Find out these 5 elements, the use of fiber jumpers is easier

Fiber jumpers

Fiber patch cords are very common network connection products in both the civil and industrial fields. This article will mainly focus on the use of fiber patch cords for enterprise users. Starting from the definition, use steps, and operating specifications, we will introduce fiber patch cords. Related knowledge points.

1. Basic concepts

Optical fiber jumper (also known as optical fiber connector) means that both ends of the optical cable are equipped with connector plugs to realize the active connection of the optical path; one end with a plug is called an optical fiber pigtail. Optical fiber jumpers are used to make jumpers from equipment to optical fiber cabling links. There is a thicker protective layer, which is generally used for the connection between the optical transceiver and the terminal box.
2. Steps to use fiber jumper
The first step: Identify the optical communication and the computer room, and find the optical splitter;
Step 2: Identify the spectroscope number;
Step 3: Find the splitter port configured on the work order;
Step 4: Find the port of the fiber core and sequence of the optical cable that can reach the user;
Step 5: Jump from the splitter port to the user optical cable port.
3. Basic knowledge and specifications of fiber jumper
1. The fiber jumper operation must meet the principles of ODF rack, optical fiber, integrated box neat, beautiful wiring, easy operation, and less space;
2. The jumper fiber length must be within the range of more than 500mm;
3. The jumper fiber with insufficient length shall not be used, and it is not allowed to use the flange to connect the two jumper fibers;
4. Each fiber jumper should ensure that the radius of curvature is greater than 400mm.

4. the general requirements of fiber walking

1. For the fiber that is routed upward, it should be offline on the outside of the ODF rack, choose the fiber column with the most suitable amount of remaining fiber, and run the fiber upwards on the inside of the ODF rack, run horizontally on the lower edge of the ODM, and go up to the corresponding terminal vertically. ；
2. A fiber jumper is only allowed to go up in the ODF frame once (along the outer side of the ODF frame) and once up (along the inner side of the ODF frame). It is strictly forbidden to wind or cross between multiple fiber-reel columns. Suspended, that is, no fiber entangled on the upper edge of each coiled fiber column;
3. The specific conditions of the site should be lashed after adjusting the fiber jumper at the beginning of adaptation;
4. All fiber jumpers must be placed in the ODF frame, and it is strictly prohibited to lay out the fiber jumper outside the frame, and fly lines.
5. The extra-long fiber jumper used in emergency should be hung on the inner fiber tray in accordance with the rules and shall not affect the future fiber jumper.

5. carry out the necessary light path test

After each section of optical path fiber jumper is completed, it needs to be tested. The test steps are as follows:
1. Use an optical power meter to test the 1490 wavelength at the exit of the splitter, and the optical power should be less than -22dB;
2. The user end uses the optical power meter 1490 wavelength to test, the received optical power should be less than -23dB, and the maximum sensitivity of ONU is generally -24dB;
3. Use ONU equipment for online debugging for users;
4. If the light cannot be received, the visible light source (red light) can be used to judge whether the fiber is wrong;
5. If there is no wrong fiber but there is still no light, when the live loss is large, the ONU cannot work normally and needs to be maintained as soon as possible.