| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2016: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
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| Outline of Final Research Achievements |
Terahertz (THz) communications research has recently become very active over the world to meet an urgent demand in high-speed wireless links. Carrier frequencies from 200 GHz to 400 GHz have been hot spots for researchers, mainly because of the availability of high-performance enabling devices for transmitters and receivers. One of the critical problems in the use of carrier frequencies of over 100 GHz is an atmospheric attenuation. There are three windows, where the attenuation becomes low and relatively flat over 100-GHz bandwidth; (I) 200 GHz-300 GHz, (II) 625 GHz-725 GHz, (III) 800 GHz-900 GHz. This study aimed at an exploration of the band (II) as the next center stage of THz communications research, developing wideband transmitters based on photonics and highly-sensitive receivers using homodyne and heterodyne detection, and successfully achieved a record data rate of over 12.5 Gbit/s up to 720 GHz.
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