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Fiber Optic Basics Book
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Dense Wave Division Multiplexing - DWDMDense wave division multiplexing is a version of fiber optic communication that combines many optical channels on a single fiber, typically used to increase the data transmission capacity of previously installed fiber. Dense wave division multiplexing provides a significant increase in capacity compared to wavelength division multiplexing (WDM) that combined up to four different optical wavelengths on a single fiber. As of year 2005, DWDM systems up to 160 different wavelengths on one fiber, providing the capability of transferring over 1 trillion bits of data per second. Each optical channel (wavelength) is capable of providing approximately 10 Gb/s (OC-192 9.3 Gb/s data rate). The wavelengths on a DWDM system can be separated by as little as 0.4 nm.
Wavelength Division Multiplexing - WDM System
This diagram shows how a wave division multiplexing over fiber operates. This diagram shows that there are several lasers operating at different optical wavelengths (different colors/frequencies). Each laser converts an electrical signal into a pulsed light signal. These optical signals (optical carriers) are combined by an optical multiplexer (lens) for transmission through the optical fiber. At the receiving end, the different optical carriers are separated by an optical demultiplexer (lens) and each optical carrier is sent to a photo-detector. The photo-detector converts the optical signal back into its original electrical form.
Fiber Optic Basics Books
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Fiber Optic Basics Book
This book covers the fundamentals of fiber optic communication systems and how they are installed. It starts with the optical principles, describes optical network equipment and components, how to install optical cable, identifies the basic processes for splicing fiber and attaching optical connectors and provides an overview of optical testing. $34.99 Printed, $29.99 eBook |
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