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Infrared absorption properties of fault gases are the theoretical bases of qualitative and quantitative analysis of dissolved gases in transformer oil by infrared optical methods. This paper proposed a method that can calculate gaseous infrared absorption spectrum at a given pressure or temperature. Using spectroscopic parameters found in the HITRAN2004 database, the infrared absorption properties...
InAs-InGaAs-GaAs quantum-dot (QD) structures are extensively investigated for 1.3- lasers with applications in low-cost metropolitan access and local area networks. For the purpose of monolithic integration, realization of QD electroabsorption modulators (EAMs) is equally important. However, there are few research efforts on InAs-InGaAs-GaAs QDs for EAMs. Furthermore, existing results either demonstrate...
We have previously demonstrated the improved time response performance of the heterostructure metal-semiconductor-metal (HMSM) photodetector, due to the presence of a two-dimensional electron gas (2DEG). However, the time response presents a long tail due to the slow moving holes, which would still be an impediment for high frequency operation. In order to overcome this limitation, we have developed...
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