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What is insertion loss in fiber optic connectors?

Sep 28, 2023

112

Insertion loss of fiber optic connectors refers to the reduction of optical signal power caused by optical loss between the optical components inside the connector and the contact surface when the connector is inserted into the fiber optic connection.

Insertion loss of fiber optic connectors is an important performance indicator, which directly affects the transmission performance and signal quality of the fiber optic system. The size of the insertion loss depends on the connector's manufacturing quality, alignment accuracy, the quality of the contact surface and the use of the process of care and maintenance and other factors.

Typically, insertion loss is expressed in decibels (dB). Lower insertion loss indicates that the connector has less energy loss during signal transmission and higher transmission efficiency. Generally speaking, the insertion loss of a high-quality fiber optic connector should be below 0.3 dB, while the insertion loss of some high-performance connectors can even reach below 0.1 dB.

The size of insertion loss has different requirements for different application scenarios. For example, in long-distance fiber optic communication systems, the accumulation of insertion loss may have a greater impact on the transmission distance and quality of the signal, so it is necessary to choose connectors with lower insertion loss. In short-distance data centers or local area networks, on the other hand, the insertion loss requirement may be relatively low.

In practice, when making fiber optic connections, you need to pay attention to the alignment and cleaning of connectors to reduce insertion loss and ensure good connection quality. In addition, regular inspection and maintenance of connectors to keep their contact surfaces clean and flat can also help reduce insertion loss and maintain stable system performance.