DWDM Networks Tutorial

Name: DWDM Networks Tutorial
Rating: 4.1 (532 reviews)

Fundamentals of DWDM Network and its components i.e. transponders,muxponders, switchponders,Amps,mux/demux, ROADM

Created byArvind Kumar

Last updated 4/2025

English

What you'll learn

This course is for students and professional keen in learning DWDM network and it components. This course is useful for basic to advanced level.
Basic of optical fiber communication, signal impairments i.e. absorption, scattering, dispersions, Kerr effect. We also cover different subsystems in photonics and their fundamentals.

Course content

7 sections • 43 lectures • 5h 10m total length

Introduction4:07
This is introduction section of course, where I give brief introduction and review agenda.
Internet and Network architecture7:29
In this lecture we tries to understand what happens in one internet minute and what is the technology enabling it. We explore the network structure and various layers of networ i.e. edge, access, aggregation and core networkds.
WDM/CWDM/DWDM Technology introuction6:55
This lecture talks about what is WDM system.
Why do we need WDM system5:58
In this lecture we will learn why do we need WDM systems
XWDM/CWDM/DWDM introduction6:20
In this section we learn about XWDM, CWDM and DWDM and their differences.
Brief introduction to DWDM components7:18
In this lecture, we will go through an overview of various components used in DWDM.
Questions related to WDM/DWDM/CWDM

Questions related to optical fiber
Signal impairments in optical fiber - introduction7:12
In this lecture, we will go through basic signal impairments and their types.
Linear Signal impairments6:39
In this lecture we cover linear attenuation types
Different types of attenuations i.e. Absorption and scatterings4:51
We will look into all the factors contributing in Attenuation.
Linear scattering losses in fiber communication4:51
In this lecture we will look into different types of Linear and Non Linear scattering losses.
Non Linear Scattering losses - SBS and SRS7:25
In this lecture, we will learn about nonlinear scattering losses like SBS and SRS
Amplified Spontaneous Emission Noise in fiber7:16
In this section we will learn about ASE noise and how it is generated.
Dispersion - Modal, Chromatic and PMD9:56
This lecture gives a view of Dispersion, scattering and Attenuation graph for all the communication bands and we will review why we use C Band for our communication.
Non Linear Impairments in fiber13:33
We will learn about one of the key non linear impairment called Kerr effect in this section.
Questions related to Signal impairments
Non Linear Impairment explained with Non Linear Schrodinger Wave Equation7:00
In this lecture we will discuss Non Linear impairment with respect to NLSE.
Nonlinear Schrödinger Equation (NLSE) describes the propagation of light through a nonlinear medium. This equation accounts for both the dispersion and nonlinear effects that occur as light travels through these media
Let us apply NLSE into a network with span length of 1000 km7:43
NLSE and signal impairments

Recap of section 1 to 41:42
We recap till now whta has been covered
Long haul system and Transponders16:41
In this lecture, we would try to understand the optical transport network layers. What is the function of the transponder.
Why do we need transponders?
Transmitter section of transponder component9:57
In this lecture out focus is the transmitter and its components.
Receiver section of optical transponder11:13
We will look into optical receiver part of transponder and its components in details.
Optical Mux Demux component of DWDM10:48
In this section we will learn about Mux demux blade and its principle.
Optical Amplifiers Introduction3:00
We will learn why do we need Amps and types of Optical Amplifiers used.
Semiconductor Optical Amplifier SOA4:03
In this video we will explore about Semiconductor Optical Amplifiers.
EDFA Based Amplifier22:36
We will learn what is EDFA amp and its working principle.
RAMAN Amplifier-princple7:28
In this section, we will learn about RAMAN amplifier and its principle
RAMAN Amplifier-working12:53
In this lecture, we will learn the functionality of RAMAN amplifier
Questions related to DWDM components

Introduction2:25
This is a recap video
ROADM-What is it?4:05
In this lecture we will learn why do we need ROADM and what these ROADM devices are in DWDM networks.
A typical ROADM example5:22
In this lecture, we will see big picture of the ROADM network and how signals are added and dropped.
Why ROADM and working principle7:01
We will learn architectures of ROADM devices.
MEMS and LCOS Technology introduction2:40
We will see MEM and LCOS technologies which enables ROADM device
ROADM Function, types and architecture8:31
In this section we are covering ROADM Function its type and architectures
Colorless Direction less Contentionless ROADM and Flex grid6:30
We will see what is a colorless, directionless and contention less ROADM is
Optical Supervisory Channel (OSC)4:38
We will learn about Optical Supervisory channel, how it works, its applications.
Optical Performance Monitor(OPM) and OTDR4:27
In this lecture we will cover both OPM and OTDR components.
Questions related to ROADM and Flex Grid Technology

Introduction to Flex Grid or EON2:04
We will try to understand what EON or Flex grid is all about in this lecuture
Fixed Grid Vs Flexible Grid understanding9:48
Elastic Optical Network Characteristics4:22
In this lecture we will try to understand various characteristics of EON
Why do we need Flex Grid3:32
In this lecture we will try to build understanding why do we need EON?
Challenges in Fix grid and Flex grid networks2:47
In this lecture, we will try to understand key challenges in fix and flex grid.

Requirements

Basic understanding of networking and optical transport system

Description

This course is devised for professionals and students who wanted to understand DWDM network architecture. We start our journey by understanding our signal carrier that is light. We learn which particular band of light is used for fiber communication and why. We learn about DWDM technology. We also learn about all the different types of impairments in fiber optics communications. We have one complete section devoted to all the components used in DWDM. We talk about ROADM its architecture and types in great detail. We also touch on flex and fix grid technologies.

Who this course is for:

Beginner to advanced learners about Optical transport, DWDM network and basic of photonics

DWDM Networks Tutorial

What you'll learn

Explore related topics

Course content

Introduction6 lectures • 38min

Electromagnetic Waves as Career Signal in DWDM Networks2 lectures • 9min

Optical Fiber in DWDM system1 lecture • 19min

Signal Impairments in Optical Fiber communication10 lectures • 1hr 16min

Components of DWDM system10 lectures • 1hr 40min

Reconfigurable Optical Add Drop Multiplexer9 lectures • 46min

Elastic Optical Network/Flex Grid5 lectures • 23min

Requirements

Description

Who this course is for: