Mid-infrared Vernier racetrack resonator tunable filter implemented on a germanium on SOI waveguide platform [Invited]
Loading...
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Materials Express
Abstract
Currently, most widely tunable lasers rely on an external diffraction grating to tune the
laser wavelength. In this paper we present the realization of a chip-scale Vernier tunable racetrack
resonator filter on the Ge-on-SOI waveguide platform that allows for wide tuning (108 nm free
spectral range) in the 5 m wavelength range without any moving parts. The fabricated racetrack
resonators have a loaded Q-factor of 20000, resulting in a side-peak suppression of more than 20
dB, which is more than sufficient for wavelength selection in an external cavity laser.
Description
Keywords
Mid-infrared Vernier racetrack, Resonator tunable filter, Germanium
Citation
Radosavljevic, S., Beneitez, N. T., Katumba, A., Muneeb, M., Vanslembrouck, M., Kuyken, B., & Roelkens, G. (2018). Mid-infrared Vernier racetrack resonator tunable filter implemented on a germanium on SOI waveguide platform. Optical Materials Express, 8(4), 824-835. https://doi.org/10.1364/OME.8.000824