Control of coherent information via on chip photonic-phononic emitter-receivers

Abstract

Rapid progress in silicon photonics has fostered numerous chip-scale sensing, computing, and signal processing technologies. However, many crucial filtering and signal delay operations are difficult to perform with all-optical devices. Unlike photons propagating at luminal speeds, GHz-acoustic phonons with slow velocity allow information to be stored, filtered, and delayed over comparatively smaller length-scales with remarkable fidelity. Hence, controllable and efficient coupling between coherent photons and phonons enables new signal processing technologies that greatly enhance the performance and potential impact of silicon photonics. Here, we demonstrate a novel mechanism for coherent information processing based on traveling-wave photon-phonon transduction, which achieves a phonon emit-and-receive process between distinct nanophotonic waveguides. Using this device physics-which can support 1-20GHz frequencies-we create wavelength-insensitive radio-frequency photonic filters with an unrivaled combination of stopband attenuation, selectivity, linewidth, and power-handling in silicon. More generally, this emit-receive concept is the impetus for numerous powerful new signal processing schemes.

Main text (7 pages and 4 figures). Supplementary information (6 pages and 2 figures)

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Cited by in corpus (8)

• Surface acoustic wave photonic devices in silicon on insulator
• Hexagonal Boron Nitride Phononic Crystal Waveguides
• The Phonon-Limited-Linewidth of Brillouin Lasers at Cryogenic Temperatures
• Propagation and imaging of mechanical waves in a highly-stressed single-mode phononic waveguide
• Designing of strongly confined short-wave Brillouin phonons in silicon waveguide periodic lattices
• Engineering dissipation with phononic spectral hole burning
• Elastic Wave Eigenmode Solver for Acoustic Waveguides
• Opto-Mechanical Interactions in Multi-Core Optical Fibers and Their Applications