Fiber optics communications offers several advantages over metallic systems. The transmitted signals are not distorted by any form of outside electronic, magnetic, or radio frequency interference. Therefore, optical cables are completely immune to lightning or high voltage interference.

Furthermore, optical fibers will emit no radiation, which ideally suits them for today's tougher standards in computer applications. Because optical signals do not require grounding connections, the transmitter and receiver are electrically isolated and free from ground loop problems.

With no chance of terminal-to-terminal ground potential shifts, plus safety from sparking and shock, fiber optics is increasingly the choice for many processing applications where safe operations in hazardous or flammable environments is a requirement.

Digital computing, telephone, and video broadcast systems require new avenues for improved transmission. The high signal bandwidth of optical fibers means increased channel capacity. Also, longer cable runs require fewer repeaters, because fiber optic cables have extremely low attenuation rates. This ideally suits them for broadcast and telecommunications use.

Compared to conventional coaxial cables with the same signal carrying ability, the smaller diameter and lighter weight of fiber optic cables means relatively easier installation, especially in crowded duct areas. A single conductor fiber optic cable weighs about 6 lbs. per 1,000 feet. A comparable coaxial cable weighs 80 lbs. per 1,000 feet - about 13 times more.

Electronic "bugging" depends on electro-magnetic monitoring. Fiber optic systems are immune to this technique. They have to be physically tapped to extract data, which decreases signal levels and increases error rates - both of which are readily detected. The table below summarizes the many features of fiber optic systems.

Features of Fiber Optic Systems: