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Shamu ppt


is a method of transmitting information from

one place to another by sending light through
an optical fiber.


The light forms an electromagnetic carrier
wave that is modulated to carry information.
Information
source

Electrical
source

Optical
source

Optical
fiber cable

Optical
detector

Electrical
receive

Destination




An optical fiber (or fibre) is a glass or
plastic fiber that carries light along its
length.

Its function is to guide
visible and infrared
light over long distances.
Shamu ppt






Core – central tube of very thin size and
carries the light form transmitter to receiver.
Cladding – outer optical material
surrounding the core having reflecting index
lower than core.
Buffer Coating – plastic coating that protects
the fiber made of silicon rubber.
Shamu ppt
Shamu ppt
Shamu ppt
Shamu ppt
Shamu ppt


TOTAL INTERNAL REFLECTION
Light travels from a denser to a rarer
medium



The angle of incidence is greater than the
critical angle



reflection into the same medium



repeated number of internal reflections
until it emerges out of the other end of the
fiber, even if the fiber is bent.
Shamu ppt
 LED

 PIN

 LASER

 AVALANCHE

PHOTODIODE
PHOTODIODE
SINGLE MODE FIBER (SMF):


Transmits one signal per fiber (used in telephone and
cable TV).



Uses infrared light from laser.



smaller core (<10 micrometers)



more expensive components and interconnection
methods.



allows much longer, higher-performance links
MULTI MODE FIBER (MMF):









used to transmit many signals per fiber (used in
computer networks).
Transmits infrared light from LED.
They have larger cores((≥ 50 micrometers)
less precise, cheaper transmitters and receivers
and cheaper connectors.
introduces multimode distortion
limits the bandwidth
more expensive and exhibits higher attenuation.
Shamu ppt














Immunity to Noise
Safety.
High Security
Less Loss
Reliability
Size
Flexibility
Much Higher Bandwidth (Gbps)
Longer life
Cost Effective
Higher transmission rate of 100Mbps.
supports voice, video and data.


expensive over short distance



requires highly skilled installers



cost of interfacing equipment



Maintenance and repairing cost is high.













Telecommunications
In space applications
Broadband applications
Computer applications
Industrial applications
Mining applications
In medical applications
In military applications
Local Area Networks
Cable TV
CCTV
Shamu ppt
Shamu ppt
Shamu ppt

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Shamu ppt

  • 2.  is a method of transmitting information from one place to another by sending light through an optical fiber.  The light forms an electromagnetic carrier wave that is modulated to carry information.
  • 4.   An optical fiber (or fibre) is a glass or plastic fiber that carries light along its length. Its function is to guide visible and infrared light over long distances.
  • 6.    Core – central tube of very thin size and carries the light form transmitter to receiver. Cladding – outer optical material surrounding the core having reflecting index lower than core. Buffer Coating – plastic coating that protects the fiber made of silicon rubber.
  • 12.  TOTAL INTERNAL REFLECTION Light travels from a denser to a rarer medium  The angle of incidence is greater than the critical angle  reflection into the same medium  repeated number of internal reflections until it emerges out of the other end of the fiber, even if the fiber is bent.
  • 14.  LED  PIN  LASER  AVALANCHE PHOTODIODE PHOTODIODE
  • 15. SINGLE MODE FIBER (SMF):  Transmits one signal per fiber (used in telephone and cable TV).  Uses infrared light from laser.  smaller core (<10 micrometers)  more expensive components and interconnection methods.  allows much longer, higher-performance links
  • 16. MULTI MODE FIBER (MMF):        used to transmit many signals per fiber (used in computer networks). Transmits infrared light from LED. They have larger cores((≥ 50 micrometers) less precise, cheaper transmitters and receivers and cheaper connectors. introduces multimode distortion limits the bandwidth more expensive and exhibits higher attenuation.
  • 18.             Immunity to Noise Safety. High Security Less Loss Reliability Size Flexibility Much Higher Bandwidth (Gbps) Longer life Cost Effective Higher transmission rate of 100Mbps. supports voice, video and data.
  • 19.  expensive over short distance  requires highly skilled installers  cost of interfacing equipment  Maintenance and repairing cost is high.
  • 20.            Telecommunications In space applications Broadband applications Computer applications Industrial applications Mining applications In medical applications In military applications Local Area Networks Cable TV CCTV