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WDM Basics for Engineering Students

WDM (wavelength division multiplexing) is a technology that increases the capacity of an optical fiber by allowing multiple signals of different wavelengths to be transmitted through the fiber simultaneously. The key components of a WDM network include optical line terminals, optical add/drop multiplexers, and optical cross connects. WDM uses a multiplexer to combine different wavelength signals and a demultiplexer to separate them out at the receiving end. Bidirectional WDM architectures transmit signals in both directions through a fiber. Important WDM technologies include thin film filters, fused fiber couplers, and arrayed waveguide gratings.

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2K views8 pages

WDM Basics for Engineering Students

WDM (wavelength division multiplexing) is a technology that increases the capacity of an optical fiber by allowing multiple signals of different wavelengths to be transmitted through the fiber simultaneously. The key components of a WDM network include optical line terminals, optical add/drop multiplexers, and optical cross connects. WDM uses a multiplexer to combine different wavelength signals and a demultiplexer to separate them out at the receiving end. Bidirectional WDM architectures transmit signals in both directions through a fiber. Important WDM technologies include thin film filters, fused fiber couplers, and arrayed waveguide gratings.

Uploaded by

Simon Jha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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WDM

By Prof. Hitesh Dholakiya


Engineering Funda YouTube Channel

Engineering Funda YouTube Channel


Outline
 Basics of WDM
 WDM Architecture
 Bidirectional WDM
 Components of WDM Network
 Different Technologies
 Important features of WDM

Engineering Funda YouTube Channel


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.

Engineering Funda YouTube Channel


WDM Architecture

Engineering Funda YouTube Channel


Bidirectional WDM Architecture

Engineering Funda YouTube Channel


Components of WDM
 Important components of WDM Network is as follows:
 Optical Line Terminals OLT
 Optical Add/Drop Multiplexer
 Optical Cross Connect

Engineering Funda YouTube Channel


Technologies of WDM
 Thin Film Filter
 Fused Fiber Coupler
 Arrayed Waveguide grating
 Interleaver

Engineering Funda YouTube Channel


Important feature of WDM
 Wavelength reuse
 Wavelength conversion
 Transparency
 Circuit switching
 Survivability

Engineering Funda YouTube Channel

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