( 1 ) Illustrated Guide to Fiber Optic Cable Pipe Laying and Cable Construction

optical cable construction is a very important job. How to construct it in a standardized way? What are the technical requirements?

Overview of coMMunication optical cable engineering

01

Communication optical cable engineering is mainly divided into overhead optical cable engineering, direct buried optical cable engineering, pipeline optical cable engineering, waterline optical cable engineering and submarine optical cable engineering.

The optical cable is relatively long

The standard manufacturing length of general optical cables is 2km. When laying optical cables, do not cut the optical cables at will and add optical cable joints.

The tensile strength of optical cables is relatively SMall

When the tensile force on the optical fiber exceeds its tensile limit, it will break. Strengthening components are added to the structure of the optical cable, and the tensile strength required by the optical cable is mainly borne by the strengthening components. During the construction process, the traction force cannot exceed the rated value allowed by the optical cable, so that the optical fiber does not produce tensile strain as much as possible. The traction force allowed by the optical cable has different rated values according to the different manufacturing procedures of the optical cable, and this must be paid attention to during construction. The tensile strength of general optical cables is 100-300kg.

The optical cable has a smaller diameter and lighter weight.

The optical fiber connection technology requires higher requirements and the splicing is more complicated.

The splicing of optical fibers requires melting the optical fiber end faces at high temperatures and then bonding them together by the viscosity of quartz glass. Therefore, the equipment required for the connection is more complicated and the technical requirements are relatively high.

Overhead optical cable installation specifications

02

Electric pole installation

▼

Construction process

▼

Line construction

▼

Pulling wire, hanging wire connection

▼

Joint box use

▼

Optical cable entry

▼

Pipeline optical cable installation specifications

03

According to the material, the pipeline can be divided into:

Concrete pipe

Plastic pipe

Steel pipe

Cast iron pipe

Asbestos cement pipe

Ceramic pipe

Plastic pipe is mostly used

Features of plastic pipe:

Light weight, smooth pipe wall, simple connection, good water tightness, good corrosion resistance, good insulation performance, convenient transportation, poor cold resistance, poor thermal stability, high price

Pipeline construction

▼

Pipeline slope

▼

Manhole

▼

Cable laying

▼

Acceptance Standards for Optical Cable Lines

04