Data Transmission through Plastic Optic Fiber

Abstract

Optic Fiber is a promising candidate for the transmission and communication purposes in the modern world. Here, the Pulse Width Modulation (PWM) technique has been revisited and used to evaluate the merits for application to analog signal transmission in plastic optic fiber links. It involves modulating an input analog signal using Pulse Width Modulation scheme. This modulated signal is launched on to the POF link of roughly one meter, received using a photo diode, and reconstructed into the original signal, which forms the output of the whole system after the process of demodulation of the optic signal received from POF link. The experimental results demonstrated during the process show that PWM scheme is potentially an attractive scheme for low cost and Local Area Network (LAN), including highly interactive offices, hospitals, and other places that require communication. Mechanical flexibility of plastic optic fiber, with diameters ranging from 110-1400 micro meters, allows them to have large cores. Following from these facts, it can be said that the use of inexpensive transmitters in integration with cost-efficient POFs make an economically attractive and efficient system. The aim of this project is to develop a short range transmission system with a considerable bandwidth, low cost, and a good efficiency.