After the optical fiber is connected, the light passing through the joint will produce a certain loss, which is called the optical fiber connection transmission loss, that is, the joint loss. Now mainly analyze the factors of single-mode optical fiber connection loss through carrier-grade optical fiber connectors.
Carrier Grade Fiber Optic Connectors
1. Intrinsic factors
The single-mode fiber that has the greatest impact on the connection is the mode field diameter. When the mode field diameters are mismatched by 20%, more than 0.2 dB loss will occur. It is of great significance to use the optical fiber with the smaller mode field diameter as much as possible to reduce the splice loss.
2. External factors
The main factors for the loss of single-mode carrier-grade optical fiber connectors are the axial dislocation and axial inclination. For mechanical connections, there are also factors such as longitudinal splitting and fusion core deformation.
(1) Axial misalignment. When the dislocation reaches 1.2 μm, the loss caused can reach 0.5 dB, which improves the accuracy of the connection positioning and can effectively control the influence of the axial dislocation.
(2) Axial tilt. When the tilt reaches 1°, a loss of 0.2 dB will be incurred. Use high-quality fiber cleavers to improve the loss caused by axial tilt.
3. Core deformation
When the current, propulsion, discharge current and time of the automatic fusion splicer are set reasonably, the loss caused by the core deformation can be less than 0.02 dB.
Carrier-grade fiber optic connector application scenarios
Through today's introduction, I believe that everyone has an understanding of the reasons for the loss of carrier-grade fiber optic connectors. If you want to know more about ZR optical fiber series products, welcome customers to come to consult.
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