| Budget Amount *help |
¥44,330,000 (Direct Cost: ¥34,100,000、Indirect Cost: ¥10,230,000)
Fiscal Year 2019: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥25,870,000 (Direct Cost: ¥19,900,000、Indirect Cost: ¥5,970,000)
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| Outline of Final Research Achievements |
The 1-THz frequency band corresponds to the upper limit of electronics operating speeds. One of the most critical issues in the 1-THz band is the large losses in conventional metal electronic circuits. In this study, 1-THz-band circuits based on metal-free silicon photonic crystals, which are dielectric microstructures with a periodic refractive index that is distributed on a scale comparable to the wavelength, were developed. The propagation losses are as low as 0.1 dB/cm at 1-THz band, which is one order of magnitude smaller than that of present metallic hollow waveguides. Error-free data transmission at a data rate of 1 Gbit/s using a developed waveguide is demonstrated, showing the promise of photonic crystals in the 1-THz band.
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