Jiangsu Nosens Optic-Electric Technology Co.,Ltd
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Analysis Of Fiber Optic Connector Application

- Aug 10, 2018 -

Unlike BNC connectors that are commonly used in the A/V industry, fiber optic connectors have evolved as fiber optic technology continues to mature. The influence of the copper wire connector on the signal loss of the AV system is generally not great, but the fiber optic connection is different, and it has a great influence on each interface in the transmission system. Let's take a look at some of the issues that arise in the physical connection of optical fibers. The optical fiber transmission equipment itself can instruct the connection, but in some cases, most or almost all of the optical fiber transmission connection options are performed manually. The amount of signal lost during the signal transmission process of an optical fiber cable is determined by the quality and type of the fiber cable used, and each connection will generate a certain signal loss. Depending on the type of fiber optic connector selected by the user, the total amount of signal loss at the connection can add up to the amount of signal loss that the fiber cable itself produces.

Maintain the normal operation of the system

In the design of optical fiber systems, the system can operate normally and it achieves very good results. In the system design, we need to consider some unexpected problems that may occur in the system, and let the system achieve normal operating results. In the system design, we must consider the worst possible situation of the system, and make corresponding plans, and look forward to better operating results. Fiber optic connector designers must keep this concept in mind. In the design of the system, a safe, stable system connection requires that the end of the fiber be smooth and square. The end-to-end connection must be accurate and accurate to the micrometer, one millionth of a meter. Commonly used multimode fibers have diameters from 50-62.5 microns, while single-mode fibers have diameters of only 8-9 microns. Comparing this diameter size to the diameter of a hair (17-180 microns), it can be seen that any slight mistake can bring catastrophic losses.

Optical fiber connections require very strict device precision, so the connectors must be very clean. Fiber optic connectors and accessories are usually housed in a sleeve. A finger print or external dust can seriously affect the performance of the connector and even cause transmission failure. Therefore, when the connector is not connected, it should be stored in a clean protective sleeve.

When connecting, we should also wedge the optical fiber connector tightly. In all the current fiber connector designs, we use the "ring" to ensure that the connector is accurate when matched. Fiber optic terminals are glued or crimped into the ferrule and become a permanent component. After inserting the built-in fiber, the ferrule end is polished smooth to provide a smooth interface for the connector fiber connection. Ferrules are usually made of relatively hard materials such as ceramics, of course, can also be stainless steel, plastic or tungsten carbide material, SC, ST and FC universal ferrule diameter of 2.5 mm, LC universal ferrule diameter It is 1.25 mm. Because the functional characteristics of the ferrule can be produced in accordance with the precision requirements, it becomes the first important definite characteristic of the fiber optic connector. In many connection rings, the spring-loaded container connection ferrules ensure coaxial alignment between the fiber and the LED or laser source.

With the development of technology and the expansion of applications, fiber optic connectors have also developed rapidly. There are about 12 or even more fiber optic connectors in use on the market. Each one is designed to meet specific needs. Certainly, there are technical limitations. The current trend of the market is toward the development of a moderately-priced, compact connector model that can support the greater transmission density required by new transmission distribution systems. As users expect, the continuous development of the telecommunications industry has also promoted the large-scale application of optical fiber, in large part due to the demand for various types of communications and entertainment services for the rapid growth of optical fiber connections.

Terminal consideration

Traditionally, fiber optic terminals are generally slow and expensive, and require high equipment requirements and technical requirements. When considering the fiber termination in a single-mode cable, these factors should be taken into consideration. In some cases, we can completely choose some cables that have been set up according to various fiber types.

In tailored applications, we can only select specific terminals. However, with the use of a splicing tool, the length of field terminals on a single mode fiber can be reduced, reducing the number of devices required and the use of technology. For multimode fiber cables, the new splicing method uses a simple fiber cutting method to assemble the cables into pre-designed connectors/cables. This method is very simple, but fiber-to-fiber butt joints, joints are usually used a special optical gel, so that the fiber terminal condensation.

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