Electrically interfaced Brillouin-active waveguide for multi-domain transduction
Abstract
New strategies to convert signals between optical and microwave domains could play a pivotal role in advancing both classical and quantum technologies. Through recent studies, electro-optomechanical systems have been used to implement microwave-to-optical conversion using resonant optical systems, resulting in transduction over limited optical bandwidth. Here, we present an optomechanical waveguide system with an integrated piezoelectric transducer that produces electro-optomechanical transduction over a wide optical bandwidth through coupling to a continuum of optical modes. Efficient electromechanical and optomechanical coupling within this system enables bidirectional optical-to-microwave conversion with a quantum efficiency of up to 54.16 dB. When electrically driven, this system produces a low voltage acousto-optic phase modulation over a wide (100 nm) wavelength range. Through optical-to-microwave conversion, we show that the amplitude-preserving nature inherent to forward Brillouin scattering is intriguing and has the potential to enable new schemes for microwave photonic signal processing. We use these properties to demonstrate a multi-channel microwave photonic filter by transmitting an optical signal through a series of electro-optomechanical waveguide segments having distinct resonance frequencies. Building on these demonstrations, such electro-optomechanical systems could bring flexible strategies for modulation, channelization, and spectrum analysis in microwave photonics.
Cite
@article{arxiv.2307.07875,
title = {Electrically interfaced Brillouin-active waveguide for multi-domain transduction},
author = {Yishu Zhou and Freek Ruesink and Margaret Pavlovich and Ryan Behunin and Haotian Cheng and Shai Gertler and Andrew L. Starbuck and Andrew J. Leenheer and Andrew T. Pomerene and Douglas C. Trotter and Katherine M. Musick and Michael Gehl and Ashok Kodigala and Matt Eichenfield and Anthony L. Lentine and Nils Otterstrom and Peter Rakich},
journal= {arXiv preprint arXiv:2307.07875},
year = {2023}
}