Fiber cold splicing and fiber splicing

Optical fiber cold splicing and optical fiber fusion splicing: when light is transmitted in the optical fiber, there will be loss, which is mainly composed of the transmission loss of the optical fiber itself and the splicing loss at the optical fiber joint. Once the optical cable is produced, the transmission loss of the optical fiber itself is basically determined, while the fusion loss at the optical fiber joint is related to the optical fiber itself and on-site construction. Efforts to reduce the splicing loss at the fiber joint can increase the transmission distance of the fiber relay and increase the attenuation margin of the fiber link.

Fiber cold splicing and fiber splicing

1. Cold connection of optical fiber

It is used to connect optical fiber or optical fiber butt pigtail, which is equivalent to making a joint (fiber butt pigtail refers to the butt joint of the fiber core of the optical fiber and the pigtail instead of the pigtail head mentioned in the former), and is used for this kind of cold splicing The thing is called a fiber optic cold splicer.

The optical fiber cold joint is used when two pigtails are docked. The main part inside it is a precise V-shaped groove. After the two pigtails are pulled out, the cold joint is used to realize the docking of the two pigtails. It is easier and faster to operate, saving time than welding with a fusion splicer. There are generally two forms of cold splicing: the first is the on-site quick connector of the end; the second is the cold splicing of the optical fiber butt.

Optical fiber quick connectors and optical fiber cold splices will play an irreplaceable role in FTTH access. The field termination technology of optical fiber quick connectors just solves this problem. It is convenient and fast without fusion splicing, and the connection cost is low, truly realizing access anytime and anywhere .

It is used to connect optical fiber or optical fiber butt pigtail, which is equivalent to making a joint (fiber butt pigtail refers to the butt joint of the fiber core of the optical fiber and the pigtail instead of the pigtail head mentioned in the former), and is used for this kind of cold splicing The thing is called a fiber optic cold splicer. The optical fiber cold joint is used when two pigtails are docked. The main part inside it is a precise V-shaped groove. After the two pigtails are pulled out, the cold joint is used to realize the docking of the two pigtails. It is easier and faster to operate, saving time than welding with a fusion splicer.

2. Optical cable welding

Optical cable fusion is a meticulous work, especially in the aspects of end face preparation, welding, fiber coiling, etc., requiring the operator to observe carefully, consider carefully, and operate in a standardized manner.

When light is transmitted in the optical fiber, it will generate loss, which is mainly composed of the transmission loss of the optical fiber itself and the fusion loss at the optical fiber joint. Once the optical cable is ordered, the transmission loss of the optical fiber itself is basically determined, while the fusion loss at the optical fiber joint is related to the optical fiber itself and on-site construction. Efforts to reduce the splicing loss at the fiber joint can increase the transmission distance of the fiber relay and increase the attenuation margin of the fiber link.

3. The difference between cold splicing and welding

Hot Melt

Need to use a fusion splicer and fiber cutter. To connect two optical fibers, no other auxiliary materials are needed. The advantage is stable quality and small splicing loss (about 0.03 to 0.05). The disadvantage is that the equipment cost is too high and the power storage capacity of the equipment is limited .Field work love limit.

cold splicing

You don't need too much equipment, just a fiber cutter. But each joint needs a quick connector, which is suitable for field work. The disadvantage is that the loss is too large. About 0.1 to 0.2dB per point.