Fiber optic quick connector/cold connector
The fiber optic quick connector/cold connector is a very innovative field-terminated connector, which contains factory-installed optical fiber, pre-polished ceramic ferrule and a mechanical splicing mechanism. The incoming optical fiber or indoor optical fiber can be inserted into the mechanical splicing mechanism without using other tools, and the termination process only takes about 2 minutes, which greatly saves installation time. Fiber optic quick connectors/cold splices currently on the market can terminate single-mode and multimode fibers with diameters of 250 μm, 900 μm, 2.0 mm and 3.0 mm. Optical fiber fast connectors/cold connectors can be directly applied to environments such as corridors and home cables, without redundant protection, and can basically achieve the strength of the original line, reducing the wiring requirements, thus greatly improving the speed of FTTH optical fiber wiring, which is to achieve full An important guarantee for optical networks.
Internal structure of optical fiber quick connector/cold joint
As shown in the figure below, the ferrule and end face inside the fiber optic quick connector/cold splice have been pre-ground and pre-polished before leaving the factory. The mechanical splicing mechanism is located at the end of the ferrule to fix the inserted optical fiber. From the figure below, we can see that the mechanical splicing mechanism is mainly composed of a V-shaped groove and a clamping element; when the fiber needs to be inserted, the V-shaped groove is opened with a wedge-shaped clamp to facilitate the smooth insertion of the fiber. When the fiber is inserted into the V-shaped groove and fixed Finally, just pull out the wedge clip from the V-groove.
The working principle of optical fiber quick connector/cold joint
Optical fiber quick connectors/cold splices can be divided into two categories: pre-installed optical fibers and non-pre-assembled optical fibers. The connection point of the pre-preset fiber optic quick connector/cold joint is inside the connector, and the matching liquid is preset; the connection point of the non-preset fiber optic quick connector/cold joint is on the surface of the connector, and the matching liquid is not preset. Connect directly to the target fiber through the adapter. The working principle of the non-preset optical fiber fast connector/cold connector is very simple, so I won’t go into details here. The principle of the preset optical fiber quick connector/cold joint is described in detail below: the preset optical fiber is glued in the ferrule, and the connection point is set in the V-shaped groove with a light-guiding material-matching liquid with a refractive index similar to the core. In this way, the seamless fit of the preset optical fiber and the target optical fiber can be realized.
Features and applications of optical fiber quick connector/cold connector
Main features: good connection stability, low insertion loss, low cost of use, very fast installation speed and very simple installation and maintenance.
Main applications: optical fiber communication applications, fiber-to-the-home (FTTH) applications, and cable TV applications.
How to use optical fiber quick connector/cold joint
Although the use of fiber optic quick connectors/cold connectors is very simple, correct steps must be followed during installation. In general, the installation process of fiber optic quick connectors/cold connectors is as follows:
Step 1: Prepare fiber optic quick connectors/cold splices, fiber strippers, fiber cleavers, fiber cleaning tools, etc.;
Step 2: Put the connector boot on the optical cable;
Step 3: Strip the outer sheath of the optical cable with an optical fiber stripper, clean the optical fiber, and then cut the bare fiber with an optical fiber cutter. The length of the bare fiber is reserved according to the specific situation;
Step 4: Insert the optical fiber into the optical fiber quick connector/cold joint;
Step 5: Press the gland to lock the fiber;
Step 6: Put the boot on the fiber optic quick connector/cold joint.
Precautions
Fiber optic quick connectors/cold splices are extremely susceptible to contamination and should be kept away from dusty and polluted areas.
The result of fiber cutting has an important impact on the performance of fiber optic quick connectors/cold splices. It is best to use an automatic fiber cleaver to obtain the best cutting effect.
When inserting the optical fiber into the optical fiber quick connector/cold splice, it should be inserted slowly to prevent damage to the optical fiber, resulting in poor transmission performance of the optical fiber.
