The key point: the placement of the optical splitter

May 08, 2021

Friends who have done all-optical networks know that the key to the construction of all-optical networks is the placement of optical splitters. This is especially important in the project, because the entire transmission process is optical fiber, and optical splitting is inevitable.

(PLC splitter) Planar lightwave circuit splitter, a type of optical power management device that is fabricated using silica opticalwaveguide technology. Steel Tube splitter has a more compactstainless tube package which provides stronger fiber protection, and its fiber ends are all terminated with fiber optic connectors. XDK provides whole series of lxN and 2xN splitter products that are tailored for specific applications.

At present, according to the situation of the project, there are three Spectral methods:

1. Large concentration splitting

The optical splitter is installed at a large distribution optical node, such as a campus computer room or a campus optical crossover (FDT). Generally, multiple optical splitters are centrally placed in the ODF or large-capacity FDT, covering more than 200 users.

Spectral characteristics of large concentration:

(1), suitable for low-rise residential FTTH and office building multi-tenant scenarios, requiring more pipeline resources;

(2) Adopt first-level splitting, 1:32 or 1:64 splitter;

(3) The beam splitter is installed on the large-capacity ODF/FDT, and the number of beam splitters is configured according to the number of users;

(4) FAT is set in the corridor to cover 1 or more floors; FAT can be directly melted or connected modules;

(5) The construction cost is the highest, but the operation and maintenance are the most convenient.

2. Small concentration split

The splitter is set at a large distribution optical node, such as a building wiring room or corridor outer wall. Generally, 2 to 5 splitters are used to be placed centrally in a large-capacity FAT or small FDT, covering 100 to 200 users.

Spectral characteristics of small concentration:

(1) Applicable to scenarios such as residential FTTH, office building tenants, shopping malls, etc. The general pipeline resource requirements;

(2) Adopt first-level splitting, 1:32 or 1:64 splitter, covering one or more layers;

(3) The splitter is placed in a large-capacity FAT or small FDT, and the number is configured according to the number of users. The maximum configuration is generally not more than 4;

(4) The construction cost is medium, and the operation and maintenance are more convenient.

3. Distributed splitting

The splitter is installed at the small distribution optical node, such as the weak current room of the high-rise building and the corridor of the low-rise building. Generally, the units or floors of the small-capacity FAT building with 1 to 2 splitters are placed separately to cover the user Below 36 households.

Features of distributed splitting:

(1). It is suitable for user-intensive scenarios such as super high-rise buildings and multi-tenants in office buildings, with minimum requirements on pipeline resources;

(2) The splitter adopts 1:8+1:8 or 1:16+1:4, and the combination ratio does not exceed 1:64; the first-level splitter is mounted on the shelf in the ODF or FDT, and the second-level splitter is used for hanging Wall type FAT installation, the number is generally not more than 4;

(3) FAT is set in the corridor to cover one or more floors; FAT can be directly melted or connected modules;

(4) The construction cost is the lowest, but the operation and maintenance are relatively inconvenient.

4. Comparison of three light splitting methods

Each of the three beam splitting modes has its own characteristics, which is mainly selected according to the user scale and density.

In addition to the park project, the all-optical network is also widely used in commercial complexes:

The weak current system is uniformly carried, simplifying management and operation and maintenance.

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Author:

Mr. Mr. He

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