1. IIMT INSTITUTE OF ENGINEERING &
TECHNOLOGY
OPTICAL FIBER
CABLE
Presented by: MUNNA KUMAR
B.Tech(E.C.-’A’)
3RD
yr.
Roll no.- 1037131040
Submitted to:-Dr. P. K. Singh
&
Mr. Pushpendra
9. OFC Construction
Parameters of Cabling
Tensile Strength ( Pull)
Crushing Resistance
Protection from Excess Bending
Abrasion Protection
Anti-Twist
Chemical protection
10. Single Mode Fibre
The Core dia is 8 to 10 Micrometer
A much smaller core Diameter
Cladding dia is 125 Micrometer
Very large bandwidth
Light can go for very long
distances
DWDM application (80 lamda)
11. MULTYMODEMULTYMODE
FIBERFIBER
Has a large Core Diameter
Core Diameter - 50, 62.5, 100 Micro meter
Cladding dia - 125 Micro meter
Light waves are dispersed into number of paths
Multiple path of light cause signal distortion
Suitable for shorter length like LAN
17. WINDOWSWINDOWS
• Window is range of wave length whereWindow is range of wave length where
attenuation is minimumattenuation is minimum
• 1).850nm---(800-850nm)1).850nm---(800-850nm)
• 2).1300nm---(1250-1300nm)2).1300nm---(1250-1300nm)
• 3).1550nm---(1500-1550nm)3).1550nm---(1500-1550nm)
18. AttenuationAttenuation
• Gradual losses in the intensity data informationGradual losses in the intensity data information
in ofc1win ofc1w
• 1).INTRINSIC:due to internal factor1).INTRINSIC:due to internal factor
Absorption, scatteringAbsorption, scattering
• 2).EXTRINSIC:due to bending of ofc2).EXTRINSIC:due to bending of ofc
(a)(a) Macro bendingMacro bending
(b)(b) Micro bendingMicro bending
(c)(c) Numerical apparatureNumerical apparature
20. SPLICINGSPLICING
• Splicing is technique to joining of two opticalSplicing is technique to joining of two optical
fiber cable by the splicing machinefiber cable by the splicing machine
• There are two techniquesThere are two techniques
1).MECHANICAL1).MECHANICAL
2).FUSION : Is done by heating2).FUSION : Is done by heating
22. OTDROTDR
• Optical time domain reflectometer is a deviceOptical time domain reflectometer is a device
use to detect the distance at which ofc getuse to detect the distance at which ofc get
cutcut
• By this method OTDR is connected at oneBy this method OTDR is connected at one
end a laser beam is allow to flow in ofc it getend a laser beam is allow to flow in ofc it get
bounce back from the cutting point due tobounce back from the cutting point due to
change in R.Ichange in R.I
S=CTS=CT
C=SPEED OF LIGHTC=SPEED OF LIGHT
T=TOTAL TIME
24. Advantages of Optic Fibre
large bandwidth
Low Loss - 0.5db per km
Less number of Repeaters
Small size & Light Weight - Easy
to handle
Greater Safety - No Electric
Hazards
Higher Security
Available long length
Universal medium
25. OFC Applications
Telecommunication /automation Network
Junction Network & Long Distance
Network
Submarine cable
High EMI areas
Explosive environment
High lightening area
Computer links & Local Area Network
Cable television
Medical Field , Automobile Field
Military application
27. 1844 Telegraph 5 bits /sec
1876 Telephone 2 kb/sec
1956 Trans Atlantic 1152 kb/sec
• OFC 45000 kb/sec
Today 2-3 Terra bit/sec
• The Transport Capacity of
OFC advances by 100 times
every 10 years
Improvements in Fibre