2019年第66回応用物理学会春季学術講演会
2019年3月9日〜3月12日東京工業大学 大岡山キャンパス
2019年第66回応用物理学会春季学術講演会
2019年3月9日〜3月12日東京工業大学 大岡山キャンパス
[12a-W631-2]Kilohertz coupling rate between mechanical oscillators via optical cavity resonance
〇(PC)Feng Tian1,3、Masato Takiguchi1,2、Eiichi Kuramochi1,2、Hisashi Sumikura1,2、Akihiko Shinya1,2、Masaya Notomi1,2,3(1.NTT BRL、2.NTT NPC、3.Tokyo Tech)
Coupling of mechanical oscillators is a crucial technology for constructing micro/nano-mechanical processors for RF signals. The coupling has been realized with structural, electrical and optical principles. All-optical coupling has unique advantages, for example, compatibilities with both the large-scale fiber-optic networks and the nanoscale PICs or optical quantum information processors. Nowadays, optical coupling of disparate mechanical oscillators has been realized, but the feature size is in millimeter scale and the coupling rate is ~10 Hz. Here, we designed the nano-mechanical oscillators which are coupled via optical resonance of double-nanobeam PhC cavities. The optical spring effect in this optomechanical device plays a key role in coupling the mechanical oscillators. The measurement result shows a coupling rate of 4 kHz, which is as high as the electrical field coupling.