title: Frequency locked micro disk resonator for real time and precise monitoring of refractive index.
abstract: We experimentally demonstrate a frequency modulation locked servo loop, locked to a resonance line of an on-chip microdisk resonator in a silicon nitride platform. By using this approach, we demonstrate real-time monitoring of refractive index variations with a precision approaching 10(-7) RIU, using a moderate Q factor of 10(4). The approach can be applied for intensity independent, dynamic and precise index of refraction monitoring for biosensing applications.
authors.affiliation: Department of Applied Physics, The Benin School of Engineering and Computer Science, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.
authors.forename: Liron
authors.initials: L
authors.lastname: Stern
authors.forename: Ilya
authors.initials: I
authors.lastname: Goykhman
authors.forename: Boris
authors.initials: B
authors.lastname: Desiatov
authors.forename: Uriel
authors.initials: U
authors.lastname: Levy