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We investigate a novel In0.53Ga0.47As/Al0.85Ga0.15As0.56Sb0.44 (hereafter InGaAs/AlGaAsSb) avalanche photodiode (APD) for high speed operation. The fabricated APD with 20 µm diameter exhibits a maximum responsivity of 5.33 A/W at 1550 nm, a maximum 3-dB bandwidth (f3dB) of 14 GHz, and a clear eye diagram at 10 Gb/s. A GBP value as high as 407.4 GHz was extracted. The results demonstrate the potential...
The development of 100 Gb/s transponder technology is progressing rapidly to meet the needs of next-generation optical/IP carrier networks. In this paper, we describe the upgrade of an installed 10 Gb/s field system to 100 Gb/s using a real-time single-carrier, coherent 100 Gb/s polarization-multiplexed quadrature-phase-shift keyed channel. Performance sufficient for error-free operation after forward-error-correction...
This paper presents the design simulation of compact meander line antenna for GSM/DAB/DCS bands used in mobile handsets. The dimensions of the LTCC chip antenna are 20×10×0.85 mm3. The structure includes two meander patches. The bottom meander patch is tuned to GSM band, and the top meander patch is designed for DCS band. The coupling between the two meander patches is used to obtain DAB band, instead...
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