"Introduction". In: Fiber-Optic Communication Systems
202 CHAPTER 5. LIGHTWAVE SYSTEMS contrasted with the TAT–8 capacity of 8000 channels in 1988, which in turn should be compared t ...
5.4. SOURCES OF POWER PENALTY 203 Figure 5.6: Modal-noise power penalty versus mode-selective loss. The parameterMis defined as ...
204 CHAPTER 5. LIGHTWAVE SYSTEMS 5.4.2 Dispersive Pulse Broadening The use of single-mode fibers for lightwave systems nearly av ...
5.4. SOURCES OF POWER PENALTY 205 Figure 5.7: Dispersion-induced power penalty for a Gaussian pulse as a function ofBLDσλ. Sourc ...
206 CHAPTER 5. LIGHTWAVE SYSTEMS In the case of multimode semiconductor lasers, the power penalty can be calculated by following ...
5.4. SOURCES OF POWER PENALTY 207 Figure 5.8: MPN-induced Power penalty versusBLDσλfor a multimode semiconductor laser of RMS sp ...
208 CHAPTER 5. LIGHTWAVE SYSTEMS power. Furthermore, the two modes are anticorrelated in such a way that the main- mode power dr ...
5.4. SOURCES OF POWER PENALTY 209 Figure 5.9: Effect of MPN on bit-error rate of DFB lasers for several values of MSR. Intersect ...
210 CHAPTER 5. LIGHTWAVE SYSTEMS Figure 5.10: Chirp-induced power penalty as a function ofBLD∆λcfor several values of the parame ...
5.4. SOURCES OF POWER PENALTY 211 Figure 5.11: Chirp-induced power penalty as a function of|β 2 |B^2 Lfor several values of the ...
212 CHAPTER 5. LIGHTWAVE SYSTEMS Figure 5.12: Power penalty as a function of the extinction ratio. (After Ref. [105];©c 1987 IEE ...
5.4. SOURCES OF POWER PENALTY 213 below 2 dB by operating the system with an extinction ratio of about 0.1. The optimum values o ...
214 CHAPTER 5. LIGHTWAVE SYSTEMS Most reflections in a fiber link originate at glass–air interfaces whose reflectivity can be es ...
5.4. SOURCES OF POWER PENALTY 215 Figure 5.13: Experimentally measured BER at 500 Mb/s for a VCSEL under optical feedback. The B ...
216 CHAPTER 5. LIGHTWAVE SYSTEMS Figure 5.14: Feedback-induced power penalty as a function of MSR for several values ofNand rI= ...
5.5. COMPUTER-AIDED DESIGN 217 Figure 5.15: Steps involved in computer modeling of fiber-optic communication systems. reflectivi ...
218 CHAPTER 5. LIGHTWAVE SYSTEMS Each step in the block diagram shown in Fig. 5.15 can be carried out numerically by using the m ...
PROBLEMS 219 Problems 5.1 A distribution network uses an optical bus to distribute the signal to 10 users. Each optical tap coup ...
220 CHAPTER 5. LIGHTWAVE SYSTEMS 5.10A 1.3-μm lightwave system is designed to operate at 1.7 Gb/s with a repeater spacing of 45 ...
REFERENCES 221 [6] R. Ramaswami and K. Sivarajan,Optical Networks: A Practical Perspective, 2nd ed., Morgan Kaufmann Publishers, ...
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