Wavelength Dependence of a Vertically Coupled Resonator-Waveguide System
Anno: 2016
Autori: Turri F., Ramiro-Manzano F., Carusotto I., Ghulinyan M., Pucker G., Pavesi L.
Affiliazione autori: Univ Trento, Dept Phys, Nanosci Lab, I-38123 Povo, Italy; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dept Phys, I-38123 Povo, Italy; Fdn Bruno Kessler, Ctr Mat & Microsyst, I-38123 Povo, Italy
Abstract: Coupling of light to and from a microdisk resonator is a crucial step for the integration of this photonic structure in a photonic integrated circuit. However, the most common lateral coupling scheme, based on a point contact with a coplanar bus waveguide, suffers from strong wavelength dependence. This is a limiting factor for exciting efficiently the resonantmodes in a broad spectral region. In the present paper, we propose a solution based on a different configuration, known as vertical coupling configuration, where a bus waveguide is buried below the micro disk. We demonstrate theoretically and experimentally that the long interaction region provided by this geometry allows to extend the optimal coupling spectral range from IR to visible. This feature constitutes a remarkable advantage over the usual laterally coupled devices for many different applications, such as frequency conversion, allowing bandwidth limitations to be significantly diminished.
Giornale/Rivista: JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume: 34 (23) Da Pagina: 5385 A: 5390
Parole chiavi: All-optical devices; integrated optics devices; microcavity devices; resonatorsDOI: 10.1109/JLT.2016.2615331Citazioni: 6dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-14Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui