Connector, a device that achieves the connection function. Everyone is not unfamiliar with connectors, and we can see them everywhere in our lives. In order to ensure that you have a correct and detailed understanding of the connector, this article will introduce the connector based on four major aspects: 1. The performance of the optical fiber connector, 2. The advantages of the optical fiber quick connector, 3. The optical attenuation of the optical fiber quick connector, 4. The correct connection method of the crimp connector.
First, the performance of fiber optic connectors
The performance of the optical fiber connector, first of all, the optical performance, in addition to the interchangeability, repeatability, tensile strength, temperature and insertion and removal times of the optical fiber connector.
(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 (InserTIonLoss) 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 (ReturnLoss, ReflectionLoss) 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 practical application of the connector, the surface of the pin has been specially polished, which can make the return loss larger, generally not less than 45dB.
(2) Interchangeability and repeatability
Optical fiber connectors are general 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 0.2dB.
(3) Tensile strength
For a well-made fiber optic connector, it is generally required that its tensile strength should not be less than 90N.
(4) Temperature
As a general requirement, fiber optic connectors must be able to be used normally at a temperature of -40oC~+70oC.
(5) times of plugging and unplugging
The fiber optic connectors currently used can generally be plugged and unplugged more than 1000 times.
Second, the advantages of fiber optic quick connectors
Today, LC fiber optic quick connectors are very popular in the market. Here are a few advantages of LC fiber optic quick connectors:
1. The use of LC optical fiber quick connectors can reduce the system cost. Because the LC connector is half the size of a traditional SC connector, it can double the fiber density on the shelf and outlet.
2. The polarization characteristics of the LC fiber optic quick connector help maintain the transmit or receive direction and ensure high repeatability.
3.LC fiber optic quick connectors have anti-hook locks, which can improve durability and reduce rearrangement work caused by cross-connection.
4. The LC fiber optic quick connector can save installation time as there is no need to install field installable connectors.
Three. Optical Attenuation of Optical Fiber Quick Connectors
The optical attenuation of the optical fiber quick connector is possible from 0.00dB to more than 10dB.
The loss of fiber optic connector includes insertion loss and return loss. Insertion loss Telecom requirements are not > 0.5dB average insertion loss ≤ 0.25dB. Return loss: UPC ceramic ferrule (pre-named: spherical end face) requires return loss ≥ 40dB; APC ceramic ferrule (pre-name: inclined plane, 8-degree inclined end face) requires return loss ≥ 55dB.
Regarding the issue of fiber optic quick connectors, this article focuses on how to use fiber optic quick connectors and how much the optical loss of fiber optic quick connectors is. Note that too much insertion loss will affect data transmission or even unable to start the optical anchor; too low return loss will cause data loss. Therefore, it is recommended that you use a good optical fiber connector, which has a great impact on the Internet. It is recommended that you do not use straight-through optical fiber connectors, because the return loss of straight-through optical fiber connectors is not guaranteed, and it is generally difficult to reach more than 40dB.
Fourth, the correct connection method of the crimp connector
1. Before using the connector to be crimped to the device, you should preview the product manual first, and see that the size of the connector and the wire should meet the connection requirements of the relevant device.
2. When the connector is automatically crimped, the crimping operation should be smooth, the connection should be accurate to the interface, and the tension of the wire should be suitable.
3. When the connector is crimped, the closed position should be correct and the height should be accurate. The crimping joint should pay attention to whether there is a wire head and whether the air pressure is within the specified range.
4. After the connector is crimped, it is necessary to inspect its exterior to see if there are any bad problems, and make sure that the crimping process is OK.
5. Pay attention to the depth of the connector crimping. Don't think that it is enough to touch it a little, it is wrong. Because the crimping depth of different equipment is different, as those professionals said, if the connector is not strictly paid attention to when crimping, it will lead to unqualified products, and consumers will cause serious losses if they use it. .
