Waveguide-loaded silica fibers for coupling to high-index micro-resonators
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 18, 2016
- Source ID
- 10.1063/1.4940021
Entities
People
- M. J. Burek
- P. Latawiec
- V. Venkataraman
- Y-I Sohn
Organizations
- Defense Advanced Research Projects Agency
- Harvard University
- National Science Foundation