Ultra-fast Optical Signal Processing For Digital Communications Using All-Optical Nonlinear Interactions In Semiconductor Optical Waveguides

摘要: Title of Dissertation: ULTRA-FAST OPTICAL SIGNAL PROCESSING FOR DIGITAL COMMUNICATIONS USING ALL-OPTICAL NONLINEAR INTERACTIONS IN SEMICONDUCTOR WAVEGUIDES Ehab S. Awad, Doctor Philosophy, 2003 Dissertation directed by: Professor Julius Goldhar Department Electrical and Computer Engineering In optical communications, clock recovery, time demultiplexing, 3R regeneration are known as signal processing. Ultra-fast processing techniques mandatory in future high-speed network transmission systems to allow effective use the large fiber bandwidth light speed capabilities. One solution is all-optical that avoids bottleneck slow electronics. All-optical modulation can be achieved through nonlinearties semiconductor waveguides like EAM or SOA. Those have fast strong appropriate for ultra-fast addition, semiconductors require reasonable power operate they integrated with other devices. this work, we demonstrated a several new processing, such ultrafast recovery. We nonlinear timedependent loss/gain saturation EAM/SOA perform timing extraction. This turn used recovery from data rates up 160 Gbit/s. Simulation results shows technique has potential recover 640 Also logic AND gate using EAM. The successful operation at 10 Gbit/s 2 -1 PRBS it higher speeds. also division demultiplexing 40 simultaneous cross-absorption inside single system an error free 2-1 PRBS. Also, burst-mode propagating fiber-optic recirculating loop distance 10,000 Km. extraction retiming, while reshaping. Meanwhile, wavelength conversion re-amplification performed same time. FWM well by its been widely investigated groups SOA’s fibers. Here, showed unique characteristics, wide detuning range enhancement efficiency reverse bias. 80 co-propagation