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Showing 1 to 12 of 12 for “"Gain switching"”.
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Monolithically integrated, high coherence frequency comb generation through on-chip gain switching
… frequency combs that are generated through gain switching. Simulation analysis is carried out to investigate the effects of experimental parameters on the quality of gain switched combs and extensive experimental analysis is carried out to examine the experimental conditions required to …
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Optical pulse processing towards Tb/s high-speed photonic systems
… develops the pulse generation technique of gain switching to provide simple and cost efficient pulse sources. The poor pulse quality typically associated with gain switching is enhanced by developing all-optical methods. The main attribute of the first pulse generation scheme presented is …
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Slow and Fast Light Using Quantum-Dot and Quantum-Well Semiconductor Optical Amplifiers
… and population oscillation in a quantum-well gain medium. Control of optical advance and bandwidth is achieved by the medium's electrical bias or the optical pump power. Moreover, the fast light in the cascade of N number of quantum-well SOAs is experimentally and theoretically investigated. …
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Design of 10 Gb/s burst-mode receivers for high-split extended reach PONs
… Firstly, the burst-mode receiver locks its gain setting within 6 ns avoiding packet loss due to gain switching during data payload reception. Secondly, the burst-mode receiver detects both burst start and burst end, making it the first burst-mode receiver of its kind to operate without any …
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Radio frequency and terahertz signals generated by passively mode-locked semiconductor lasers
… using semiconductor lasers, for example: Q-switching, gain switching or mode-locking schemes. In general the active or passive mode-locking techniques require the use of a modulator or a saturable absorber in order to achieve the phase synchronisation. The laser diodes studied in this …
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Radio over fibre distribution systems for ultra-wide band and millimetre wave applications
… Gaussian pulse position modulation (PPM) using a gain switched laser (GSL). The simulation and experimental results have been carried out to show the suitability of employing gain switching in UWB over fibre systems (UWBoF) to develop a reliable, simple, and low cost technique for distributing UWB …
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CARBON DIOXIDE LASER RADAR FOR MONITORING ATMOSPHERIC TRANSMITTANCE AND THE ATMOSPHERIC AEROSOL (REMOTE SENSING, INFRARED).
… returns was developed, which included a gain-switching amplifier to compress the dynamic range of the return signal. The entire system is operated under computer control and data acquisition and storage are fully automated. A laser pulse energy monitor allows sequential returns to be …
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Monolithic 1.3 μm InAs/GaAs Quantum Dot Lasers on Silicon: Simulation and Experiment
… the QD lasers’ dynamics by means of gain switching, small-signal and large-signal modulation. 150 ps short gain-switched pulses, modulation bandwidths of 1.6 GHz to 2.3 GHz, and optical eyes at 1.5 Gb/s are obtained from 2.5 mm long ridge-waveguide lasers grown and fabricated at …
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Short pulse generation from semiconductor lasers: characterization, modeling and applications
… have been used for pulse generation using the gain switching technique, obtaining the shortest duration of 55 ps at different repetition frequencies. The duration, peak amplitude, jitter and spectral width of the pulses have been measured as a function of the gain switching conditions. The …
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Ultrashort pulse generation from diode laser devices
… major topics discussed in the thesis. Although gain switching is the simplest way for ultrashort pulse generation, it proves to be quite effective to deliver high energy pulses on condition that the pumping pulses with extremely fast rising time and high enough amplitude are applied on specially …
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Wavelength tunable transmitters for future reconfigurable agile optical networks
… and chirp control can be tolerated. Therefore a gain-switched FP laser provides an ideal source for wavelength tuneable pulse generation at high data rates (10 Gb/s). A self-seeding scheme that generates single mode pulses with high SMSR (> 30 dB) and small pulse duration is demonstrated. A FBG …
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Terahertz oscillation and stimulated emission from planar microcavities
… apply a set of rate equations that explains the gain switching process.