Broadband Circuits for Optical Fiber Communication phần 10 pps

... Optical feedforward linearization, 292 Optical fiber, 11, 13-14 Optical filter, 35-36 Optical in-line amplifier, l3,62,256 Optical isolator, 35 Optical modulation amplitude, 237 Optical ... 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 Fibe...

Ngày tải lên: 14/08/2014, 09:21

... for the entire bit period. For example, when transmitting the periodic bit pattern “ 0101 0101 0 .” at 10Gb/s in NRZ formiat, a 5-GHz square wave with 50% duty cycle is produced.2 0 0101 1 0101 ... overview of circuits for optical communi- cation, including phase-locked loops and clock and data recovery circuits [ 1411. The latest developments in integrated circui...

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 ... becomes very time consuming to perform an accurate BER measurement. For example, to collect 10 errors at a BER of and a bit rate of 10Gb/s, we have to wait on average for lo...

Ngày tải lên: 14/08/2014, 09:21

... with ideal timing except for data patterns ending in “. . . 010, ” in which case the falling edge is advanced by AT, and for data patterns ending in “. . . 101 ,” in which case the ... 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 am...

Ngày tải lên: 14/08/2014, 09:21

... 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 of 10 dB per decade, ... 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 s...

Ngày tải lên: 14/08/2014, 09:21

... 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 power of 1 mW (OdBm), and a 10- Gb/s ... all directions and it is difficult to couple much of it into a fiber. For example, an LED may couple 10 /IW optical power into a fiber, whereas a laser easily can produce 1 mW....

Ngày tải lên: 14/08/2014, 09:21

... driver cannot produce the full swing for a “ 0101 0101 . . .” pattern, resulting in intersymbol interference (ISI) and vertical eye closure. It is recommended for a non-return-to-zero (NRZ) ... nonlinear leakage currents), or to permit higher optical output power levels, or both. Optical Feedforward Linearization. Optical feedforward linearization capitalizes on the fa...

Ngày tải lên: 14/08/2014, 09:21

... 1.5 165 Si BJT 100 2.0 205 100 I .4 350 Si BJT 1 00 3.0 350 Si BJT Agere TLADO 1 1 OG 10. 0 30 100 120 1.7 780 GaAs HFET Agere TCLDOl 1 OG 10. 0 25 100 100 780 GaAs HFET ... 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 di...

Ngày tải lên: 14/08/2014, 09:21

... power Optical power when transmitting a zero Optical power when transmitting a one Optical noise power due to amplified spontaneous emission Optical input power (into modulator) Optical ... 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 going fr...

Ngày tải lên: 14/08/2014, 09:21