title: Fabrication of a microresonator-fiber assembly maintaining a high-quality factor by CO₂ laser welding.
abstract: We demonstrate fabrication of a microtoroid resonator of a high-quality (high-Q) factor using femtosecond laser three-dimensional (3D) micromachining. A fiber taper is reliably assembled to the microtoroid using CO2 laser welding. Specifically, we achieve a high-Q-factor of 2.12 × 10(6) in the microresonator-fiber assembly by optimizing the contact position between the fiber taper and the microtoroid.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Fang
authors.forename: Jintian
authors.initials: J
authors.lastname: Lin
authors.forename: Min
authors.initials: M
authors.lastname: Wang
authors.forename: Zhengming
authors.initials: Z
authors.lastname: Liu
authors.forename: Jinping
authors.initials: J
authors.lastname: Yao
authors.forename: Lingling
authors.initials: L
authors.lastname: Qiao
authors.forename: Ya
authors.initials: Y
authors.lastname: Cheng