Features of Fiber Optic Adapters and Couplers

The fiber optic adapter is the centering connection part of the fiber optic active connector. The fiber optic adapter can precisely butt the two end faces of the optical fiber, so that the light energy output by the emitting fiber can be coupled to the receiving fiber to the maximum, and the same or different optical fiber active connectors can be docked, so that it can be carried out with little loss. The light path is smooth.

With the wide application of fiber optic adapters in fiber optic connections, there are a variety of fiber optic adapters with different interfaces to choose from to meet the installation requirements of different environments. The common types of adapters are: LC adapter, FC adapter, SC adapter, ST adapter, E2000 adapter, MTP/MPO adapter, etc.

Fiber Optic Adapters and Couplers

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 that affect fiber optic adapters:

1. The flame retardant level of the adapter

Flammability UL94 ratings are the most widely used standards for the flammability of plastic materials. It is used to evaluate the ability of a material to extinguish after being ignited. According to the burning speed, burning time, anti-dripping ability and whether the dripping beads burn, there are many evaluation methods. HB, V0, V1, V2 are different flame retardant grades, the grades are different, the flame resistance test methods are also different, and the test judgment standards are also different. The flame retardant grades are from HB, V-2, V-1 to V-0 level increments.

How to choose a good fiber optic adapter?

2. Insertion loss

The insertion loss is generally required to be lower than 0.2dB, and if the insertion loss is too high, it will affect the transmission of light.

3. Repeatability

The adapter needs to be plugged and unplugged frequently during use, so the durability of the adapter is high. The normal standard requires that the number of plugs and unplugs can reach more than 500 times without affecting the performance without changing the insertion loss.

4. Working temperature

-40°C~75°C is a normal working range of the adapter, and the working temperature of this LC adapter of HYC is -40°C~85°C.

5. Fiber optic adapter alignment sleeve material

The alignment sleeve is the most important part of the fiber optic adapter. It is generally made of metal or ceramics. The fiber optic adapter made of ceramics will work relatively well. Because the crystal structure of ceramics is hard and not easy to deform, it can achieve fast alignment and high Precision fiber optic end-to-face splicing.

When choosing a fiber optic adapter, you can use the above important properties to screen out relatively high-quality and stable fiber optic adapters. Of course, you also need to consider other factors that affect quality, such as tensile strength and compliance with standards. Fiber optic adapters are widely used in communication equipment rooms, FTTH fiber to the home, local area networks, fiber optic communication systems, fiber optic connection transmission equipment, national defense and combat readiness, etc. Although the fiber optic adapter product is small, its quality directly affects the entire fiber optic link, and the product quality screening should be rigorous and comprehensive.