Fiber Loss Standard

What are the fiber loss standards? In reality, the loss of the fiber should be reduced as much as possible. Optical fiber loss The so-called loss refers to the attenuation per unit length of optical fiber, and the unit is dB/km. The level of optical fiber loss directly affects the transmission distance or the distance between relay stations. Therefore, understanding and reducing the loss of optical fiber has great practical significance for optical fiber communication.

fiber loss

Optical fiber materials contain transition metals such as iron, copper, chromium, etc., which have their own absorption peaks and bands and vary with their valence states. The fiber loss caused by the absorption of transition metal ions depends on their concentration. In addition, the presence of OH- also produces absorption loss. The basic absorption peak of OH- is around 2.7 μm, and the absorption band is in the range of 0.5-1.0 μm. For pure silica fiber, the loss effect caused by impurities can be ignored.

Solution: (1) Chemical purification of optical fiber materials, such as reaching a purity of 99.9999999%. (2) Improvements in the manufacturing process, such as avoiding the use of hydrogen-oxygen flame heating (vapor-phase axial deposition method)

atomic defect absorption loss

Due to heat or strong radiation, the optical fiber material will be excited to produce atomic defects, resulting in light absorption and loss, but generally this effect is very small.

Factors that Cause Fiber Loss

The loss factors of optical fiber mainly include absorption loss, scattering loss and other losses. These losses can be summarized as intrinsic losses, manufacturing losses and additional losses.

Fiber Loss Standard

There are many reasons that affect the transmission of optical fiber and cable. Transmission loss is one of them. It directly determines the transmission distance and stability of the optical network in our life and work. The transmission loss caused by the use of optical fiber mainly includes two types: splicing loss and non-splicing loss. Then you definitely want to ask how much fiber splicing loss is qualified? What is the fiber loss standard? Let's take a look at the details of the qualified fiber optic splice loss and the fiber loss standard.

To solve the splice loss, we should pay attention to the selection of high-quality optical fibers with consistent characteristics. It is recommended to choose Finite’s qualified optical fiber products. During construction, we must strictly follow the requirements, prepare a complete fiber end face, use the fusion splicer correctly, etc. to solve the non-splicing loss in design and construction. Pay attention to choosing the best laying method, take practical and effective protective measures and pay attention to construction requirements, etc. The loss of different reasons should be carefully analyzed and different methods should be used to solve and avoid

What is the qualified optical fiber splicing loss Fiber loss standard

The loss of a splicing point of an optical fiber shall not exceed 0.5dB, and generally the splicing loss is below 0.3dB. Normal optical fibers are also lossy without fusion splicing points. The so-called loss of optical fiber loss refers to the attenuation per unit length of the optical fiber, and the unit is dB/km. In the case of commonly used wavelengths of 1310nm and 1550nm, the optical loss is required to be lower than 0.3dB/km.

The transmission loss characteristic of optical fiber is one of the most important factors to determine the transmission distance, transmission stability and reliability of optical network. There are many reasons for optical fiber transmission loss. In the construction and maintenance of optical fiber communication network, the most worthy of attention is the cause of transmission loss in the use of optical fiber and how to reduce these losses.

The transmission loss caused by the use of optical fiber mainly includes splicing loss (inherent loss of optical fiber, splicing loss and active joint loss) and non-splicing loss (loss caused by bending loss and other construction factors and application environment).

The splicing loss of the optical fiber mainly includes: the intrinsic loss caused by the intrinsic factors of the optical fiber, the fusion splice loss and the movable joint loss caused by the extrinsic factors.