Disadvantages of Fiber Optics
Technicians working with fiber optics require special tools and thus require constant training on skills and knowledge.
Fiber Optics require extra precaution during handling. Mishandling cause fiber optics to increase its loss unnecessary and thus degrade the performance of fiber optics communication system.
Cost of fiber optics cables on per km basis is definitely going down due to high demand plus the abundant availability of silica but the cost of transmitter and receiver devices still on higher side.
Special Tools & Test Gears
Fiber Optics require special tools for jointing and termination purpose plus special test gears for testing, troubleshooting and maintenance. The total cost of these tools and test gears could easily amounting to thousands of dollars.
I have been in the field of fiber optics since early 1990s. I gained fiber optics skills and knowledge via my working experience as end-user, main contractor and sub-contractor and finally as an optical fiber enterpreneur.