Nex-G Innovations

Dense Wavelength Division Multiplexing (DWDM) training aims to provide comprehensive knowledge and practical skills in understanding, designing, implementing, and managing DWDM systems. Participants will learn about the fundamental principles of DWDM technology, its components, and architecture, including transponders, multiplexers, demultiplexers, optical amplifiers, and wavelength routers. The training covers network design and planning, installation, configuration, network management, and troubleshooting. Advanced topics such as dynamic wavelength assignment and reconfigurable optical add-drop multiplexers (ROADMs) are explored, alongside industry standards, best practices, and case studies. Additionally, the training keeps participants informed about emerging trends and future directions in DWDM technology.

Code: NES_SK_1302

Duration: 40 Hrs / 1 month / Customized

Mode: Corporate (Instructor Led - Online / Offline / Onsite), Individual (Instructor Led - Online / Offline)

+91-8826900551

• DWDM Anatomy
• DWDM Impairments
• Multiwavelength Transmitters
• Multichannel Receivers
• DWDM Optical Amplifiers
• Wavelength Converters
• Modal Effects
• Scattering Effects
• Miscellaneous 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
• Illustrations with System Examples
• Optical Power Damage Threshold
• Fiber
• Components
• Noise Sources: ASE, Shot, Thermal, etc.
• Not-Return-to-Zero (NRZ) vs. Return-to-Zero (RZ) Transmission
• Dispersion and PMD Compensation
• The 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 Fiber
• Wavelength Selective Coupler
• Isolator
• A Comparison between EDFE, Raman Amplifier and SOAs

Networking with DWDM

• Optical Systems and Components Analysis
• Optical Transmitters: Lasers
• Modulation: Direct and External
• Optical Receivers: Photodetecters
• Couplers and Circulators
• Cavities and Filter
• Complex Components: Transponders
• Optical Switches
• Mechanical Switches
• Acousto-Optical Switches
• Micro-mechanical switches (MEMS)
• 2D MEMS (Bar State)
• 3D MEMS Switch Operation
• Electro-Optical and Thermo-Optical Switches
• Bubble 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)
• Synchronous sampling method (single decision threshold method)
• Synchronous sampling method (dual decision threshold method)
• Q-factor applications
• System test during manufacturing
• Installation of optical networks
• System optimization
• Maintenance and troubleshooting
• 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
• Fiber 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
• Fiber 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
• EDFA Testing
• Optical Waveform Analysis
• Complete DWDM End-to-End
• Component conformance tests
• Parameter tests on optical fibers
• System installation tests
• System optimization tests
• System acceptance tests