DWDM & Optical Networking
Course Duration  
5-day instructor-led training, 0900-1700

Course Instructor
 
The trainer has 30 years of solid track record in Telco environment, both in consulting as well as management capacity. He was the CEO of Ganesa Telecommunications. At Ganesa, he started up the Rural CLEC focusing on placement of fibre-to-the-premise and the "Triple Play" product offerings in Oklahoma, Arkansas, Alabama, Georgia, and Florida. Apart from P/L responsibilities, he has oversight of the design, installation, site acquisitions, procurement, commissioning and operations of FTTP network offering voice, CATV, and IP services via FTTP network.

Prior to Ganesa, he was the Program Director of Winstar Hong Kong. At Winstar, he was responsible for the design, installation, site acquisitions, procurement, commissioning and operations of LMDS network offering voice and IP services via LMDS network.

Before Winstar, he was a Technical Consultant with Teleglobe, and was responsible for the redesign of telephony networks, including their Interconnects and SS7 networks.

During his career, he has built five international Greenfield telecommunications companies,.

Other positions he had previously held were, namely, Program Director of Fibrenet Telecom Group (where he was responsible for turnkey design, installation and commissioning of a SONET-based transmission network that encompassed (8) strands of fibre in downtown Manhattan), Technical Consultant for XO Communications, Global Telesystems Inc, Program Director for Saudi Aramco etc.

Course Objectives
After completing this course, students will be able to:
  • Overview of the technologies and concepts that make DWDM and optical network, including DWDM OADMs, Optical Amplifiers, Cross Connects, and components
  • Explain advanced DWDM Network designs and Engineering
  • Design and evaluate optical components in a DWDM network
  • Learn about the effects of noise in signal propagation, especially form OSNR and BER perspectives
  • Design optical amplifier-based links
  • Learn how to design optical links based on power budget, dispersion, and non-linearity’s
  • Design optical links based on OSNR
  • Classify and design DWDM networks based on size and performance
  • Identify varying test and measurement parameters in DWDM networks and optical systems
  • Understand the migratory path toward an OTN
  • Optical networking in the metro and access networks
  • Where optics are today and where optical technology is headed in the near future

Course Overview
 
Optical fibre communications applications have extended from single wavelength per fibre technology to multiple wavelength technology known as wavelength division multiplexing (WDM). As the number of wavelength per fibre is equal or greater than 8, the technology is then referred to as dense wavelength division multiplexing (DWDM), greater than or equal to 40 is very dense wavelength division multiplexing (VHDWDM) and greater than 1000 is possible with today’s lab technology and goes by different names.

The course includes:
  • Discussion of DWDM concept and vision.
  • The key enabling technologies required for implementing DWDM (i.e. stable transmitter, suitable fibres, erbium-doped optical amplifiers, optical filters and wavelength converter).
  • The DWDM optical network architecture (static and reconfigurable networks) and network applications are included in the discussion.
  • Optical layer management (configuration, performance, and fault management) is discussed.
  • Optical networking in the metro and access networks.

Pre-Requisites for Participants
This course is an advance level course, as such, attendees, should have working knowledge of optical fibre and SDH.

Who Should Attend?
This course is designed for strategic or technical managers, consultants, communications professionals, software engineers, systems engineers, network professionals, marketing and sales professionals, IT professionals, and others who plan on using, evaluating, or working on DWDM and optical networks applications and services.

Course Outline
Introduction to Optical Networking
  • Optical Fibres
  • Fibre losses
  • Dispersion in Fibre
  • Nonlinearities
  • Window of Operations
  • Fibre Types
  • Optical amplifiers
  • Light Sources and Transmitters
  • Photodiodes and receivers
  • Optical communication systems

Common Single Mode Fibre Types
  • Standard Single Mode Fibre
  • Dispersion Shifted Fibre (DSF)
  • Dispersion-Compensating Fibre (DCF)
  • Non-Zero Dispersion Shifted Fibre (NZ-DSF)
  • Positive Dispersion SMF

Introduction to DWDM
  • Optical Networking and DWDM
  • Optical Network Breakthroughs
  • Special Fibres
  • S, C, and L Bands
  • Optical Components
  • Optical Spectral Filters and Gratings
  • Optical Demultiplexers
  • Erbium-Doped Fibre Amplifier (EDFA)
  • Tunable Laser Diodes
  • In-Fibre Bragg Grating
  • Light Sources
  • Optical Cross-Connects
  • Optical Add-Drop Multiplexers
  • DWDM and SDH

DWDM Components and Architecture
  • DWDM Anatomy
  • DWDM Impairments
  • Multiwavelength Transmitters
  • Multichannel Receivers
  • DWDM Optical Amplifiers
  • Wavelength Convertors
  • Modal Effects
  • Scattering Effects

DWDM Impairments
  • Spectrum
  • Availability, Occupancy, efficiency
  • Bandwidth & Distance Limitations
  • Noise, Dispersion, Non-linearities
  • Four-Wave Mixing (FWM)
  • Cross-phase Modulation (XPM)
  • Stimulated Brillouin Scattering (SBS)
  • Stimulated Raman Scattering (SRS)
  • Chromatic Dispersion (CD)
  • Polarization Mode Dispersion (PMD)
  • Amplified Spontaneous Emission (ASE)
  • Modeling of Nonlinearities
  • Noise-like penalties
  • Optical Power Damage Threshold
  • Fibre
  • Components
  • Noise Sources: ASE, Shot, Thermal
  • Not-Return-to-Zero (NRZ) vs Return-to-Zero (RZ) Transmission
  • Dispersion and PMD Compensation
  • Effects of Optical Crosstalk

Analysis of Optical Components
  • Parameters common to all optical components
  • Optical Filters
  • Optical Couplers
  • Optical Power Attenuators
  • Polarizer and Rotators
  • Beam Splitters
  • Optical Isolators and Circulators
  • Optical Multiplexers and Demultiplexers
  • Optical Cross Connects (OCXs)
  • Optical Add Drop Multiplexers
  • Optical Equalizers
  • Light Sources
  • Laser Beams
  • Modulators
  • Photodetectors and Receivers
  • Optical Amplifiers
  • Wavelength Convertors
  • Optical Phase-Locked Loops
  • Ring Resonators
  • Optical Attenuators
  • Optical SNR

EDFA Details
  • Advantages
  • EDFA Disadvantages
  • Limited to C and L bands
  • Pump Laser
  • Erbium Doped Fibre
  • Wavelength Selective Coupler
  • Isolator
  • Comparison between EDFE, Raman Amplifier, and SOAs

Networking with DWDM
  • Optical Systems and Components Analysis
  • Optical Transmitters: Lasers
  • Modulation: direct and External
  • Optical Receivers: Photodectectors
  • Couplers and Circulators
  • Transponders
  • Optical Switches
  • Mechanical Switches
  • Acousto-Optical Switches
  • Micro-Mechanical Switches (MEMS)
  • Electro-Optical and Thermo-Optical Switches
  • Buble Technology
  • Liquid Crystal Switches
  • Hologram-based Switches
  • Factors that affect System Design
  • Effect of Chromatic Dispersion
  • Q-Factor and OSNR
  • What is the Q-factor?
  • Methods to determine the Q-factor
  • Asynchronous sampling (voltage histogram)
  • Synchronous sampling (digital sampling scope)
  • Q-factor applications
  • Installation of optical networks
  • System optimization
  • System monitoring
  • Calculation of Q-factor from OSNR
  • Margin Requirements
  • Design using Chromatic Dispersion Compensation
  • OSNR and Dispersion-Based Design
  • Effects of FWM and XPM on Long-Haul Design
  • PMD in Long-Haul Design
  • Forward Error Correction (FEC)

DWDM Span Engineering
  • Engineering a DWDM Link
  • Power Budget Design
  • What are the factors?
  • Digital Modulation Formats
  • Fibre Impairments
  • Loss
  • Dispersion
  • Nonlinear Effects (SPM, XPM, FWM, Raman)
  • Polarization Dependent Effects (PDL and PMD)
  • Noise Sources and Noise Accumulation
  • Bit Error Rate and Signal-to-Noise-Ratio
  • Signal Crosstalk
  • DWDM Systems Design Amplifier Power
  • Amplifier spacing
  • Fibre Types
  • Channel count and bit rate
  • Channel Bit Rate
  • Dispersion and Polarization
  • Non-linear effects
  • Simulation and testing

DWDM Testing, Measurements, and OAM&P
  • Test and Measuring Devices
  • Characterization of a DWDM Mux and Demux
  • Characterization of a DWDM OADM

Optical Networking: Overview
  • What is an all-optical network?
  • Will optical networks mean the end of the existing telecom
    structure?

Optical Networking: Photonic Networks
  • First-Generation Optical Networks
  • Second-Generation Optical Networks
  • Wavelength Routing Networks
  • Optical Core Network Technology Trends

Optical Networking:
  • All-Optical Network Architecture and Design
  • Control and Management
  • Configuration, Fault and Performance Management
  • Protection Concepts, Deployment Considerations
  • IP, ATM, DWDM, and the Future of SONET/SDH

Metro and Access Networks and Technologies
  • Fiber-to-the-Premises/Curb/Home
  • Carrier Ethernet
  • Passive Optical Network (PON) / Ethernet PON
  • Metro DWDM
  • Metro OTN