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 162
... factor becomes smaller . If only electrons cause ionization , B = 0 and F reaches its lower limit of 2 . This shows that , to keep the excess noise factor at a minimum , it is desirable to have small values of keff . Referring back to ...
... factor becomes smaller . If only electrons cause ionization , B = 0 and F reaches its lower limit of 2 . This shows that , to keep the excess noise factor at a minimum , it is desirable to have small values of keff . Referring back to ...
Page 163
Gerd Keiser. Excess noise factor 102 10 wwwww لس k = 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 10 102 Gain 103 Figure 6-14 Variation of the electron excess noise factor F , as a function of the electron gain for various values of the effective ...
Gerd Keiser. Excess noise factor 102 10 wwwww لس k = 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 10 102 Gain 103 Figure 6-14 Variation of the electron excess noise factor F , as a function of the electron gain for various values of the effective ...
Page 167
... factor is introduced which is not present in a pin photodiode . A measure of this noise increase is given by the excess noise factor , which we described in Sec . 6-4 . This noise factor depends on the electron and hole ionization rates ...
... factor is introduced which is not present in a pin photodiode . A measure of this noise increase is given by the excess noise factor , which we described in Sec . 6-4 . This noise factor depends on the electron and hole ionization rates ...
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