| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
We examined circuit designs of waveguide-based optical switches used in optical fiber communication systems. In a 1xN phased-array optical switch, we employ window functions other than conventional Gaussian for optical power ratio between arrayed-waveguides, which gives an extinction ratio as high as 50 dB in simulation. In a nested interferometer optical switch, we show its circuit configuration to expand operational wavelength range and increase output port counts. These results show that we successfully establish the optical circuit design of large port count optical switches.
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