Broadband Circuits for Optical Fiber Communication phần 9 potx

... Thus, the differential input voltage that switches 0 .99 1~ to one output and 0.01Z~ to the other is VBE(O .99 fM) - VBE(O.011M) = VT(In 0 .99 - In 0.01) = 4.6V~ M 115 mV. Therateofcurrentchangeisdi/dt ... 2.l(a) f = c/A = ( 299 .8Mm/s)/(1.55pm) = 193 .4THz. 2.Nb) A f = c/h2 . Ah = ( 299 .8 R4m/s)/(1.55 pm)2 . 0.1 nm = 12.48 GHz. 2.2 The linear expres...

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 ... writing. For up-to-date product information, please contact the manufacturer directly. For TIAs with a single-ended output, the transimpedance value, tabulated under RT, is followed...

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, ... range of the MA describes the minimum and maxi- mum input signal for which the MA performs a useful function, for example, for which the BER is sufficiently low. The minimum input sig...

Ngày tải lên: 14/08/2014, 09:21

... 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 pm, a launch ... rule 10 log ER. Typically, ERs for directly modulated lasers range from 9 to 14 dB, whereas ERs for externally modulated lasers can exceed 15 dB [ 29] . SONETKDH transmitters...

Ngày tải lên: 14/08/2014, 09:21

... 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 circuits and the digital back-end ... 30 5.4 (d) 1,400 GaAs HFET Giga GD 199 01 10.0 45 6.0 (d) (3,200) GaAs HFET Giga GD 199 03 10.0 45 10.0 (d) (8,600) GaAs HFET Maxim MAX 393 5 10.0 34 3.0 (s) I...

Ngày tải lên: 14/08/2014, 09:21

... overview of circuits for optical communi- cation, including phase-locked loops and clock and data recovery circuits [ 1411. The latest developments in integrated circuits for optical communication ... Broadband circuits for optical fiber communication / Eduard Sackinger. Includes bibliographical references and index. p. cm. ISBN 0-471-71233-7 (Cloth) 1...

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 ... of each amplifier (cf. Problem 3 .9) . Substituting G‘ and F’ into Eq. (4. 29) for the sensitivity of an optically preamplified p-i-n receiver yields (4.31) For example, wit...

Ngày tải lên: 14/08/2014, 09:21

... input-referred noise). For the same design, the input-referred noise current spectrum at 100 MHz was as low as 8.8 pA/a. [+ Problem 5.21 FORWARD ERROR CORRECTION 99 Corrected Uncorrected ... 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 a...

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 ... 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...

Ngày tải lên: 14/08/2014, 09:21

... Diego, 199 7. 59. Ivan P. Kaminow and Thomas L. Koch. Optical Fiber Telecommunications IIIB. Academic Press, San Diego, 199 7. 60. Ivan P. Kaminow and Tingye Li. Optical Fiber Telecommunications ... random, %91 ,95 .266,317 sampling, 7&77, 79, 3 total, 92 ,266-267 wideband, 3 Jitter analyzer, 93 Jitter bandwidth, 93 ,267 litter generation, 93 ,=-266,2 69 Jit...

Ngày tải lên: 14/08/2014, 09:21