Download Ultrafast All-Optical Signal Processing Devices by Dr. Hiroshi Ishikawa PDF

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By Dr. Hiroshi Ishikawa

Semiconductor-based Ultra-Fast All-Optical sign Processing units –a key know-how for the following iteration of ultrahigh bandwidth optical conversation systems!The advent of ultra-fast communique platforms in keeping with all-optical sign processing is taken into account to be probably the most promising how one can deal with the quickly expanding worldwide conversation site visitors. Such structures will permit genuine time super-high definition relocating images similar to excessive truth TV-conference, distant analysis and surgical procedure, cinema leisure and lots of different purposes with small strength intake. the foremost factor to gain such platforms is to advance ultra-fast optical units reminiscent of gentle assets, all-optical gates and wavelength converters.Ultra-Fast All-Optical sign Processing units discusses the cutting-edge improvement of semiconductor-based ultrafast all-optical units, and their a variety of sign processing purposes for bit-rates 100Gb/s to 1Tb/s.Ultra-Fast All-Optical sign Processing units: * presents an intensive and in-depth remedy of the newest achievements in ultrafast all-optical units * Discusses destiny networks with purposes equivalent to HD-TV and super-high definition relocating monitors as a motivating history for units examine * Covers mode-locked semiconductor lasers, electro-absorption modulator established 160Gb/s sign assets, SOA dependent symmetric Mach-Zehnder variety all-optical gates, intersubband transition gate equipment, and extra * Explains the technical matters in the back of turning the ultra-fast optical units into sensible operating instruments * Examples of above 160Gb/s transmission experiments * Discusses destiny clients of the ultra-fast sign processing units This important reference will supply machine researchers and engineers in undefined, researchers at universities (including graduate scholars, and submit doctorial researchers and professors) and learn institutes with an intensive knowing of ultrahigh bandwidth optical communique structures. gadget and verbal exchange marketplace watchers also will locate this booklet invaluable.

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Reproduced by permission of ©2007 IEEE) light instead of a 160-Gb/s signal. The sampling trace shows that the 40-Gb/s signal was clearly separated from the 160-Gb/s signal. The suppression ratio for neighboring channels was estimated to be more than 15 dB. Since the polarization state of the incoming signal is not always constant, the polarization insensitivity is an essential requirement for stable operation of an optical demultiplexer. 5 dB by applying tensile strain to an InGaAsP-based MQW electroabsorption layer, so that polarization-insensitive demultiplexing is secured.

34 Output power variation of 80-Gb/s OUT 2 as a function of the operation temperatures of EAM 2 and EAM 4 [65]. 35 CW output power variation at 160-Gb/s ports as a function of the offset temperature [65]. 36 shows the block diagram of a 160-Gb/s OTDM transmitter, consisting of an optical pulse source and an optical multiplexer. The optical pulse source generates a 40-GHz pulse train, and is launched to the 160-Gb/s optical multiplexer. At the multiplexer, the pulse stream is converted into four 40-Gb/s data streams and then bit-interleaved to a 160-Gb/s signal.

Triangles and circles correspond to the output pulse width measured at the first EAM and the second EAM, respectively. 7 nm. 28 Modulation E/O response and return loss characteristics of an SPM-EA modulator [61]. 29 Optical pulse source with two-stage EA modulators [61]. (Reproduced by permission of ©2005 IEICE) the applied bias was kept the same for each EAM. The average light power launched to both EAMs was set at 10 dBm. 2 ps was obtained below the bias of −3 V. 11). Another important advantage of cascaded EAM structure is in enhancing the pulse extinction ratio.

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