Waveguide-loaded silica fibers for coupling to high-index micro-resonators
arXiv:1511.03332 · doi:10.1063/1.4940021
Abstract
Tapered silica fibers are often used to rapidly probe the optical properties of micro-resonators. However, their low refractive index precludes phase-matching when coupling to high-index micro-resonators, reducing efficiency. Here we demonstrate efficient optical coupling from tapered fibers to high-index micro-resonators by loading the fibers with an ancillary adiabatic waveguide-coupler fabricated via angled-etching. We demonstrate greatly enhanced coupling to a silicon multimode micro-resonator when compared to coupling via the bare fiber only. Signatures of resonator optical bistability are observed at high powers. This scheme can be applied to resonators of any size and material, increasing the functional scope of fiber coupling.
5 pages, 3 figures
References in corpus (8)
- Linear and nonlinear optical spectroscopy of a strongly-coupled microdisk-quantum dot system
- High-Q optical nanocavities in bulk single-crystal diamond
- Integrated high quality factor lithium niobate microdisk resonators
- Optical-fiber based measurement of an ultra-small volume high-Q photonic crystal microcavity
- An optical fiber-taper probe for wafer-scale microphotonic device characterization
- Strong polarization mode coupling in microresonators
- Probing the dispersive and spatial properties of planar photonic crystal waveguide modes via highly efficient coupling from optical fiber tapers
- Fabrication of Triangular Nanobeam Waveguide Networks in Bulk diamond Using Single-Crystal Silicon Hard Masks