Passive optical splitter is an integrated waveguide optical power distribution device, which can divide an input optical signal into multiple input optical signals, and realize multiple end users to share a PON interface. The following editor will tell you about “what is a passive optical splitter and the application of an optical splitter in PON”.

1. What is a passive optical splitter

A passive optical splitter, also called an optical beam splitter, is an integrated waveguide optical power distribution device that can split an input optical signal into two or more output optical signals. An optical splitter is a passive device that has no electronic components and does not require power supply. It is an important part of passive optical networks (such as EPON, GPON, BPON, FTTx, FTTH, etc.). Currently, the splitting ratios of passive optical splitters are generally 1:4, 1:8, 1:16 and 1:32.

In the WDM system, the function of the demultiplexer is to divide the optical signals of different wavelengths into the corresponding wavelength channels; while the optical splitter is to divide the entire optical signal into multiple channels for transmission.

A passive optical splitter splits an input optical signal into multiple output optical signals with a certain splitting ratio. For example, an optical splitter with a splitting ratio of 1:4 can divide an optical signal into four equally, and then transmit it in four different channels. In addition, optical splitters can also be terminated with different types of connectors. The packaging methods are usually box type or stainless steel tube type. Box type optical splitters generally use 2mm or 3mm outer diameter optical cables, while stainless steel tube type Optical splitters generally use optical cables with an outer diameter of 0.9mm.

2. Application of optical splitter in PON

Usually, when we buy optical splitters, we will see 1×2, 1×4 and other 1×N optical splitters. This is because the optical splitter has multiple input terminals and output terminals. Because of this feature, optical splitters are often used in passive optical networks to provide optical media transmission channels to network-side OLTs and user-side ONUs. In the PON structure, the layout of the optical splitter needs to comprehensively consider the structure of the community, the density of users, the distribution of corridors and other factors, in order to achieve the purpose of efficient construction. When the distribution of buildings is scattered and irregular, such as villas, with long distances and low user density, the centralized light splitting method can make full use of resources and cover the surrounding area.

With the continuous development of PON technology, passive optical network systems will become more and more common in the future, and optical splitters, as one of the important components of passive optical network systems, are indispensable.

The above is the detailed content of “What is a passive optical splitter and the application of an optical splitter in PON”, I hope it will be helpful to you. If you have other questions, you can always consult us.