:
Flammability UL94 rating is the most widely used standard for the flammability performance of plastic materials. It is used to evaluate the ability of a material to extinguish after being ignited. There are many ways to judge according to the burning speed, burning time, anti-drip ability and whether the drip bead burns. HB, V0, V1, V2 are different flame retardant grades. The grades are different, the test methods for flame resistance are also different, and the standards for test determination are also different. The flame retardant grades are from HB, V-2, V-1 to V-0. level increments. There are not many fiber optic adapters on the market that can achieve a UL94-V0 rating.
The insertion loss is generally required to be lower than 0.2dB. If the insertion loss is too high, it will affect the transmission of light.
The fiber optic adapter needs to be plugged and unplugged frequently during use, so the durability of the fiber optic adapter is high. The normal standard requires that the number of times of plugging and unplugging can reach more than 500 times without affecting the performance under the condition that the insertion loss does not change.
-40℃~75℃ is a normal working range of fiber optic adapters.
The alignment sleeve is the most important part of the fiber optic adapter. It is generally made of metal or ceramic material. The use effect of the fiber optic adapter made of ceramics will be relatively good. Because the crystal structure of ceramics is hard and not easily deformed, it can achieve high-precision fiber optic end faces. docking.
When selecting fiber optic adapters, the above important properties can be used to screen out relatively high-quality and stable fiber optic adapters. Of course, some other factors that affect the quality must be considered, such as tensile strength and conforming standards.
Optical fiber adapters are widely used in communication equipment rooms, FTTH fiber-to-the-home, local area networks, optical fiber communication systems, optical fiber connection transmission equipment, national defense combat readiness and other environments. Although the optical fiber adapter product is small, its quality directly affects the entire optical fiber link. The quality screening of the product should be rigorous and comprehensive.