WDM Material

1. WDM
By Prof. Hitesh Dholakiya
Engineering Funda YouTube Channel
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Engineering Funda Android App
Optical Communication YT Playlist

2. Outline
 Basics of WDM
 WDM Architecture
 Bidirectional WDM
 Components of WDM Network
 Different Technologies
 Important features of WDM
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Engineering Funda Android App
Optical Communication YT Playlist

3. Basics of WDM
 It is Wavelength Division Multiplexing
 WDM is used to increase capacity of single standard fiber
 Here, a number of light sources are used with different wavelength.
 Using Multiplexer, all signals are transmitted by single fiber.
 At receiver side, Demultiplexer separates different wavelength and
gives it to different receiver.
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Engineering Funda Android App
Optical Communication YT Playlist

4. WDM Architecture
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5. Bidirectional WDM Architecture
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6. Components of WDM
 Important components of WDM Network is as follows:
 Optical Line Terminals OLT
 Optical Add/Drop Multiplexer
 Optical Cross Connect
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7. Technologies of WDM
 Thin Film Filter
 Fused Fiber Coupler
 Arrayed Waveguide grating
 Interleaver
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8. Important feature of WDM
 Wavelength reuse
 Wavelength conversion
 Transparency
 Circuit switching
 Survivability
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