Hello everyone!
In this article, I will continue to learn about fiber optical splitters with you.
In the previous article, we have learned the basics and common classifications of fiber optical splitters. Now, let's learn how fiber optical splitters are applied in PON networks and how to select fiber optical splitters.
Application of Fiber Optic Splitter in PON Network
Fiber optical splitter enables signals on optical fibers to be distributed between two or more optical fibers with different separation configurations (1 x N or M x N). optical splitter has been widely used in PON networks. FTTH is a common application scenario.
For more details, see the following figure.
PS: If you want to learn more about FTTH, you can also find out more in this FTTH article I shared previously.
How Do I Select an Appropriate Fiber Optical Splitter?
In general, a good fiber splitter needs to pass a series of rigorous tests. The performance indicators of the optical splitter are as follows:
Insertion loss: refers to the dB loss of each output channel relative to the input optical power. Generally, the lower the insertion loss value, the better the splitter performance.
Return loss: also called reflection loss, refers to the power loss of optical signals returned or reflected due to discontinuities in optical fibers or transmission lines. Generally, the higher the return loss, the better.
Split ratio: refers to the output power of the optical splitter output port in the system application. It is related to the wavelength of the transmitted light.
Isolation: indicates that the optical splitter of an optical path is isolated from the optical signals of other optical paths.
In addition, uniformity, directivity, and PDL polarization loss are key parameters that affect the performance of the beam splitter. But in the specific selection, FBT and PLC are still the two main choices for the vast number of users.
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