Broadband Circuits for Optical Fiber Communication phần 8 potx

... 43.0 8 8. 0 (s) 1,250 GaAs HFET 316 EYE DIAGRAMS + 1015P &PV1 1 185 P &PV1 + 24115P &PV1 24 385 P &PV1 + 24415P &PVO 24 585 P &PVO + 24615P &PV1 2 488 5P &PV1 ... for Problem 8. 9. Temperature Slope Efficiency Threshold Current (“C) (mW/mA) (mA) -40 20 80 0. 08 0.07 0.05 2 10 35 8. 10 Automatic Bias Control for MZMs. In an...

Ngày tải lên: 14/08/2014, 09:21

... we find a slope of about 13.5 dl3 per decade for APD receivers and 12 dB per decade for optically preamplified p-i-n receivers. Note that for a detector-noise limited receiver with a slope ... must be transformed to find its contribution to the input-referred TIA noise current. If we neglect Rh, the transfer function for this transformation is the same as in Eq. (5. 38) ,...

Ngày tải lên: 14/08/2014, 09:21

... The gain-bandwidth extensions for these two cases also are plotted in Fig. 6.10 (for Atot = 30dB). For these cases, the GBW extension is less dramatic than for the ideal brick-wall case, ... 1.2B. For a typical 2.5-Gb/s system (RT = 3 kQ, iim&A = 380 nA), we obtain the numerical value = 17.1 dB. 4 . (3 kS2)2 . ( 380 nA)' (49.0 PV)~ FI lf0.023 (6.2...

Ngày tải lên: 14/08/2014, 09:21

... 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. 233 256 OPTICAL TRANSMITTERS For example, given a fiber attenuation of 0.25 dB/km, typical for an SMF operated at 1.55 p...

Ngày tải lên: 14/08/2014, 09:21

... ratio Camer-to-noise ratio Composite second-order distortion 381 Chapter 8 8. l(a) 8. l(b) 8. 2 8. 3(a) 8. 3(b) 8. 4 8. 5(a) 8. 5(b) The gate-source voltage of an FET as a function of the ... 2 .8. The dispersion limit increases to 588 km. The system now is limited by attenuation to a distance of 97.2 km. We don’t have to worry about PMD. For the longest fiber of...

Ngày tải lên: 14/08/2014, 09:21

... Stage 8. 2.2 Back Termination 8. 2.3 Predrive r 8. 2.4 Pulse- Width Control 8. 2.5 Data Retiming 8. 2.6 Automatic Power Control (Lasers) 8. 2.7 End-of-Life Detection (Lasers) 8. 2 .8 8. 2.9 ... Drivers) 8. 1.4 Power Dissipation 8. 1.5 Rise and Fall Times 8. 1.6 Pulse- Width Distortion 8. I. 7 Jitter Generation 8. 1 .8 Eye-Diagram Mask Test 8. 2 Driver Circuit Con...

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 ... slicer is assumed. For example, given an input-referred rms noise of 380 nA, a responsivity of 0.8A/W, and a required BER of the optical sensi- tivity is about 7.035. 380 nA/...

Ngày tải lên: 14/08/2014, 09:21

... assumed. For example, assuming the largest optical signal at the receiver is 0 dBm (e.g., given by the SONET OC- 48 intermediate reach specification [ 188 1) and a re- sponsivity of 0 .8 A/W, ... passband (without peaking) for our TIA, we must make the feedback amplifier bandwidth larger than 3 . i: L . 2 = 8. 85 GHz. 6. 28 * 600 52 .0.3 pF fA ? (5....

Ngày tải lên: 14/08/2014, 09:21

... efficiency increases, the current for zeros drops below the laser’s threshold current, as shown in Fig. 8. 18( c), resulting in PWD and jitter. [+ Problem 8. 81 Fig, 8. 77 Single-loop APC: (a) ... of Fig. 8. 12, the 20% to 80 % rise and fall times of the output pulse can easily be found as tR = tF = ln(0 .8/ 0.2) . RC = 1.39 . RC for L = 0. (8. 15) The outp...

Ngày tải lên: 14/08/2014, 09:21

... 11,253 Fiber bandwidth, 13.21 Fiber Channel, 6. 174 Fiber distributed data interface, 3,6-7 Fiber loss, 11,253 Fiber optical parametric amplifier, 13 Fiber- to-the-curb system, 8 Fiber- to-the-home ... Optical feedforward linearization, 292 Optical fiber, 11, 13-14 Optical filter, 35-36 Optical in-line amplifier, l3,62,256 Optical isolator, 35 Optical modul...

Ngày tải lên: 14/08/2014, 09:21