Optical Fiber CommunicationsThe third edition of this popular text and reference book presents the fundamental principles for understanding and applying optical fiber technology to sophisticated modern telecommunication systems.. Optical-fiber-based telecommunication networks have become a major information-transmission-system, with high capacity links encircling the globe in both terrestrial and undersea installations. Numerous passive and active optical devices within these links perform complex transmission and networking functions in the optical domain, such as signal amplification, restoration, routing, and switching. Along with the need to understand the functions of these devices comes the necessity to measure both component and network performance, and to model and stimulate the complex behavior of reliable high-capacity networks. |
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Page 225
... T - coupler bus , 40-46 shown in Fig . 8-12 . Access to an optical data bus is achieved by means of a coupling element which can be either active or passive . An active coupler converts the optical signal on the data bus to its electric ...
... T - coupler bus , 40-46 shown in Fig . 8-12 . Access to an optical data bus is achieved by means of a coupling element which can be either active or passive . An active coupler converts the optical signal on the data bus to its electric ...
Page 228
... T - coupler are shown schematically in Fig . 8-15 . The coupler generally has four ports ; two for connecting the device onto the fiber bus , one for receiving tapped - off data , and one for inserting data onto the line . We shall ...
... T - coupler are shown schematically in Fig . 8-15 . The coupler generally has four ports ; two for connecting the device onto the fiber bus , one for receiving tapped - off data , and one for inserting data onto the line . We shall ...
Page 229
... T - coupler . If the fraction of power lost in the coupler is F , then the intrinsic transmission loss L , is Lu = -10 - ā 10 log ( 1 ā F1 ) dB ( 8-28 ) Generally , an in - line data bus will consist of a number of stations separated ...
... T - coupler . If the fraction of power lost in the coupler is F , then the intrinsic transmission loss L , is Lu = -10 - ā 10 log ( 1 ā F1 ) dB ( 8-28 ) Generally , an in - line data bus will consist of a number of stations separated ...
Contents
Structures and Waveguiding | 12 |
Signal Degradation in Optical Fibers | 48 |
Optical Sources | 80 |
Copyright | |
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absorption amplifier angle attenuation avalanche photodiode band gap bandwidth Bell Sys bias cable carrier Chap cladding coefficient communication systems components connector coupler coupling coupling loss data rate dB/km decibels density detector device distortion electric electromagnetic emission emitting energy equation fiber core fiber end fiber optic Figure frequency function given by Eq glass fibers graded-index fiber IEEE Trans input laser diodes layer Lett lifetime light source loss material dispersion measured method modal modulation multimode fibers nā nā numerical aperture operating optical output optical power optical signal optical source optical waveguide output power parameter percent photodetector photon pin photodiode preform propagation quantum efficiency radiation radius ratio receiver recombination refractive index refractive-index refractive-index profile semiconductor shown in Fig silica silicon single-mode spectral width splice star coupler step-index fiber surface T-coupler technique temperature thermal noise transmitter values voltage wave wavelength