Table of Contents:
00:00 Lecture 9: Wavelength Division Multiplexing
00:50 Recap: Multiplexing schemes
02:08 Wavelength Division Multiplexing
03:24 Bandwidth
04:48 Channel Spacing
06:20 Amplification Bandwidth
08:18 Outline
08:24 DWDM Hardware
09:18 Tunable optical filters
15:32 Multiplexers & demultiplexers
17:00 Add-drop multiplexers
17:57 Star couplers
19:20 Wavelength routers
21:41 Optical cross-connects
22:26 Wavelength converters
25:10 WDM Transmitters
30:02 WDM Receivers
32:38 Outline
32:56 Optical Transport Network (OTN)
33:49 Synchronous optical networking (SONET)
35:25 Synchronous optical networking (SONET) topology
36:22 Synchronous transport signal 1 (STS-1) frame
37:06 OTNs vs. SONET
38:40 OTN+SONET Example: Internet2
40:49 General Relation to TCP/IP
41:41 Hybrid Packet/Optical Network Architecture

This video is part of the course Fiber Optic Communication by Peter Bermel at Purdue University. The course can be found on nanoHUB.org at https://nanohub.org/resources/29411 where other downloads are available.

This course is an introduction to the fundamentals of fiber optic communications, which constitute the backbone of the internet. The course will start with a refresher on the operation of key components needed for an effective fiber optic communication system, and then show how these components interact at a system level. Finally, the course will conclude with outlook for future research in extending the capabilities of these networks to higher bandwidths and quantum-secured communications.

This course is part of a Purdue University initiative that aims to complement the expertise that students develop with the breadth at the edges (https://engineering.purdue.edu/ECE/Ac...) needed to work effectively in today's multidisciplinary environment. These serious, short courses require few prerequisites and provide a general framework that can be filled in with self-study when needed.