How to Make Fiber Optic Splitter

Fiber Optic Splitters are very common in today’s fiber optic networks, There are 2 different kinds fiber optic splitters categorized by Product Technical. One is FBT fiber optic splitter and the other is PLC fiber splitter. To know their difference and charateristics better, We need walk into the world of How to Make Fiber Optic Splitter.

What is Fiber Optic Splitter

Before telling you how to make fiber optic splitter, you need to know what is fiber optic splitter first. A fiber optic splitter, also known as a beam splitter, is based on a quartz substrate of an integrated waveguide optical power distribution device, similar to a coaxial cable transmission system. The optical network system uses an optical signal coupled to the branch distribution. The fiber optic splitter is one of the most important passive devices in the optical fiber link. It is an optical fiber tandem device with many input and output terminals, especially applicable to a passive optical network (EPON, GPON, BPON, FTTX, FTTH etc.) to connect the MDF and the terminal equipment and to branch the optical signal.

How to Make Fiber Optic Splitter

Technologies used for constructing fiber optic couplers can be complex and difficult to understand. Two major manufacturing techniques

  •  Fused-fiber Optic splitter(FBT)
  • Planar waveguide splitter(PLC)

How to Make FBT Fiber Optic Splitter

Fused-fiber Splitter used the most basic material–optical fiber. Two or more fiber cores are twisted, fused and tapered together in a length. This type of fiber optic coupler is fused biconical taper (FBT) coupler.

FBT is the traditional technology in which two fibers are placed closely together and fused together by applying heat while the assembly is being elongated and tapered. As the technology continues developing, the quality of FBT splitter is very good and they can be applied in a cost-effective way. Now FBT is designed to split power in optical telecommunication and widely used in passive networks, especially where the split configuration is relatively small.


fabrication of a fused biconical taper coupler (star coupler)

How to Make (PLC) Planar waveguides Splitter

Planar waveguides are more like a semiconductor. A planar wafer is used to make a waveguide coupler, and the reflections occur only in y-directions. Planar lightwave circuit (PLC) couplers use this technology. Planar waveguides are more often used to make high port count couplers, such as 1 x 12 PLC splitter, 1 x 24 PLC splitter.

PLC splitter is a better choice for application where large split configurations are required. It uses an optical splitter chip to divide the incoming signal into multiple outputs. PLC splitter composes of three layers: a substrate, a waveguide, and a lid. The waveguide plays a key role in the splittering process which allows for passing specific percentages of light. Therefore, PLC splitters offer very accurate splits and a low loss. What’s more, PLC splitters have several types such as bare PLC splitter, blockless PLC splitters, fanout PLC splitter, mini-plug in type PLC splitter, etc.

PLC Optical Splitter 1x64 Single Mode PLC Fiber Optic Splitter ABS Box Type with SC Connector
PLC Optical Splitter 1×64 Single Mode PLC Fiber Optic Splitter ABS Box Type with SC Connector

With the growth of FTTx worldwide, in order to serve mass subscribers, the demand for large split configurations in these networks has also grown quickly. Because of the performance benefits and overall low cost, PLC splitters are now the better solutions for these types of applications.