The solution of fiber connection
As shown above, fiber optic connectors are widely used in FTTH, FTTO, FTTR, 5G, ODF, CO, IDC, etc.
The main function of the optical fiber connector is to quickly connect two optical fibers, so that the optical signal can be continuous to form an optical path. Optical fiber connectors are movable and reusable, and they are also the most indispensable and most used passive components in optical communication systems. Through the optical fiber connector, the two end faces of the optical fiber can be precisely butted together, so that the light energy output by the transmitting fiber can be coupled to the receiving fiber to the maximum extent, and the influence of the system caused by its intervention needs to be minimized. Because the outer diameter of the fiber is only 125um, and the light-passing part is smaller, the single-mode fiber is only about 9um, and the multi-mode fiber is 50um and 62.5um, so the connection between the fibers needs to be precisely aligned.
Mainly divided into the following three types:
- Fiber optic adapter Adapter (also known as flange): also called fiber optic connector (also called Coupler in some countries) There are as many kinds of Connector/patch cords as there are adapters. The optical fiber adapter is to connect the same or different optical fiber active connectors in the optical fiber line. It can make the optical path smooth with little loss. It is to precisely butt the two end faces of the optical fiber, so that the light energy output by the optical fiber can be emitted. It can be coupled to the receiving fiber to the maximum extent and minimize the impact on the system due to its involvement in the optical link.
- Optical fiber quick connector (referred to as quick connect): It is a very innovative field-terminated connector, which contains factory-installed optical fibers, pre-polished ceramic ferrules and a mechanical connection mechanism. When terminating, you only need to insert the incoming optical fiber or indoor optical fiber into the mechanical splicing mechanism, and no other tools are needed. The termination process only takes about 2 minutes, which greatly saves the installation time.
- Optical fiber attenuator: It is an optical device that can reduce the energy of optical signal. It is used to attenuate the input optical power and avoid the distortion of the optical receiver due to the super strong input optical power. As an optical passive device, the optical fiber attenuator is used for debugging the optical power performance in the optical communication system, debugging the calibration and correction of the optical fiber instrument, and attenuating the optical fiber signal. The product is made of attenuated fiber doped with metal ions, which can adjust the optical power to the required level.
Application in FTTH (Fiber to the Home)
From the aspects of construction efficiency, space occupation, optical performance, reliability and comprehensive cost, the fusion end series products have become the preferred solution for fiber to the home!
FTTR applications (Fiber to the room):
The fusion terminal series products conform to the development trend of FTTR “gigabit home”, turning “gigabit home” into “true Gigabit to the room”, and the contracted bandwidth is equal to the Wi-Fi measured bandwidth, providing high-quality seamless roaming Internet experience. Melting end series products have now become the preferred solution for FTTR!
5G fiber optic connection product application
Due to the different connection point settings, fiber optic connectors are divided into embedded and straight-through fiber optic connectors.
The connection point of the embedded optical fiber connector is set inside the connector, and the embedded optical fiber has a preset matching liquid;
The optical fiber quick connect connector is to insert and fix the optical fiber in the pin, and after the surface of the pin is polished, the alignment is realized in the coupling tube. The outer components of the pins are made of metal or non-metal materials. The butt end of the ferrule must be ground, and the other end usually uses a bend limiting member to support the fiber or fiber optic cable to relieve stress. The coupling tube is generally made of two semi-synthetic and fastened cylindrical members made of ceramic or bronze and other materials, and is often equipped with a metal or plastic flange to facilitate the installation and fixation of the connector. In order to align the fibers as precisely as possible, the processing precision of the pins and coupling tubes is very high.
The connection point of the straight-through fiber optic connector is on the surface of the connector, and it is directly connected to the target fiber through the adapter without pre-matching liquid.
There is no pre-embedded optical fiber and matching paste inside the straight-through optical fiber quick connector device. After the optical fiber is installed and clamped, the end face of the optical fiber can be inspected with a magnifying glass, which can avoid the occurrence of excessive optical fiber connection loss. Axial belt positioning mechanism, during the clamping process, the optical fiber will not move forward axially.
Pre-terminated fiber optic cable to make optical jumper
Making a Patch Panel Module Box
Fabrication of optical fiber distribution frame
Optical fiber connectors can be divided into common silicon-based optical fiber single-mode and multi-mode connectors according to different transmission media, and other optical fiber connectors such as plastic as the transmission medium; according to the structure of the connector, it can be divided into: FC , SC, ST, LC, D4, DIN, MU, MT and other forms. Among them, ST connectors are usually used for wiring equipment, such as fiber distribution frames, fiber modules, etc.; while SC and MT connectors are usually used for network equipment. According to the shape of the fiber end face, it is divided into FC, PC (including SPC or UPC) and APC; according to the number of fiber cores, there are single-core and multi-core (such as MT-RJ) points. Optical fiber connectors are widely used and have a wide variety. In the actual application process, we generally distinguish according to the structure of the optical fiber connector.