Views:4 Author:Ada Ru Publish Time: 2021-11-30 Origin:Site
Optical fiber is one of the important materials for modern transmission. Its value is to allow our signals to be transmitted thousands of miles away, and to truly connect every human place on the earth, so that communication is not limited to a village, a region, or a place. A city, a country, connects everyone together to form a social whole with 10,000 things interconnected. Optical fiber is an important link for high-speed information. In the future, the demand for optical fiber will be greater, and the traditional bandwidth will be more powerful.
Yesterday, a few friends asked about how to calculate the number of fiber ends of optical fiber. Today, I will tell you how to calculate the number of fiber splice ends. In light current intelligent projects, there are still a lot of fiber optic requirements. After more than 100 meters, they will basically choose to use fiber optics. Optical fibers generally have ends and ends. How to calculate optical fibers is actually very simple. You can count the number of optical cables with optical fiber connection points between equipment and equipment, and calculate the number of ends of optical fibers, which can be solved by multiplying by 2. For the problem of the number of fiber ends, we take 24 cores as an example. The start end of the fiber must be 24 cores, and the end must be 24 cores. So add the two to get 24*2=48 cores. Therefore, according to the related products of the optical fiber To keep up, a complete end-of-fiber box composition requires the following products:
1. Fiber tray. Optical fiber trays generally have 4 cores, 6 cores, 8 cores, 12 cores, 24 cores, 48 cores; 72 cores, and up to 6 cores, 12 cores and 24 cores are used;
2. Coupler. The coupler types are SC, FC, LC, ST, etc., the most used are FC, LC, SC, etc.;
How to calculate the fiber splice point? There are several ways to know the number of multi-splice cores.
1. See how many fibers there are, and multiply the number of fibers by the multiple of the fiber. For example, 12-core fiber, 12*2=24-core, 12-core at the beginning and 12-core at the end;
2. Count the number of optical fiber boxes or ODF boxes, multiply by the multiple of the optical fiber, such as 24-core optical fiber box (ODF), 24*2=48 cores, 24 cores at the beginning and 24 cores at the end;
The above calculation method with no optical fiber and no joint is like this. This calculation is relatively simple. The total can be calculated by multiplying the number of optical fibers and ODF boxes by its multiple.
There is also a connection point in the middle, which is a little troublesome. This kind of fiber usually has a direct fusion fiber phenomenon. For example, the home fiber is fused together with the weak current fiber. Direct fusion in the optical fiber distribution box does not use couplers and pigtails, only splice trays are used to fix optical fiber fusion splices. So how does this splicing method count the number of spliced cores? First, let's look at the composition of fiber to the home, which consists of the following parts.
Weak current box, composed of weak current box, optical fiber tray, optical fiber trays used here are 2 cores or 4 cores, the largest is 8 cores, and some directly do not have optical fiber trays; power strips; routers; switches; wired wire wiring Rack, ONU (or optical cat), etc；Leather fiber, this part is generally from the weak current box to the weak current well, and most of it is a collection of several floors, which is mainly determined according to the floor type;Optical fiber, this part is from the floor fiber distribution box to the ODF cabinet of the communication room, mainly composed of optical cables; optical cables are 6 cores, 12 cores, 24 cores, 48 cores, 72 cores, 96 cores, 144 cores, 288 cores. Compose fiber optic cable;ODF cabinet in the computer room. The most commonly used are 576 and 720 cores;
How to calculate the fiber to the home core? We calculate according to the above components. Starting from the weak current box, the best way is to calculate according to the horizontal, vertical, and computer room parts.
1. The horizontal part. It is from the weak current box to the weak current well. First, you need to know how many fiber cores are pulled. Then you need to know how many weak current boxes are on the floor. For example, there are 20 weak current boxes on the floor, and 20 4-core fiber optic fibers are placed, 20*4=80 core.
2. The vertical part. It is mainly the floor fiber distribution box. How many sheathed fibers go in here is multiplied by the number of cores of the sheathed cable; for example, 20 4-core sheathed fibers enter the fiber distribution box, 20*4=80 cores;
3. Computer room part. It mainly depends on how many cores of the incoming optical cable are collected in the ODF cabinet. For example, an ODF cabinet has 5 144-core optical cables collected in the cabinet, then 144*5=720 cores. Why do you want to calculate this? You need to consider some floors of optical fiber distribution lines. The box is reserved for spare optical fiber.
Through the above algorithm, the sum of the horizontal, vertical and machine room summaries will get the total number of spliced fibers required for the entire project. This basically calculates the number of fibers. Having said so much, in fact, it still depends on the site construction situation and whether the construction is in accordance with the design drawings. If the construction is carried out according to the design drawings, it can be calculated directly in the system diagram of the fiber to the home. Basically, how many fibers are counted and multiplied by his It can be calculated by several times. The straight-drawn optical cable is multiplied by 2 times, and the jump point in the middle is multiplied by 3 times. The optical cable splicing fiber is basical calculated as the splicing point in this way.