Analysis of optical fiber fusion technology standards

Optical fiber fusion splicing process Optical fiber connection methods can be divided into two types: one is the permanent connection method that cannot be disassembled and assembled once connected, and the other is the connector connection method that can be repeatedly disassembled and assembled. The permanent splicing method can be divided into two types: welding splicing and non-welding splicing. The permanent connection of optical fiber, often called fixed connection, is the most commonly used connection method during the construction and maintenance of optical cable lines. The characteristic of this method is that the optical fiber cannot be disassembled after a one-time connection, and it is mainly used for the permanent connection of the optical fiber in the optical cable line. The fusion splicing method is the most widely used method for optical fiber connection. It adopts the arc fusion method. After aligning the optical fiber axis, the metal electrode arc discharge is used to generate high temperature, and the end face of the optical fiber is heated to melt the connected optical fiber and splice it into a whole. Adjust the fiber position Due to the dust on the construction site, the fiber image may deviate from the normal position on the screen. When the deviation reaches a certain range, the splicer will stop splicing. When this phenomenon occurs, the dust in the V-groove should be cleaned up in time. If the groove cannot be welded after cleaning, manual adjustment is required. Discharge correction function Due to factors such as fiber material, altitude, climate, ambient temperature, environmental humidity, electrode status, etc., the loss of fiber fusion splicing is greatly affected, and these factors are not easy to determine in advance. In order to obtain lower splicing loss, the fusion splicer provides discharge correction Function, it can automatically correct the discharge current. When the above situation has a big change, you should choose to operate this function. Splice loss The optical fiber fusion splicer is a special tool to complete the fixed connection of the optical fiber. The so-called fusion splicing method is the method of fusing the end face of the optical fiber with the heating method of electrode discharge after the core axis of the optical fiber to be spliced is aligned. The fusion splicing process can automatically complete the fiber core, fusion and splicing. Estimation of splice loss and other functions. The optical fiber fusion splicer adopts a special core alignment technology to ensure that each individual fusion splice can obtain the lowest splicing loss. Regardless of the core alignment method, the fusion splicer needs to adjust the position of the left and right optical fibers through a special high-precision displacement control. It is possible to align the mandrels of the left and right optical fibers in space. The success of core alignment directly determines the level of splice loss.