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Some basic knowledge of optical fiber and optical cable

Update:02-06-2021
Summary:

What are the application structures of OPGW optical cab […]

What are the application structures of OPGW optical cables?
Mainly include: 1) the structure of plastic tube layered + aluminum tube; 2) the structure of central plastic tube + aluminum tube; 3) aluminum skeleton structure; 4) spiral aluminum tube structure; 5) single-layer stainless steel tube structure (central stainless steel tube) Structure, stainless steel tube layer stranded structure); 6) Composite stainless steel tube structure (central stainless steel tube structure, stainless steel tube layer stranded structure).

What is the main composition of the stranded wire outside the core of the OPGW optical cable?
It is composed of AA wire (aluminum alloy wire) and AS wire (aluminum clad steel wire).

To choose the OPGW cable model, what are the technical conditions that should be possessed?
1) Nominal tensile strength (RTS) (kN) of OPGW cable; 2) Number of fiber cores (SM) of OPGW cable; 3) Short-circuit current (kA); 4) Short-circuit time (s); 5) Temperature range ( ℃).

How is the degree of bending of the optical cable limited?
The bending radius of the fiber optic cable should not be less than 20 times the outer diameter of the fiber optic cable, and during the construction process (non-stationary state), it should not be less than 30 times the outer diameter of the fiber optic cable.

What should be paid attention to in the ADSS optical cable project?
There are three key technologies: optical cable mechanical design, determination of suspension points, and selection and installation of supporting hardware.

What are the main fiber optic cable fittings?
Optical cable fittings refer to the hardware used to install the optical cable, mainly including: tension clamp, suspension clamp, vibration isolator, etc.

Optical fiber connectors have two basic performance parameters, what are they?
Optical fiber connectors are commonly known as flexible joints. The optical performance requirements of single-fiber connectors are focused on the two most basic performance parameters of insertion loss and return loss.

What is the insertion loss (or insertion loss) of an optical fiber connector?
Refers to the amount of effective power reduction of the transmission line caused by the intervention of the connector. For users, the smaller the value, the better. ITU-T stipulates that its value should not be greater than 0.5dB.

Ningbo Guangdao Communication Technology Co., Ltd. is fiber optic termination box Manufacturers

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