Broadband Circuits for Optical Fiber Communication phần 6 potx

... (b) Fig. 6. 53 Circuits for Problems 6. 7 and 6. 8: (a) stage with series feedback and (b) regu- lated cascode. 6. 5 6. 6 6. 7 6. 8 (GBWs). How large is the ratio of the GBW for the total ... the NRZ signal to an RZ signal in the optical domain. 233 2 56 OPTICAL TRANSMITTERS For example, given a fiber attenuation of 0.25 dB/km, typical for an SMF operated...

Ngày tải lên: 14/08/2014, 09:21

... TRANSIMPEDANCE AMPLIFIERS Fig. 5. 26 Receivers for analog signals: (a) low-impedance front-end and (b) front-end with matching transformer. matching transformer [14]. The transformer with a 4:l turns ... level. MA SPECINCATIONS 165 bandwidth of 0.6B to 0.7B: 2.5 Gb/s MA: 10 Gb/s MA: BW~~B = 2.5 GHz . . .3 GHz, Bw’jd~ = 10 GHz . . . 12 GHz. (6. 8) (6. 9...

Ngày tải lên: 14/08/2014, 09:21

... Section 6. 2.5, the drift voltage causes the power penalty 2 VDRIFT PP=l+ v? Inserting the approximation for VDRI~ in Eq. (6. 36) into Eq. (6. 37) yields (6. 37) (6. 38) Solving Eq. (6. 38) for ... figure using Eq. (6. 15): (6. 19) Combining Eqs. (6. 18) and (6. 19), we find the power penalty due to the MA noise to be (F - 1) . V,.s (6. 20) Solving this equation...

Ngày tải lên: 14/08/2014, 09:21

... OQ2545HP 2.5 90 2.5 100 2.5 2.5 90 2.5 150 2.5 120 65 85 60 60 80 60 40 520 GaAs HFET 60 730 GaAs HFET 60 1.5 165 Si BJT 100 2.0 205 100 I .4 350 Si BJT 1 00 3.0 ... S,',, . Table 8.1 Examples for high-speed laser driver prOdUCtS. Company & Product Agere LG 162 5AXF Agere LG 162 7BXC Infineon S896A0 06 Maxim MAX3 867 Nortel YAO8 P...

Ngày tải lên: 14/08/2014, 09:21

... with - - - 374 ANSWERS TO THE PROBLEMS where 6. 7(b) 6. 7(c) 6. 7(d) 6. 8(a) 6. 8(b) 6. 8(c) 6. 8(d) 6. 9(a) Setting wz = wp2 for a single-pole response leads to the condition Cs ... lightly doped. The reason for this effect is illustrated with the band diagram for a forward-biased emitter-base heterojunction in Fig. D .6. The potential barrier for electrons go...

Ngày tải lên: 14/08/2014, 09:21

... 259 259 259 261 261 263 264 265 265 267 268 268 2 73 2 76 2 79 280 282 285 2 86 287 290 294 294 297 302 305 305 308 309 313 32 I 322 324 325 26 PHOTODETECTORS ... overview of circuits for optical communi- cation, including phase-locked loops and clock and data recovery circuits [ 1411. The latest developments in integrated circu...

Ngày tải lên: 14/08/2014, 09:21

... into the fiber link to boost the optical signal. For example, let’s assume an 8,000-km long fiber link connecting two continents. To compensate the fiber loss of 0.25dB/km, we insert an optical ... voltage swing is proportional to the received optical power, the power penalty for a decision-threshold offset 6 becomes PP= 1 + 26. (4.52) For example, a 10% decision-t...

Ngày tải lên: 14/08/2014, 09:21

... amplified optically (e.g., with an erbium-doped fiber amplifier [EDFA]) to a fairly high power level and then is detected with a passive low-impedance front-end. For example, given an amplified optical ... overload current is i$ = 1 .6 mA peak-to-peak. 5.1.3 Maximum Input Current for Linear Operation Another specification for the input signal is the maximum input curren...

Ngày tải lên: 14/08/2014, 09:21

... nonlinear leakage currents), or to permit higher optical output power levels, or both. Optical Feedforward Linearization. Optical feedforward linearization capitalizes on the fact that ... main signal from TXl to avoid coherent interference. fig, 8. 26 Principle of optical feedforward linearization. Optical feedforward linearization has the advantage that it can compensate...

Ngày tải lên: 14/08/2014, 09:21

... Optical feedforward linearization, 292 Optical fiber, 11, 13-14 Optical filter, 35- 36 Optical in-line amplifier, l3 ,62 ,2 56 Optical isolator, 35 Optical modulation amplitude, 237 Optical ... FFE, see feed-forward equalizer Fiber attenuation, 11,253 Fiber bandwidth, 13.21 Fiber Channel, 6. 174 Fiber distributed data interface, 3 ,6- 7 Fiber loss, 11,253...

Ngày tải lên: 14/08/2014, 09:21