Background-Free Characterization of Traveling-Wave Optomechanical Devices with Ultrafast Time Domain Spectroscopy
Abstract not provided.
Publications
Optimization of Optical Forces in Nanoscale Photonic Waveguides via Dispersion Engineering
Abstract not provided.
RF optical signal processing using micro-scale phononic crystals
Abstract not provided.
Toward high fidelity spectral sensing and RF signal processing in silicon photonic and nano-opto-mechanical platforms
Proceedings of SPIE - The International Society for Optical Engineering
The performance of electronic systems for radio-frequency (RF) spectrum analysis is critical for agile radar and communications systems, ISR (intelligence, surveillance, and reconnaissance) operations in challenging electromagnetic (EM) environments, and EM-environment situational awareness. While considerable progress has been made in size, weight, and power (SWaP) and performance metrics in conventional RF technology platforms, fundamental limits make continued improvements increasingly difficult. Alternatively, we propose employing cascaded transduction processes in a chip-scale nano-optomechanical system (NOMS) to achieve a spectral sensor with exceptional signal-linearity, high dynamic range, narrow spectral resolution and ultra-fast sweep times. By leveraging the optimal capabilities of photons and phonons, the system we pursue in this work has performance metrics scalable well beyond the fundamental limitations inherent to all electronic systems. In our device architecture, information processing is performed on wide-bandwidth RF-modulated optical signals by photon-mediated phononic transduction of the modulation to the acoustical-domain for narrow-band filtering, and then back to the optical-domain by phonon-mediated phase modulation (the reverse process). Here, we rely on photonics to efficiently distribute signals for parallel processing, and on phononics for effective and flexible RF-frequency manipulation. This technology is used to create RF-filters that are insensitive to the optical wavelength, with wide center frequency bandwidth selectivity (1-100GHz), ultra-narrow filter bandwidth (1-100MHz), and high dynamic range (70dB), which we will present. Additionally, using this filter as a building block, we will discuss current results and progress toward demonstrating a multichannel-filter with a bandwidth of < 10MHz per channel, while minimizing cumulative optical/acoustic/optical transduced insertion-loss to ideally < 10dB. These proposed metric represent significant improvements over RF-platforms.
Direct RF to optical link based on film bulk acoustic wave resonators (FBAR)
2016 Conference on Lasers and Electro-Optics, CLEO 2016
We demonstrate conversion of a 10GHz radio frequency signal directly to fiber optics. A Fabry-Perot cavity formed between a fiber tip and an AlN-film acoustic resonator electrode enables resonantly enhanced phase modulation of back-reflected light.
Nano-Scale Optomechanical Devices and Phononic Crystals for RF Signal Processing
Abstract not provided.
Stimulated Mach-wave Phonon Emission: Toward Hybrid Photonic-Phononic Filtering
Abstract not provided.
Ultrafast Optical Time-Domain Spectroscopy of Phonon Transduction in Traveling-Wave Optomechanical Devices
Abstract not provided.
Stimulated Mach-wave Phonon Emission: Toward broadband phonon emitters and lasers
Abstract not provided.
Ultra-Long Duration Time-Resolved Spectroscopy with Enhanced Temporal Resolution of High-Q Nano-Optomechanical Modes using Interleaved Asynchronous Optical Sampling (I-ASOPS)
Abstract not provided.
Coherent Excitation of Multiple Nano-opto-mechanical Modes in Silicon with Ultrafast Time-domain Spectroscopy
Abstract not provided.
Coherent Excitation of Multiple Nano-opto-mechanical Modes in Silicon with Ultrafast Time-domain Spectroscopy
Abstract not provided.
Ultrafast time-resolved spectroscopy of integrated nonlinear dynamics
Abstract not provided.
Results 26–38 of 38