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The radio-over fiber (RoF) transmission is a promising method for broadband signal transmission over long distances. For intensity modulated broadband signals, the fiber dispersion accumulated over long fiber can lead to power fading of the signal. The power fading drawback can be largely alleviated when optical single-side-band (OSSB) modulation approach is adopted, which had been demonstrated via...
In this paper, we propose and experimentally verify that optical filters with fast linear roll-off property, when incorporated in an optical transmitter, can minimize not only the fading effect commonly observed in high bit rate, long distance fiber links, but also improve the link Carrier-to-Noise ratio, and at the same time can maintain the 3rd order inter-modulation distortions at a relatively...
We demonstrated a GaN-based p-i-n photodiode by inserting a thin low-temperature-grown-GaN layer between p-type Al0.2Ga0.8N window and intrinsic GaN layer. As compared with control device, our demonstrated one can achieve 3 fold bandwidth-efficiency-products improvement.
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