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Fiber Optic Communication: Abstarct

Fiber optic communication has advanced significantly in the last 10 years. Systems can now transmit thousands of telephone channels using cables that contain over 100 easy-to-splice multimode fibers. Fiber optic communication uses compact light sources, optical fibers, and photodetectors. It transmits voice, video, telemetry and data over long distances and local area networks using light signals instead of electrical signals. At the transmitter, input data is converted to light signals using a light source like an LED. The light signals are carried through an optical fiber to the receiver circuitry, which uses a photodetector to convert the light signals back to electrical signals.

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42 views3 pages

Fiber Optic Communication: Abstarct

Fiber optic communication has advanced significantly in the last 10 years. Systems can now transmit thousands of telephone channels using cables that contain over 100 easy-to-splice multimode fibers. Fiber optic communication uses compact light sources, optical fibers, and photodetectors. It transmits voice, video, telemetry and data over long distances and local area networks using light signals instead of electrical signals. At the transmitter, input data is converted to light signals using a light source like an LED. The light signals are carried through an optical fiber to the receiver circuitry, which uses a photodetector to convert the light signals back to electrical signals.

Uploaded by

Prathyusha
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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FIBER OPTIC COMMUNICATION

ABSTARCT
In about ten years ,efficient research and deligent technology have carried the fiber optical
communication to such a level that many systems operating with a wide range of requirements
have been devoloped throughoutthe world. Thus the cable contianing up to more than one
hundred esay-to-splice multimode fibers can transmit thousands of telephone channels,injection
lasers,light emitting diodes and photo detectors.

CIRCUIT COMPONENTS;

1.compact light source

2.optical fiber

3.photodetector

BLOCK DIAGRAM:

1.COMPACT LIGHT SOURCE:-


2.OPTIC FIBER:

Introduction

fiber optic communication is the ideal choice. This type of communication is used to transmit
voice, video, telemetry and data over long distances and local area networks or computer
networks. A fiber Optic Communication System uses light wave technology to transmit the data
over a fiber by changing electronic signals into light.

WORKING

Unlike copper wire based transmission where the transmission entirely depends on electrical
signals passing through the cable, the fiber optics transmission involves transmission of signals in
the form of light from one point to the other. Furthermore, a fiber optic communication network
consists of transmitting and receiving circuitry, a light source and detector devices like the ones
shown in the figure.

When the input data, in the form of electrical signals, is given to the transmitter circuitry, it
converts them into light signal with the help of a light source. This source is of LED whose
amplitude, frequency and phases must remain stable and free from fluctuation in order to have
efficient transmission. The light beam from the source is carried by a fiber optic cable to the
destination circuitry wherein the information is transmitted back to the electrical signal by a
receiver circuit.

The Receiver circuit consists of a photo detector along with an appropriate electronic circuit,
which is capable of measuring magnitude, frequency and phase of the optic field. This type of
communication uses the wave lengths near to the infrared band that are just above the visible
range. Both LED and Laser can be used as light sources based on the application.

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