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据日本《于卜亡汐,>学会志》1992年第11期报道,日本神户制钢所用超导薄膜的约瑟夫逊器件检测器成功地检测频率770GHz亚微米波段的电磁波信号。 采用半导体器件以前的检测器,其接收范围为30GHz。现所开发的高频检测器的器件中,使用了在衬底上人为形成台阶(“段差”),使其成为高速工作的台阶微桥型约瑟夫逊器件。并在衬底上蒸发钇的超导薄膜。在该器件上,照射110GHz的高频波,已测到约瑟夫逊器件的工作特性和电波的调谐特性,最高已能测出770GHz的信号,可望应用于下一代的大容量、高质量的通信。 另外,由于30GHz以上的频段相当于大气中的氧化氮等产生的电磁波,若研制成超高频检测器,就可应用于大气污染物的监视和陆地与海洋中的资源探测,进而也可应用于人体内温度分布的测量等。
According to Japan “in Bu dead Xi,” Journal “No. 11 of 1992 reported that Japan’s Kobe Steel used superconducting thin film Josephson device detector successfully detected the frequency of 770GHz sub-micron band electromagnetic signals. The use of semiconductor devices before the detector, the receiving range of 30GHz. Now developed high-frequency detector devices, the use of man-made step on the substrate (”step"), making it a high-speed step micro-bridge Josephson devices. And evaporating yttrium superconducting thin film on the substrate. On this device, the high-frequency wave of 110GHz is irradiated and the operating characteristics of Josephson device and the tuning characteristics of the radio wave have been measured. Up to 770GHz signal can be measured, which is expected to be applied to the next generation of high-capacity and high-quality communication. In addition, since the frequency band above 30 GHz is equivalent to the electromagnetic wave generated by the nitrogen oxides in the atmosphere, if the ultrahigh-frequency detector is developed, it can be applied to the monitoring of air pollutants and the resource exploration on land and sea, and further applicable In the human body temperature distribution measurement.