FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Fiber optic cables use strands of glass to propagate light. The light pulses transport communication signals between devices. At the center of the fiber optic strand is a small inner core that carries the propagated light. Surrounding the core is the outer cladding.

Detailed explanation-2: -Laser light is used for optical fiber communications for the simple reason that it is a single wavelength light source. Sunlight or the light emitted by a light bulb is a mixture of many different wavelengths of light.

Detailed explanation-3: -Fiber offers much less signal loss than coaxial cable, which means longer distances. Coaxial cable suffers from considerable signal loss when you get into longer cable runs. Fiber optic links are almost loss-less, so engineers can plan and install links of 10Km or longer, with very little signal loss.

Detailed explanation-4: -Singlemode fibre has a much smaller core size of 9 microns and has a single light path and can travel much longer distances of up to 100km. These require more expensive electronics which operate in the 1310 and 1550nm windows and are typically used in longer distance LAN’s, Cable TV and telephony applications.

Detailed explanation-5: -Light travels down a fiber optic cable by bouncing off the walls of the cable repeatedly. Each light particle (photon) bounces down the pipe with continued internal mirror-like reflection. The light beam travels down the core of the cable. The core is the middle of the cable and the glass structure.