There are two main methods of optical fiber fusion splicing: cold splicing and hot splicing.
Optical fiber cold splice
It is used to connect optical fiber to optical fiber or optical fiber to pigtail, which is equivalent to making a joint. The thing used for this kind of cold splice is called an optical fiber cold splice. Its main internal component is a precise V-shaped groove. After the two pigtails are pulled out, the cold splice is used to connect them. The operation is simpler and faster, and it can save time compared to hot melting.
Fiber hot-melt
Fiber fusion technology mainly uses a fiber fusion splicer to connect optical fibers or optical fibers and pigtails, and fuses the bare fibers in the optical cable and the pigtails of the optical fibers together to form a whole. Generally, community monitoring uses hot-melt to connect optical fibers.
The difference between cold connection and hot melting
Hot melting requires the use of a fusion splicer and a fiber cutter to connect two optical fibers, and no other auxiliary materials are required. The advantages are stable quality and low continuous loss (about 0.03 to 0.05db). The disadvantages are that the equipment cost is too high, the equipment's power storage capacity is limited, and field operations are restricted.
Cold connection does not require a lot of equipment, just a fiber cutter. But each node requires a quick connector. The advantage is that it is easy to operate and suitable for field operations. The disadvantage is that the loss is relatively large, about 0.1 to 0.2db per point. There are few manufacturers that can produce cold splices in China now, and the cost is high. There is no room for choice in business and technical services. Secondly, matching fluid is required in cold splices. Due to the small amount of use and short time, the aging problem requires time to test.
