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 119
... emitting surface being the polar axis . The radiance may be a function of both 0 and 4 , and can also vary from point to point on the emitting surface . A reasonable assumption for simplicity of analysis is to take the emission to be ...
... emitting surface being the polar axis . The radiance may be a function of both 0 and 4 , and can also vary from point to point on the emitting surface . A reasonable assumption for simplicity of analysis is to take the emission to be ...
Page 127
... Emitting area diameter ( um ) 40 50 coupling efficiency max is given by Figure 5-7 Theoretical coupling efficiency for a surface - emitting LED as a function of the emitting diameter . Coupling is to a fiber with NA = 0.20 and radius a ...
... Emitting area diameter ( um ) 40 50 coupling efficiency max is given by Figure 5-7 Theoretical coupling efficiency for a surface - emitting LED as a function of the emitting diameter . Coupling is to a fiber with NA = 0.20 and radius a ...
Page 132
... emitting fiber , whereas in area A , the numerical aperture of the receiving fiber is smaller than that of the emitting fiber . The vertical dashed line separating the two areas is the locus of points where the numerical apertures are ...
... emitting fiber , whereas in area A , the numerical aperture of the receiving fiber is smaller than that of the emitting fiber . The vertical dashed line separating the two areas is the locus of points where the numerical apertures are ...
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 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 silicon single-mode spectral width splice star coupler step-index fiber surface T-coupler technique temperature thermal noise transmitter values voltage wave wavelength