FIBRE OPTICSTsang Siu Chung (11019700)

Wong Ho Tsun(11008830) Yeung Sai

Wing(11008768)

Monday, 28 November 2011

PRESENTATION OUTLINE

O

bjectives of this project

P

rinciples of fibre optics

A

pplications of using fibre optics

A

nalysis on online survey results

B

rief summary

OBJECTIVES

H

ow fibre optics can be used in our daily lives?

W

hy fibre optics?

H

ow convenient are fibre optics?

H

ow fibre optics changing our life and benefit us?

PRINCIPLES OF HOW IT WORKS

COMPONENT OF FIBER OPTICS

C

ore - Thin glass center of the fiber where the light travels

C

ladding - Outer optical material surrounding the core

that reflects the light back into the core

B

uffer coating - Plastic coating that protects the fiber

from damage and moisture

DIFFERENT TYPES OF FIBER OPTICS

S

ingle-mode fibers have small cores and transmit

infrared laser light (wavelength = 1,300 to 1,550 nm).

Multi-mode fibers have larger cores and transmit

infrared light (wavelength = 850 to 1,300 nm) from

LEDs.

THEORY OF FIBER OPTICS

T

otal internal reflection : If the reflection index is lower

on the other side of the boundary and the incident angle is

greater than the critical angle, no light can pass through and all

of the light is reflected.

WHAT WAYS CAN FIBER OPTICS USED IN?

C

ommunication

M

edical

O

ther use

FIBER OPTICS USED IN COMMUNICATION

C

ATV(cable television) : provide TV programs via radio frequency

(RF) signals through optical fibers.

D

ata Transmission Fiber Optics : a sending and receiving of data

from point to point via a network.

I

nternet system : Internet use the standard Internet protocol suite

(TCP/IP) to serve billions of users worldwide. It’s mainly linked by

optical networking technologies.

MEDICAL AND OTHER USE OF OPTICAL FIBER

F

iberscope : examine small components in tightly packed

equipment

O

ptical fibers sensors : measure strain, temperature, pressure

and other quantities by modifying a fiber

I

llumination : Light tubes or light pipes are used for

transporting or distributing natural or artificial light.

HOW GOOD IT IS ?

Cost -

1.Fiber optics glass cost less as compared to copper wires

Efficiency -

1. Speed of data transfer is faster.

2. Light signals degrade lesser than copper conductors.

3. Light signals require lesser power to be transmitted.

Convenience -

1. Less weight and more flexible than copper wires.

2. Easier to carry, bundle and set up.

3. Do not heat up and are non-flammable.

ANALYSIS OF THE ONLINE SURVEY RESULTS

C

onducted through Qualtrics

O

ver 80 respondents aged from 18 to 45-year-old

1

2 questions involved, ranged from personal habits to

business companies

DOES YOUR COMPANY(OR SCHOOL) USE FIBER OPTICS ?

64% of respondents vote yes

Fibre optics are popular in the daily life

DO YOU USE FIBER OPTICS AT HOME ?

6

4% of respondents vote yes

F

ibre optics is a useful tool

P

roviding faster speed

DO YOU THINK FIBER OPTICS IS CONVENIENT ?

A

majority of people vote yes

F

ibre optics is well-used

F

ibre optics is more compact, less

space is used

DO YOU KNOW FIBER OPTICS CAN BE USED IN MEDICAL SERVICES ?

M

any respondents vote no

M

edical services with fibre

optics are so new to

people

N

ot a well-known use

HOW MUCH DO YOU SATISFY WITH THE PERFORMANCE OF FIBER OPTICS ? (1-

LEAST, 5-MOST)

P

eople mostly are satisfied

with the fibre optics

I

t is convenient and does

not cost much

WHICH ONE DO YOU PREFER FOR INTERNET CONNECTION?

- People love using fiber optics much more than copper wire

- People are generally adapted to using fiber optics

DO YOU KNOW THE THEORY BEHIND FIBER OPTICS TECHNOLOGY ?

S

ome people don’t know the

basic principles of the

operation of fiber optics

P

eople just focus on how the

tool benefits them basically

DO YOU THINK FIBER OPTICS IS A SIGNIFICANT IMPROVEMENT IN THE MODERN TECHNOLOGY HISTORY ?

T

he discovery of fiber

optics is brilliant

T

his innovation signifies the

huge improvement in the

modern technology history

~THE END~

Thank you for watching