WDM

WDM Material

1. By Prof. Hitesh Dholakiya
Engineering Funda YouTube Channel

EEE Runa ASA Optical Communication YT Playlist

2. Outline

Q Basics of WDM

Q WDM Architecture

U Bidirectional WOM

Q Components of WDM Network
O Different Technologies

Q Important features of WDM

EEE Runa ASA 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.

EEE Runa ASA Optical Communication YT Playlist

4. WDM Architecture

Wavelength Wavelength
Division Division
Multiplexer E Demultiplexer

A1+A2... AN

5. Bidirectional WDM Architecture

6. Components of WDM

« Important components of WDM Network is as follows:
Q Optical Line Terminals OLT
Q Optical Add/Drop Multiplexer
Q Optical Cross Connect

7. Technologies of WDM

< Thin Film Filter

« Fused Fiber Coupler

< Arrayed Waveguide grating
< Interleaver

8. Important feature of WDM

+ Wavelength reuse

+ Wavelength conversion
< Transparency

* Circuit switching

<* Survivability