title: All-optical switching using Kerr effect in a silica toroid microcavity.
abstract: We demonstrate experimentally an all-optical switching operation using the Kerr effect in a silica toroid microcavity. Thanks to the small mode volume and high quality factor of the silica toroid microcavity, we achieved on-chip optical Kerr switching with an input power of 2 mW. This value is the smallest among all previously reported on-chip optical Kerr switches. We also show that this value can be reduced to a few tens of μW by employing a mode with a Q factor of > 2 × 10⁷.
authors.forename: Wataru
authors.initials: W
authors.lastname: Yoshiki
authors.forename: Takasumi
authors.initials: T
authors.lastname: Tanabe