Construction of a fiber optic network is a complex and lengthy process.
Construction of a fiber optic network is a complex and lengthy process. Numerous contractors are involved and the entire process can take six to 12 months to complete, depending upon the length of the circuit, the terrain and soils, weather and other external factors. Most CVEC distribution lines are a mix of overhead and underground construction. The following discussion covers the phases of construction along overhead distribution lines. You can see each step below:
Step 1: Make Ready Engineering
After an in-house autodesign of the ﬁber build, ﬁeld engineers go to each pole to determine if any modiﬁcations are required in order to support the ﬁber and its associated steel strand. These engineers create design sheets showing where to move items at the pole to create more space, as well as where poles need to be changed out to add height or strength. During this time, inspectors will “ride out” the build to ensure every member will be included in the ﬁber build. This phase can take two to four weeks
Step 2: Make Ready Construction
Line crews will change poles, move transformers from one side of the pole to another, move wires on the pole, add new anchors to the poles, and perform other work to allow the ﬁber to be placed later. The make ready construction phase can take four to twelve weeks as a rule of thumb. This work has the widest variance in time of all construction phases.
Step 3: Fiber Construction
Fiber crews place steel strand along the pole line and return to place the ﬁber optic cable against the steel strand. A lashing machine is used to secure the ﬁber to the strand. In locations where the electric is underground, the ﬁber optic cable will be placed in a small plastic pipe underground by either boring or plowing. Asphalt and concrete driveways will be bored under and a pedestal may be placed next to a transformer or junction box to allow for a service drop. Areas of disturbance are restored to their original state. Fiber construction can take four to eight weeks on a circuit.
Step 4: Splicing
Once the strand and ﬁber is placed, splicers will make splices at each end and tap point. They splice the necessary cables at each point and mount the splices in enclosures secured to the distribution poles or in pedestals. The splicing work can take another three to six weeks for the main lines.
Step 5: Service Drop Construction
The next step is service drop construction. This work can be done in parallel with some of the earlier work, or it might be done after the main line ﬁber is in place. The drop crews extend the ﬁber from the nearest splice point to the structure receiving service and leave coils of ﬁber in each location.
Step 6: Drop Splicing
The ﬁnal outdoor step in ﬁber construction is the splicing of the drop. The splicer connects the last length of ﬁber at the tap point and also mounts a network interface device (NID) at the structure with the ﬁnal splice inside the NID. The service is now ready to turn over to Fireﬂy for installation
As you can see , there will be multiple different contractors and vehicles passing each point over several months before the service is ready for final installation.