The performance of optical fiber connectors is first of all optical performance. In addition, the interchangeability, repeatability, tensile strength, temperature, and plug-in times of optical fiber connectors must also be considered.
(1) Optical performance: The requirements for optical performance of optical fiber connectors are mainly the two most basic parameters of insertion loss and return loss.
Insertion Loss (Insertion Loss) is the connection loss, which refers to the loss of the effective optical power of the link caused by the introduction of the connector. The smaller the insertion loss, the better, and the general requirement should be no more than 0.5dB.
Return Loss refers to the ability of the connector to suppress the reflection of the optical power of the link, and its typical value should not be less than 25dB. In the actual connector, the pin surface has been specially polished, which can make the return loss greater, generally not less than 45dB.
(2) Interchangeability and repeatability
Optical fiber connectors are universal passive devices. For the same type of optical fiber connectors, they can generally be used in any combination and can be used repeatedly. The additional loss introduced by this is generally within the range of less than 0.2 dB.
(3) Tensile strength
For a finished fiber optic connector, it is generally required that its tensile strength should not be less than 90N.
(4) Temperature
Generally, the optical fiber connector must be able to be used normally at a temperature of -40°C to +70°C.
(5) Mating times
The optical fiber connectors currently in use can generally be plugged and unplugged more than 1,000 times.
