DWDM – Introduction
			
	
	
	
	
		
- Introduction to Optical Technologies
-  An overview of the transport technologies
- Optical technologies:  Their advantages and disadvantages
 
- The T-Carrier System
- Framing
- Synchronization
- Extended super frame
- Capacity overview
 
- Review of SONET/SDH
- Framing
- Overhead
- SONET structures
- SONET carrier system
- SONET synchronization
- Concatenation
- BLSR
 
- WDM Technologies
- History of WDM
- Evolution of DWDM
- Drivers of DWDM
- Drivers of CWDM
- Overview and comparison of DWDM and CWDM
- Overview of a functioning DWDM system
- Signal generation
- Combiners/Mixers
- Transmitters
- Receivers
 
- How optical fiber works
- Refraction
- Reflection
- Cladding
- Core
- Overview of multimode fiber
- Overview of single-mode fiber
- Step index
 
 
- Functional Descriptors:  DWDM
- Standards and definitions
- Channel spacing
- Multiplexers
- Optical multiplexers
- Add/drop multiplexers
- Wave division multiplexing
- Signal regeneration
 
- Functional Descriptors:  CWDM
- ITU standard definition
- Channel spacing
- Applicability and use
 
- Dense WDM
- ITU standard definition
- Channel spacing
- Wavelengths
- EDFA
- DWDM terminal multiplexer
- Add drop multiplexer in DWDM
- DWDM terminal duplexer
- Optical supervisory channel
 
- DWDM Systems
- Typical laser design:  An overview
- ITU Grid G.692
- Transponders
- Re-transmission – 1R
- Re-time and re-transmit – 2R
- Re-time, re-transmit and re-clock – 3R
- Multiplexed transponders
 
- Transmitters
- Attenuation
- Chromatic dispersion
- Nonlinearities
 
- Optical amplifiers
- Optical receivers
- OADMs
- Roadm (reconfigurable add/drop multiplexer) technology
- DWDM in single-mode fiber systems
- DWDM in multimode fiber systems
 
- DWDM Applications
- Long distance
- Long haul
- Self healing rings
- Diversity
- Network expansion
 
- Course Wrap-up
- Future evolution of optical technologies
- Directions for advanced study
-  Course recap, Q/A, and evaluations