Low loss coupling and compensation technology of a nano-size optical waveguide with quantum dot optical gain device

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390043
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nano/Microsystems
• Research Institution: National Institute of Information and Communications Technology
• Principal Investigator: Yamamoto Naokatsu 国立研究開発法人情報通信研究機構, ネットワークシステム研究所ネットワーク基盤研究室, 研究マネージャー (60328523)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 量子ドット / 光増幅器 / ヘテロジニアス / シリコンフォトニクス / プラズモニクス / 半導体レーザ / ホーリーファイバ / スポットサイズ変換

Outline of Final Research Achievements

We proposed a novel crystal growth technique as “Sandwiched sub-nano separation (SSNS)” to obtaine a high-quality and high-density quantum dots, and then a broad band semiconductor optical amplifier device for a wavelength between 1250 and 1310 nm was successfully developed. We conducted research aiming at efficient coupling of quantum dot optical amplifier and nano-structured device such as a plasmonic device. We found that the photonic nanotube structure can converge the light waves to several 100 nm or less. A quantum dot optical gain device and silicon nano-wire waveguide ring resonator of several 100 nm size were effectively coupled with a butt-joint technique, and we succeeded in first developing the broadband heterogeneous quantum dot laser. These are important fundamental technologies for amplifying and compensating for the optical loss due to the nano-structured device with quantum dot optical gain device, and it has become a remarkable research result of invited papers etc.

Free Research Field

光集積デバイス技術