Observation of a Brillouin dynamic grating in silicon nitride waveguides

Abstract

Brillouin enhanced four wave mixing in the form of a Brillouin dynamic grating (BDG) enables a uniquely tunable filter, whose properties can be tuned by purely optical means. This makes the BDG a valuable tool in microwave photonics (MWP). BDGs have been studied extensively in fibers, but the only observation in an integrated platform required exotic materials. Unlocking BDG in a standard and mature platform will enable its integration into large-scale circuits. Here we demonstrate the first observation of a BDG in a silicon nitride (Si${}_3$N${}_4$) waveguide. We also present a new, optimized design, which will enhance the BDG response of the waveguide, unlocking a path to large-scale integration into MWP circuits.

References in corpus (5)

• Cavity Optomechanics
• Controlling phonons and photons at the wavelength-scale: silicon photonics meets silicon phononics
• 25 kHz narrow spectral bandwidth of a wavelength tunable diode laser with a short waveguide-based external cavity
• Ring resonator enhanced mode-hop-free wavelength tuning of an integrated extended-cavity laser
• Ultrahigh Dynamic Range and Low Noise Figure Programmable Integrated Microwave Photonic Filter