I often receive questions from many friends who splicing optical fibers, saying that in the project, the optical fiber to the pigtail (jumper), the pigtail to the pigtail, and the pigtail to the pigtail will not be spliced; or the loss will be large, but the figure Like thinning occurs. So, how do we identify loose pigtails? How to splicing loose pigtails? Let's take a look below!
Loose pigtail
Pigtail Concept
Pigtail refers to an optical fiber or optical cable with an optical fiber connector installed at one end and an optical fiber or optical cable at the other end. Dividing an optical jumper into two becomes two optical pigtails. Optical pigtails are usually used for the terminal of the optical path (such as the terminal point to the actual test result box, the splice tray in the wiring equipment, etc.), Or the extraction of optical devices (such as optical splitters, lasers, detectors, etc.). Pigtail length is usually no more than 2 meters.
Same as the optical jumper, when the connecting line is an optical cable (mostly indoor optical cable) and passes the standard test line, it is called an optical fiber pigtail. There is no special product standard for optical pigtails. Most buyers and sellers change to "arbitrary type" in the form of optical patch cords. Like optical patch cords, they also apply the standard of optical fiber active connectors during quality acceptance.
How to identify loose pigtails
After examining this type of pigtail, we found that there are two styles of pigtails on the market now, which we call loose pigtails and tight pigtails.
If the sheath and the coating are loose, it is called a loose pigtail, and if the sheath and the coating are tight, it is called a tight pigtail. Now basically all splitters on the market are loose type; some jumpers are also loose type;
How to splicing loose pigtails
1. When splicing the tight-sleeve pigtail, the pressing plate of the fusion splicer is pressed against the sheath shown in the picture. Because the sheath and the coating layer are fastened, when the pressing plate drives the sheath to move, the optical fiber also follows the movement. Can complete welding;
2. When splicing loose pigtails, please strip the sheath longer so that the pressure plate is pressed on the coating layer instead of the sheath, and the problem will be solved easily;
Note: let the pressure plate press the coating layer, not the bare fiber inside. So be careful when stripping fibers.
The above is the whole content of how to identify loose pigtails and how to splicing loose pigtails. I believe you have a deeper understanding of loose pigtails here, and I hope to give you some help.
