How You Can Install and Test the Fiber Optic Cables

November 20 [Wed], 2013, 16:17
In the telecommunications industry today, how to install the fiber optics that each optical engineer must learn in their work. Don't froget, when you install the fiber optics, you have to testing your fiber optic system. Optical-fiber tests are one of the final and many important procedures in installing optical networks.

How to set up the fiber optic cable?

Fiber optic cable may be installed indoors or outdoors using several different installation processes. Outdoor cable might be direct buried, pulled or blown into conduit or innerduct, or installed aerially between poles. Indoor cables could be installed in raceways, cable trays,put into hangers, pulled into conduit or innerduct or blown though special ducts with compressed gas. Cellular phone process will depend on the nature of the installation and also the kind of cable being used. Installation methods for both wire and optical fiber communications cables are similar. Fiber cable is designed to be pulled with much greater force than copper wire if pulled correctly, but excess stress may harm the fibers, potentially causing eventual failure.

The install fiber optic cable tips:

a) Stick to the cable manufacturer's recommendations. Fiber optic cable is often custom-designed for that installation and the manufacturer might have specific instructions on its installation.

b) Check the cable length to make sure the cable being pulled is long enough for that go to prevent needing to splice fiber and provide special protection for the splices.

c) Attempt to complete the installation in a single pull. Just before any installation, assess the route carefully to look for the ways of installation and obstacles likely to be encountered.

Testing fiber optic cables steps:

After installation, test each fiber in most fiber optic cables for verification of proper installation. Carry out the following tests:

a) Continuity testing to find out that the fiber routing and/or polarization is correct and documentation is proper.

b) End-to-end insertion loss utilizing an OLTS power meter and source. Test multimode cables by using TIA/EIA 526-14 Method B, and single-mode cables using TIA/EIA 526-7 (single-mode). Total loss shall be under the calculated maximum loss for the cable based on appropriate standards or customer specifications.

c) Optional OTDR testing may be used to verify cable installation and splice performance. However, OTDR testing shall not be accustomed to determine cable loss.

d) If the design documentation does not include cable plant length, which is not recorded during installation, test the length of the fiber using the length feature on an OTDR, or some OLTSs.

e) If testing shows variances from expected losses troubleshoot the issues and proper them.

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