title: Microwave platform as a valuable tool for characterization of nanophotonic devices.
abstract: The rich potential of the microwave experiments for characterization and optimization of optical devices is discussed. While the control of the light fields together with their spatial mapping at the nanoscale is still laborious and not always clear, the microwave setup allows to measure both amplitude and phase of initially determined magnetic and electric field components without significant perturbation of the near-field. As an example, the electromagnetic properties of an add-drop filter, which became a well-known workhorse of the photonics, is experimentally studied with the aid of transmission spectroscopy measurements in optical and microwave ranges and through direct mapping of the near fields at microwave frequencies. We demonstrate that the microwave experiments provide a unique platform for the comprehensive studies of electromagnetic properties of micro- and nanophotonic devices, and allow to obtain data which are hardly acquirable by conventional optical methods.
authors.affiliation: ITMO University, Metamaterials Laboratory, St. Petersburg, 197101, Russia.
authors.forename: Ivan
authors.initials: I
authors.lastname: Shishkin
authors.affiliation: ITMO University, Metamaterials Laboratory, St. Petersburg, 197101, Russia.
authors.forename: Dmitry
authors.initials: D
authors.lastname: Baranov
authors.affiliation: ITMO University, Metamaterials Laboratory, St. Petersburg, 197101, Russia.
authors.forename: Alexey
authors.initials: A
authors.lastname: Slobozhanyuk
authors.affiliation: ITMO University, Metamaterials Laboratory, St. Petersburg, 197101, Russia.
authors.forename: Dmitry
authors.initials: D
authors.lastname: Filonov
authors.affiliation: ITMO University, Metamaterials Laboratory, St. Petersburg, 197101, Russia.|Institute for Analytical Instrumentation of RAS, St. Petersburg, 198095, Russia.
authors.forename: Stanislav
authors.initials: S
authors.lastname: Lukashenko
authors.affiliation: ITMO University, Metamaterials Laboratory, St. Petersburg, 197101, Russia.
authors.forename: Anton
authors.initials: A
authors.lastname: Samusev
authors.affiliation: ITMO University, Metamaterials Laboratory, St. Petersburg, 197101, Russia.
authors.forename: Pavel
authors.initials: P
authors.lastname: Belov