2012 Fiscal Year Final Research Report
Silicon waveguide photonic functional devices based on direct bondingof heterogeneous crystals and their applications to photonic integrated circuits
| Project/Area Number |
22246009
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
MIZUMOTO Tetsuya 東京工業大学, 大学院・理工学研究科, 教授 (00174045)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 光制御 / 光集積回路 / シリコンフォトニクス / 異種結晶接合 |
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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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