排序方式: 共有35条查询结果,搜索用时 15 毫秒
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Dong Liang Ahmad W. Mohammad Chris Roeloffzen Qinggui Tan Li Li Xiaojun Li Bin Shao Bo Zhang Xiangke Deng Feiteng Zheng Lennart Wevers Robert Grootjans Paul Kapteijn Roelof Bernardus Timens Rick Heuvink Sami Musa 《Laser \u0026amp; Photonics Reviews》2024,18(2):2200952
High-throughput satellite (HTS) is an ideal way to realize cross-regional massive, multifaceted digital exchange services, and it requires a signal processing module that can be massively multiplexed and has high flexibility. Due to the limitations of the frequency characteristics, microwave integrated circuits are difficult to meet this requirement. One solution to this problem is photonic integrated circuits (PICs). However, full-size PIC satellite payloads containing main optoelectronic components are extremely challenging to implement on monolithic or hybrid integrated platforms. Here, the study demonstrates a hybrid integrated on-chip microwave-photonic satellite repeater with large-scale multiplexing potential and high flexibility. This is a demonstration of a hybrid integration of a InP/Si3N4 external cavity laser, arrayed InP modulators, and semiconductor optical amplifiers (SOAs), as well as multifunctional Si3N4 signal processors, to fulfill a 1 × 4 Ka-band repeater module with on-chip arrayed frequency down-conversion and outstanding narrowband photonic channelization. When combined with the full-chip photonic RF repeater, broadband, highly integrated, and cost-effective communications satellite payloads will become realizable more quickly in the near future. 相似文献
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采用逐步蔓延采样点和三角形的方法,给出了3个算法用于隐函数曲面的采样和三角化,这些算法使得隐函数曲面的重复绘制和控制都能实时进行,其采样方法具有局部适应性,能随着曲率的变化自动控制采样点的疏密程度,从而使得采样点尽量少,但又不至于遗漏表面细节,提出的三角化方法能用于其它散乱数据点的表面重构,它的算法复杂度仅为O(n)。 相似文献
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