This course is part of our eLearning Archive, which includes older courses that may not be current or as user-friendly as courses designed more recently. As point-to-point links become more sophisticated, single-channel and WDM systems must dynamically adapt to changing environmental and traffic conditions in order to avoid SNR degradation. This scenario erupts into a much greater challenge when channels originate at different locations, as is the case with add/drop multiplexers, reconfigurable cross-connects, circuit-switched networking, and eventually optical packet switching. This course is intended for people interested in non-static and reconfigurable WDM systems and networks.
This course is part of our eLearning Archive, which includes older courses that may not be current or as user-friendly as courses designed more recently. This course provides an introductory, course-type overview of key optoelectronic devices for optical communication systems, specifically, semiconductor lasers, photodetectors, optical modulators, and some WDM components. The course covers a broad range of devices with an emphasis on fundamental device physics and operating principles. Important performance parameters including design trade-offs will also be discussed. The laser section will discuss applications and the types of lasers that are utilized for specific systems. Topics include multiple quantum well lasers, distributed feedback lasers, wavelength tunable lasers and vertical cavity surface emitting lasers. Photodetector topics will cover wide-bandwidth PINs and avalanche photodiodes as well as receivers with optical preamplification. State-of-the-art integrated receiver circuits will also be discussed. In the modulator section Mach-Zehnder interferometers, and quantum-confined-Stark-effect devices will be covered. There will be a brief description of recent developments in optical switching using MEMs technology.
This course is part of our eLearning Archive, which includes older courses that may not be current or as user-friendly as courses designed more recently. In this course we will begin with a review of cable specifications which includes a discussion of physical size issues and environmental and grounding issues. You will also learn about the preparation of loose and tight buffered cables. This is followed by a review of OPGW cables and the unique disciplines, tools, processes and attachment hardware for OPGW preparation. Finally, ADSS cable will be discussed including applications and specialized hardware for ADSS installations. After completing this course you should have an understanding of: Cable specifications; Loose buffered cable preparation; Tight buffered cable preparation; OPGW cables; OPGW preparation; and ADSS cables.
This course is part of our eLearning Archive, which includes older courses that may not be current or as user-friendly as courses designed more recently. Charles Kao, the father of fiber-optic communications, was recently awarded a share of the Nobel prize for his work in physics. On October 16th, 2001, Larry Johnson had the opportunity to film an interview with Dr. Kao at the Stanford Park Hotel in Palo Alto, California.