Summary of key elements that must be followed by the FTTH Project

FTTHThere are several key elements that must be followed in the project. The correct implementation of these key elements can greatly reduce the project investment, increase the construction speed, and reserve sufficient space for upgrading or resizing, this effectively extends the space for sustainable network operations and upgrades. The FTTH project must follow the following elements:

1. Optical Splitter location

In a passive optical network, the position of the optical splitter plays a vital role in the implementation of the project. The splitter is a passive device and can work normally without power supply. Therefore, there are not many concerns about the site selection and installation. You only need to pay attention to the pipeline and user distribution. The position of the splitter is generally not placed in the data center. It is usually selected in the light distribution box that is close to the user and is concentrated around the user. If the splitter is installed in the data center for centralized optical splitting, the advantages of PON are not shown at all.

The proper location of the splitter can bring about the following advantages:

1) saving investment in optical cables from data centers to optical fiber allocation boxes

Reasonable Selection of Optical Splitter locations can greatly save investment in optical cables. Taking a 24-core optical fiber cable as an example, if the splitter is installed in the data center, the 24-core optical fiber cable is only used for connection between the data center and the user allocation box, only 24 users can be activated. However, if it is used for the connection between the central data center and the outdoor Optical splitter, the split ratio of 1: 64 can cover 1536 households. In other words, a 1536-core optical cable can be replaced with a 24-core optical cable if reasonably installed.

2) saves data room space and improves management functions.

When the splitter is installed outdoors, space in the rack of the data center can be saved.

2. IDC Site Selection

In a pure FTTH project, a maximum of one data center may be required. Because the construction of the IDC involves power acquisition, management, operation, backup power supply, air conditioning, etc., it will greatly increase the construction cost and operation cost. Generally, the carrier will not set up an FTTH data center in any residential area, unless the nearby data center is too far away from the user. Currently, carriers usually have a maximum of optical distribution boxes or optical cable head boxes installed in residential areas.

3. Centralized optical splitting

Operators usually perform concentrated optical splitting in areas close to users. This protects your investment and allows you to resize the splitter based on your activation. In other words, you can buy less Optical Splitter when there are few users in the early stage. As the number of users is activated, the number of Optical splitter will gradually increase. However, we recommend that you consider sufficient resizing space during the preliminary design.

4. Reduce the types of Optical Cables

To facilitate implementation and management, no more than two types of optical fiber cables are used in a well-designed passive optical network, excluding home leather cable cables ). This optical cable is mainly used from the central data center to the user allocation box. In the project completed by rosenberger, only two types of optical cables can be used at most from the central data center to the floor distribution box. Reducing the category of optical fiber cables helps to increase the length of optical fiber cables to be used, and helps manufacturers provide fast response capability and price competitiveness.

5. Easy resizing

Currently, the splitting ratio of EPON or GPON can be 1: 64. In other words, a PON of the local device can contain 64 users. According to the 10G-EPON and 10G-GPON standards, the optical splitting ratio will reach. However, in the current implementation of the operator, the split ratio is basically not directly achieved at in the project. The splitter is usually used. The split ratio of 1: 64 means that the average bandwidth of each user of EPON can only reach 16 Mb.

If users generally need to increase their bandwidth, they will be overwhelmed. According to the high-definition digital TV standard, to achieve P program transmission over the network, the need for a conservative bandwidth of 22 M. If you set the bandwidth to 20 m or 30 m according to the current full configuration, the existing network cannot meet the requirements, to upgrade the source network equipment to a 10 Gb network, the upgrade must result in waste of existing assets and heavy investment. Therefore, we recommend that you use a optical splitter to effectively extend the service life of the current network and bring a better return on investment.

A good solution must be tailored to specific projects and specific solutions based on the needs of developers and owners. A good solution is a network that is easy to implement, easy to maintain, easy to upgrade and expand, and fully improves the validity period of investment. As a professional FTTX solution provider, rosenberger provides users with professional pre-consulting and post-sales training guidance services, customized services enable customers to focus less on the overall project solution from design to implementation, so as to maximize system value.

The FTTH project must follow the five key elements mentioned above. When implementing the FTTH project, readers should consider these five factors to improve the quality of the project.