Fiber Optic Essentials
Casimer DeCusatis
Language: English
Pages: 288
ISBN: B0014EMOQO
Format: PDF / Kindle (mobi) / ePub
This book is a MUST for everyone in and around the optics community!
Fiber Optic Essentials provides professionals and students new to the field of fiber optics with a high-level knowledge of principles, theories and applications. This primer can also be used as a succinct overview of optics for those with some engineering and physics background. Individuals involved with optics in non-traditional capacities such as in marketing and legal departments will find this volume introduces basic concepts completely in an easy to read format.
Casimer and Carolyn DeCusatis have provided a concise resource with compact chapters and minimal equations conveying this complex topic in a straightforward and clear-cut style. Included in this book are chapters on fibers, cables, connectors, transmitters, modulators, noise, and optical link design. Concluding this reference are three indispensable appendices covering extensive definitions, acronyms (including initials and commonly used slang), measurement conversions and physical constants. This author team has produced a book that has truly shed light on this difficult subject.
* Comprehensively covers basic fiber optic ‘facts'
* Explains how optics relate to everyday life
* Details fiber optic communication standards
* Chapter included on medical applications
* Timeline traces the history of optics with major milestones
work together. All types of fiber optic systems require a light source; for applications such as medical imaging or architectural lighting, this source can be any type of conventional light bulb. The optical fiber serves as a light guide in this case; its purpose is simply to convey light from the source to a desired destination. In optical communications systems, the source of light used is called a transmitter. There are several different types of transmitters, including light emitting diodes
magnitude. This lack of sensitivity is because there are fewer short wavelength photons per watt, so responsivity in terms of power drops off, and because more energetic blue photons may not be absorbed in the junction region. For color-sensitive applications such as photometry, filters are used so detectors will respond photometrically, or to the standardized CIE color coordinates; however, the lack of overall sensitivity in the blue region can potentially create noise problems when measuring a
support TDM for selected telecommunications protocols such as SONET; in fact, this telecom protocol is designed to function in a TDM-only network, and can easily be concatenated at successively faster data rates. The basic data rates and notation associated with SONET networks are shown in Table 6.2. Note that the original unit used in multiplexing voice traffic is 64 kbps, which represents one phone call. Within North America, 24 of these units are TDM multiplexed into a signal with an aggregate
world applications, it is not sufficient to simply extend a physical connection; performance of the attached datacom equipment must also be considered. Latency, or propagation delay due to extended distances, remains a formidable problem for optical data communication. The effects of latency are often protocol specific or device specific. For example, using DWDM technology it is possible to extend an ESCON channel to well over 50 km. However, many ESCON control units and DASD are synchronous, and
laser safety. The lasers then transmits low duty cycle optical pulses until the link is reestablished; a handshake sequence then automatically reactivates the transmitters. 7.5 ATM/SONET Developed by the ATM Forum, this protocol has promised to provide a common transport media for voice, data, video, and other types of multimedia. ATM is a high level protocol which can run over many different 7. Fiber Optic Communication Standards 159 physical layers including copper; part of ATM’s promise