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 56
... radius of curvature decreases , the loss increases exponentially until at a certain critical radius the curvature loss becomes observable . If the bend radius is made a bit smaller once this threshold point has been reached , the losses ...
... radius of curvature decreases , the loss increases exponentially until at a certain critical radius the curvature loss becomes observable . If the bend radius is made a bit smaller once this threshold point has been reached , the losses ...
Page 57
... radius of curvature of the fiber axis . n2 is the cladding refractive index , k = 2π / A is the wave propagation constant , and α No = ( n , ka ) A a + 2 ( 3-8 ) is the total number of modes in a straight fiber [ see Eq . ( 2-79 ) ...
... radius of curvature of the fiber axis . n2 is the cladding refractive index , k = 2π / A is the wave propagation constant , and α No = ( n , ka ) A a + 2 ( 3-8 ) is the total number of modes in a straight fiber [ see Eq . ( 2-79 ) ...
Page 126
... radius of curva- ture , and concave surfaces have a negative radius . With the use of these conventions we shall now find the focal point for the right - hand surface of the lens shown in Fig . 5-6 . To find the focal point , we set q ...
... radius of curva- ture , and concave surfaces have a negative radius . With the use of these conventions we shall now find the focal point for the right - hand surface of the lens shown in Fig . 5-6 . To find the focal point , we set q ...
Contents
Structures and Waveguiding | 12 |
Signal Degradation in Optical Fibers | 48 |
Optical Sources | 80 |
Copyright | |
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absorption amplifier angle Appl 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 n₁ n₂ 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 single-mode spectral width splice star coupler step-index fiber surface T-coupler technique temperature thermal noise transmitter values voltage wave wavelength