Fused Bi conical Tap

FBT( Fused Bi-conical Tap)

It is to scramble two (or more than two) optical fibers with the coating removed in a certain way, melt them under high temperature heating, and stretch them to both sides at the same time, and finally form a special waveguide structure in the form of a bicone in the heating zone. Different light splitting ratios can be obtained by controlling the twisted angle and stretched length of the fiber. Finally, the tapered area is solidified on the quartz substrate with curing glue and inserted into the stainless copper tube, which is the optical splitter. Due to the inconsistency of the thermal expansion coefficient of the cured glue with that of the quartz substrate and the stainless steel tube in this production process, the degree of thermal expansion and contraction is inconsistent when the ambient temperature changes. This situation is likely to cause damage to the optical splitter, especially the optical splitter. The situation in the wild is even worse, which is also the main reason why optical splitters are easily damaged. For the production of more splitters, multiple splitters can be used.

Fused fiber splitter for transmission and distribution signals (Fused Fiber Splitter) Fused fiber splitter technology is to bundle two or more optical fibers together, and then melt and stretch them on the tapered machine, and monitor the change of splitting ratio in real time. After the ratio reaches the requirements, the fusion drawing is ended, and one end of the optical fiber (the rest is cut off) is used as the input end, and the other end is used as the multi-channel output end. The mature tapering process can only draw less than 1×4 at a time. For devices above 1×4, use multiple 1×2 to connect together. Then it is packaged in a splitter box as a whole.

Advantage

1. The taper coupler has more than 20 years of history and experience, and many equipment and processes only need to be used. The development experience. The cost is only a few tenths of that of PLC

2. The raw materials are only easily available quartz substrates, optical fibers, heat shrinkable tubes, stainless steel tubes and less glue, while the machine

The cost of investment and depreciation of instruments is less, and the cost of low-channel splitters such as 1×2 and 1×4 is low.

The splitting ratio can be monitored in real-time as needed, and unequal splitters can be made.