"Introduction". In: Fiber-Optic Communication Systems

362 CHAPTER 8. MULTICHANNEL SYSTEMS using individual modulators. A unique approach to WDM sources exploits the technique of spec ...

8.3. SYSTEM PERFORMANCE ISSUES 363 discuss both the linear and nonlinear crosstalk mechanisms and also consider other performanc ...

364 CHAPTER 8. MULTICHANNEL SYSTEMS Figure 8.22: Crosstalk power penalty at four different values of the BER for a FP filter of ...

8.3. SYSTEM PERFORMANCE ISSUES 365 distribution ofIXhas been calculated for a FP filter and is generally far from being Gaussian ...

366 CHAPTER 8. MULTICHANNEL SYSTEMS where r^2 X=〈(∆P)^2 〉/Pm^2 =X(N− 1 ), (8.3.8) andX=Pn/Pmis the crosstalk level defined as th ...

8.3. SYSTEM PERFORMANCE ISSUES 367 to estimate the limiting value of the channel power. A simple model considers the depletion o ...

368 CHAPTER 8. MULTICHANNEL SYSTEMS 0 20406080100 Number of Channels 0.0 1.0 2.0 3.0 4.0 5.0 Power Penalty 10 mW 5 2 1 Figure 8. ...

8.3. SYSTEM PERFORMANCE ISSUES 369 Figure 8.24: Output signal power (solid circles) and reflected SBS power (empty circles) as a ...

370 CHAPTER 8. MULTICHANNEL SYSTEMS Several schemes have been proposed for raising the Brillouin threshold [182]–[187]. They rel ...

8.3. SYSTEM PERFORMANCE ISSUES 371 Figure 8.25: XPM-induced power fluctuations on a CW probe for a 130-km link (middle) and a 32 ...

372 CHAPTER 8. MULTICHANNEL SYSTEMS pulse spectrum first toward red and then toward blue. In a lossless fiber, collisions of two ...

8.3. SYSTEM PERFORMANCE ISSUES 373 both cases, the system performance is degraded because of a loss in the channel power, but th ...

374 CHAPTER 8. MULTICHANNEL SYSTEMS zero-dispersion wavelength of the fiber was close to 1548 nm, resulting in near phase matchi ...

8.4. TIME-DIVISION MULTIPLEXING 375 the same factor unless the gain spectrum is flat over the entire bandwidth of the WDM signal ...

376 CHAPTER 8. MULTICHANNEL SYSTEMS Figure 8.26: Design of an OTDM transmitter based on optical delay lines. then combined to fo ...

8.4. TIME-DIVISION MULTIPLEXING 377 of lasers are commonly used for this purpose [219]. In one approach, gain switching or mode ...

378 CHAPTER 8. MULTICHANNEL SYSTEMS Figure 8.27: Demultiplexing schemes for OTDM signals based on (a) cascaded LiNbO 3 modu- lat ...

8.4. TIME-DIVISION MULTIPLEXING 379 a 500-Gb/s OTDM signal was demonstrated by using clock pulses of about 1 ps dura- tion [222] ...

380 CHAPTER 8. MULTICHANNEL SYSTEMS (a) (b) Figure 8.28: (a) Mach–Zehnder TOAD demultiplexer with two SOAs placed asymmetrically ...

8.5. SUBCARRIER MULTIPLEXING 381 sary to compensate for the dispersion slope (third-order dispersionβ 3 ) as 1-ps pulses were se ...