Broadband Circuits for Optical Fiber Communication phần 4 potx

... 144 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 ... value 10 mV 0.01 16 - 14. 07 .3 kQ .380nA = 34. 6dB. A? And for a typical lO-Gb/s system (RT = 1 kC2, iimhA = 1 ,40 0nA) we get lOmV 0.0116. 14. 07. 1 kQ.l ,40 0nA =...

Ngày tải lên: 14/08/2014, 09:21

... .72 (6 .40 ) (6 .41 ) In conclusion, the low-frequency cutoff for a SONET system should be about 40 ,000~ lower than the bit rate (fLF < B /40 ,000). It the case of a Gigabit Ethernet or Fiber ... maxi- mum input signal for which the MA performs a useful function, for example, for which the BER is sufficiently low. The minimum input signal (lower end of the dynamic 1 74...

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... OPTICAL TRANSMI7TERS quantified by the extinction ratio (ER), which is defined as follows2: p1 ER= , PO (7 .4) where PO is the optical power emitted for a zero and P1 the power for ... 6 .43 drops with increasing input voltage, that of the stage in Fig. 6 .44 increases. Whereas the bandwidth of the stage in Fig. 6 .43 shrinks with decreasing gain, that of the stage in...

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... S76803 48 .0 7 7.0 (d) SiGe HBT Velocium AUH232 43 .0 8 8.0 (s) 1,250 GaAs HFET 316 EYE DIAGRAMS + 1015P &PV1 1185P &PV1 + 241 15P &PV1 243 85P &PV1 + 244 15P &PVO 245 85P ... implement analog high-speed circuits for optical communication in the same CMOS technology that is used for VLSI chips. With this approach, the analog front-end circui...

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... designer the best of both worlds; for example, the BJTs can be used for high-speed analog circuits, and the MOSFETs can be used for the digital CMOS logic. D .4 HETEROJUNCTION BIPOLAR TRANSISTOR ... = 4 /(u$ + uiy). With 6 = uLy/uF[, we can rewrite Eq. (4. 10) as Q2 = ($p)2/[(Lj + 1)2 . un.1 ] and Eq. (4. 11) as SNR = (4 )’/[2. (6’ + 1) .?,,I. T...

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... CONTENTS 4 Receiver Fundamentals 4. 1 Receiver Model 4. 2 Bit-Error Rate 4. 3 Sensitivity 4. 4 Personick Integrals 4. 5 Power Penalty 4. 6 Bandwidth 4. 7 Adaptive Equalizer 4. 8 Nonlinearity 4. 9 ... overview of circuits for optical communi- cation, including phase-locked loops and clock and data recovery circuits [ 141 1. The latest developments in integrated circu...

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... BW,, + a213 ' BWn32. where (4. 43) (4. 44) (4. 45) P-I-N DETECTOR WITH OPTICAL PREAMPLIFIER 39 Fig. 3.70 Definition of the noise figure for an optical amplifier. in terms of the ... with Eq. (4. 43), the second and third Personick integrals can be identified as (4. 48) (4. 49) In other words, the Personick integrals 12 and I3 are normalized noise band...

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... 2.5 x to 1 .44 ~. Soon this amplifier will be a unity-gain buffer! Now you have 2. 1 .44 6.28 .50 Q * 0.3 pF = 30.6GHz fA 2 (5.33) and A . fA = 1 .44 .30.6 GHz = 44 GHz. Fine, ... the TIA bandwidth now? (5. 34) Hurray, you’ve got it! Tomorrow, you’ll be the 40 -Gig Hero.” But before leaving work, you quickly check the transimpedance: 1 .44 1 .44 + 1 RT= 50 5...

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... nonlinear leakage currents), or to permit higher optical output power levels, or both. Optical Feedforward Linearization. Optical feedforward linearization capitalizes on the fact that ... wavelengths, chromatic dispersion in the fiber desynchronizes the signals resulting in larger distor- tions for longer fibers. In general, the optical feedforward system is quite comp...

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... Circuits, SC- 24( 6): 1 744 -1 748 , December 1989. 145 . H M.Rein. Si and SiGebipolarICsfor 10 to40Gb/soptical-fiberTDMlinks. In Keh-Chung Wang, editor, High-speed Circuits for Lightwave Communications, ... Non-Return-to-Zero INDEX 43 3 Optical feedforward linearization, 292 Optical fiber, 11, 13- 14 Optical filter, 35-36 Optical in-line amplifier, l3,62,256 O...

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