(FIBER OPTIC COMMUNICATION)
CONTENTS
❖ Introduction
❖ Advantages of Fiber Optics
❖ Optical Transmitters
❖ The Optical Fiber
❖ Launching the Light
❖ Losses in Optical Fiber
❖ Optical Fiber Bandwidth
❖ Fiber Optic Cable Construction
❖ Other Types of Fibers
❖ Optical Receivers
Introduction
Our current "age of technology" is the result of many brilliant inventions and discoveries, but it is our ability to transmit information, and the media we use to do it, that is perhaps most responsible for its evolution . Progressing from the copper wire of a century ago to today's fiber optic cable, our increasing ability to transmit more information, more quickly and over longer distances has expanded the boundaries of our technological development in all areas.
Today's low-loss glass fiber optic cable offers almost unlimited bandwidth and unique advantages over all previously developed transmission media. The basic point-to-point fiber optic transmission system consists of three basic elements: the optical transmitter, the fiber optic cable and the optical receiver.
The Optical Transmitter:
The transmitter converts an electrical analog or digital signal into a corresponding optical signal. The source of the optical signal can be either a light emitting diode, or a solid state laser diode. The most popular wavelengths of operation for optical transmitters are 850, 1310, or 1550 nanometers.
Most Fiberlink® transmission equipment manufactured by Communications Specialties operates at wavelengths of 850 or 1310nm.
[pic]
|The Optical Fiber |
|Launching the Light