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一组法国的研究人员已设计出了一种接口元件,它用幅度调制的光来诱发微波振荡器输出中的频率调制,这种接口元件对于光纤和微波通信网之间的直接连接是非常有前途的。研究人员曾用二极管激光器出来的聚焦的0.85μm的光照射砷化镓的MESFET(金属半导体场效应晶体管),并发现,可用激光器功率幅值的微量变化来调谐MESFET标称10Gc的振荡频率,还断定激光功率调制的作用在低光功率部份;在大约1毫瓦时,微波频率与激光器照度之间
A group of French researchers have devised an interface element that uses amplitude-modulated light to induce frequency modulation in the output of the microwave oscillator. This interface element is very useful for direct connections between optical fibers and microwave communication networks Future The researchers used a focused 0.85μm light from a diode laser to illuminate a gallium arsenide-based MESFET (metal-semiconductor field-effect transistor) and found that it is possible to tune the oscillation frequency of the MESFET nominal 10Gc with a slight change in laser power amplitude Determine the role of laser power modulation in the low optical power part; at about 1 milliwatt, between the microwave frequency and the laser illumination