Telecommunication - PowerPoint PPT Presentation

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Telecommunication

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Simplex cable: contains a single fiber for one-way communication ... without mechanical interconnection between cockpit flying controls and control surfaces. ... – PowerPoint PPT presentation

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Title: Telecommunication


1
Industrial Applications of Fiber Optics
  • Telecommunication
  • Aerospace
  • Defence

Service providers
End users
Access providers
2
Applications in Telecommunication
  • Fiber optic communication systems
  • Fiber optic sources
  • Fiber optic cables
  • Fiber optic photo detectors

3
Applications in Telecommunication
  • Fiber optic communication systems
  • Basic fiber optic communication system

4
Applications in Telecommunication
  • Time- Division Multiplexing (electrical)
  • Wavelength- Division Multiplexing (optical)

5
Applications in Telecommunication
  • Time- Division Multiplexing (electrical)

MUX Time- Division Multiplexer DEMUX Time-
Division Demultiplexer
6
Applications in Telecommunication
  • Wavelength- Division Multiplexing (optical)

EDFA Erbium- Doped Fiber Amplifier WDM
Wavelength- Division Multiplexer
7
Applications in Telecommunication
  • North American Digital Telephone Hierarchy

MUX Time- Division Multiplexer
8
Applications in Telecommunication
  • North American SONET telephone Hierarchy

SONET Synchronous Optical Network
9
Applications in Telecommunication
  • WDM ITU Grid
  • Transmission windows

ITU International Telecommunication Union
10
Applications in Telecommunication
  • WDM spectra

8 LASER wavelengths
wavelength
11
Applications in Telecommunication
  • Fiber optic sources
  • LED versus LASER diode

spontaneous light source
coherent light source
12
Applications in Telecommunication
  • Fiber optic sources
  • LED LASER power

13
Applications in Telecommunication
  • Fiber optic sources
  • Direct versus external modulation

14
Applications in Telecommunication
  • Fiber optic indoor cables
  • Simplex cable contains a single fiber for
    one-way communication
  • Duplex cable contains two fiber for two-way
    communication
  • Breakout cable has several simplex cable inside
    an outer jacket, which includes a zipcord to
    allow easy access

15
Applications in Telecommunication
  • Fiber optic outdoor cables
  • Direct indirect burial placed in trenches or
    in conduits
  • Powerline aerial ground wire
  • Submarine underwater, placed in sewer tube

16
Applications in Telecommunication
  • Fiber optic photo detectors
  • Photo detector spectral response

Si Silicon InGaAsP Indium-Gallium-Arsenide-Phosp
hor Ge Germanium InGaAs Indium-Gallium-Arsenide
17
Applications in Telecommunication
  • Fiber optic photo detectors
  • Typical photo detector amplifier circuit

Electrical signal through coaxial cable
Optical signal through fiber optic cable
18
Applications in Telecommunication
  • Fiber optic photo detectors
  • Photo detector characteristics

PN Type
PIN Type
19
Industrial Applications of Fibre Optics
  • Fiber Optic Technology in Telecom-munications has
    opened the market for many other applications as
  • Defence
  • Aerospace
  • Tactical access link
  • Radar / fire control systems
  • Fly- by- light Flight control
  • Fly- by- light Engine control
  • Fly- by- light Flight system

20
Applications in Defence
  • Tactical access links
  • Radar / fire control systems

21
Applications in Defence
  • Tactical access links

Communication with short range RADAR link
connected with up to 4 km hybrid cable (copper
fiber) link.
22
Applications in Defence
  • Radar / fire control systems

Fiber optic Joint- Force- Integrator
Fiber optic cable on hand reel
Fiber Optic Line Termination Unit
23
Applications in Defence
  • Tactical fiber optic cable

Leopard tank 55-tons
24
Applications in Aerospace
  • Fly by Wire

Fly-by-wire Flight control system with
electrical signalling, without mechanical
interconnection between cockpit flying controls
and control surfaces.
Boeing 747
Saab Gripen
25
Applications in Aerospace
  • Fly by Wire
  • Flight control with DIGITAL FLY-BY-WIRE

Vought F-8
26
Applications in Aerospace
  • Fly by Light

Fly-by-light Flight control system in which
signals pass between computers and actuators
along fibre optic systems.
27
Applications in Aerospace
  • Fly by Light
  • Flight control
  • Engine control

28
Applications in Aerospace
  • Fly by Light
  • Flight control

Different sensors in the plane (optical,
electrical fiber) send data over fiber to a
flight control system.
29
Applications in Aerospace
  • Fly by Light
  • Engine control

Different sensors at the jet engine (optical,
electrical fiber) send data over fiber to an
engine control system.
30
Applications in Aerospace
  • Fly by Light
  • Flight system

Different units of the plane (advanced mission
computer, electronic control unit, power drive
unit, ) are linked together by a fiber optic
flight system.
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