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 441
Gerd Keiser. 8 Noise figure ( dB ) 7 6 5 Gain Counterpumped noise figure Copumped noise figure -28 -24 -20 -16 - 12 -8 Input power ( dBm ) 24 20 20 16 Gain ( dB ) FIGURE 11-10 Measured EDFA noise figure under gain saturation for ...
Gerd Keiser. 8 Noise figure ( dB ) 7 6 5 Gain Counterpumped noise figure Copumped noise figure -28 -24 -20 -16 - 12 -8 Input power ( dBm ) 24 20 20 16 Gain ( dB ) FIGURE 11-10 Measured EDFA noise figure under gain saturation for ...
Page 560
... Figure 13-25 shows a trace of a typical DFB laser . 13.7.2 EDFA Gain and Noise - Figure Testing The amplifier gain and noise figure are the two most important parameters of optical amplifiers when applying them in an optical ...
... Figure 13-25 shows a trace of a typical DFB laser . 13.7.2 EDFA Gain and Noise - Figure Testing The amplifier gain and noise figure are the two most important parameters of optical amplifiers when applying them in an optical ...
Page 561
... FIGURE 13-25 Spectrum of a DFB laser diode as recorded by an HP - 71450 optical spectrum analyzer . The DFM laser measurements shown on the display include center wavelength , side - mode suppression ratios , peak power , and stop ...
... FIGURE 13-25 Spectrum of a DFB laser diode as recorded by an HP - 71450 optical spectrum analyzer . The DFM laser measurements shown on the display include center wavelength , side - mode suppression ratios , peak power , and stop ...
Contents
Overview of Optical Fiber Communications | 1 |
Structures Waveguiding and Fabrication | 25 |
Structures Waveguiding and Fabrication | 26 |
Copyright | |
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analog attenuation avalanche photodiode band bandwidth cable carrier channel cladding communication components connector core coupler coupling data rate dB/km density detector device dispersion EDFA effects electric emission emitting energy equation example factor fiber end fiber optic FIGURE frequency function gain given by Eq glass graded-index fiber IEEE InGaAs input laser diode lasing layer length Lett light Lightwave Tech loss material Mb/s modal modal noise modes modulation multimode fibers multiplexing n₁ node numerical aperture operating optical amplifiers optical fiber optical output optical power optical signal optical source output power parameter percent photodetector photon pin photodiode power level propagation pulse quantum efficiency Quantum Electron radius range receiver refractive index region semiconductor shown in Fig signal-to-noise ratio single-mode fibers spectral width splice star coupler step-index fiber temperature transmission transmitted values voltage wave wavelength