| Budget Amount *help |
¥48,360,000 (Direct Cost: ¥37,200,000、Indirect Cost: ¥11,160,000)
Fiscal Year 2012: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2011: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2010: ¥35,360,000 (Direct Cost: ¥27,200,000、Indirect Cost: ¥8,160,000)
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| Research Abstract |
As a fundamental technique for realizing functional photonic integrated circuits based on silicon waveguides, a surface-activated direct bonding technique has been investigated for integrating III-V compound semiconductors and magneto-optical crystals used for light sources and nonreciprocal devices, respectively. Based on this technique, silicon waveguide optical isolators and circulators are fabricated with an isolation of 30 dB and 15 dB, respectively. Also, a TE-TM mode converter is realized with a maximum conversion efficiency of 97 %. An apodized grating coupler can provides a coupling efficiency of 86 % for a randomly polarized light wave between a silicon waveguide and a surface mounted photo-diode. A fabrication process of photonic circuits integrating these functional devices is also investigated.
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