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View article: Flat Emission Silicon Nitride Grating Couplers for Lidar Optical Antennas
Flat Emission Silicon Nitride Grating Couplers for Lidar Optical Antennas Open
Light detection and ranging (Lidar) is a key enabling technology for autonomous vehicles and drones. Its emerging implementations are based on photonic integrated circuits (PICs) and optical phased arrays (OPAs). In this work, we introduce…
View article: Surface acoustic waves Brillouin photonics on a silicon nitride chip
Surface acoustic waves Brillouin photonics on a silicon nitride chip Open
Seamlessly integrating stimulated Brillouin scattering (SBS) in a low-loss and mature photonic integration platform remains a complicated task. Virtually all current approaches fall short in simultaneously achieving strong SBS, low losses,…
View article: Integrated microwave photonic functionalities on a hybrid integrated InP-Si<sub>3</sub>N<sub>4</sub> PIC platform
Integrated microwave photonic functionalities on a hybrid integrated InP-Si<sub>3</sub>N<sub>4</sub> PIC platform Open
<p>This paper describes our hybrid integrated microwave photonic chip platform where ultra-low-loss Si3N4-based-TriPleX <sup>®</sup> and active InP integrated circuits are combined to enable broadband and high frequen…
View article: Flat emission grating couplers design enabling optical antennas for high performance LIDAR systems
Flat emission grating couplers design enabling optical antennas for high performance LIDAR systems Open
We propose a novel design of grating couplers to be used as the building blocks of the optical antennas of Lidar systems, designed in the well-established Si3N4-TriPleX platform, that offers low-loss waveguides and allows the integration o…
View article: Observation of a Brillouin dynamic grating in silicon nitride waveguides
Observation of a Brillouin dynamic grating in silicon nitride waveguides Open
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). …
View article: Observation of a Brillouin dynamic grating in silicon nitride waveguides
Observation of a Brillouin dynamic grating in silicon nitride waveguides Open
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).…
View article: Stimulated Brillouin scattering in tellurite-covered silicon nitride waveguides
Stimulated Brillouin scattering in tellurite-covered silicon nitride waveguides Open
Stimulated Brillouin scattering (SBS), a coherent nonlinear effect coupling acoustics and optics, can be used in a wide range of applications such as Brillouin lasers and tunable narrowband RF filtering. Wide adoption of such technologies …
View article: Brillouin and Kerr nonlinearities of a low-index silicon oxynitride platform
Brillouin and Kerr nonlinearities of a low-index silicon oxynitride platform Open
Nonlinear optical effects including stimulated Brillouin scattering (SBS) and four-wave mixing (FWM) play an important role in microwave photonics, optical frequency combs, and quantum photonics. Harnessing SBS and FWM in a low-loss and ve…
View article: Observation and enhancement of stimulated Brillouin scattering in tellurite covered silicon nitride waveguides
Observation and enhancement of stimulated Brillouin scattering in tellurite covered silicon nitride waveguides Open
We show, for the first time, stimulated Brillouin scattering in tellurite covered silicon nitride waveguides. In the standard geometry the measured peak gain coefficient is 4.5 m−1W−1. We further enhance the Brillouin gain by applying clad…
View article: Observation and enhancement of stimulated Brillouin scattering in tellurite covered silicon nitride waveguides
Observation and enhancement of stimulated Brillouin scattering in tellurite covered silicon nitride waveguides Open
We show, for the first time, stimulated Brillouin scattering in tellurite covered silicon nitride waveguides. In the standard geometry the measured peak gain coefficient is 4.5 m−1W−1. We further enhance the Brillouin gain by applying clad…
View article: Modelling Brillouin activated microcombs in multi-layered silicon nitride waveguides
Modelling Brillouin activated microcombs in multi-layered silicon nitride waveguides Open
We investigate a numerical model to simulate the optical frequency comb generation in Kerr and Brillouin active resonators with gain parameters in the same order of magnitude. We show that either a backward or forward comb can be generated…
View article: Modelling Brillouin activated microcombs in multi-layered silicon nitride waveguides
Modelling Brillouin activated microcombs in multi-layered silicon nitride waveguides Open
We investigate a numerical model to simulate the optical frequency comb generation in Kerr and Brillouin active resonators with gain parameters in the same order of magnitude. We show that either a backward or forward comb can be generated…
View article: Brillouin and Kerr nonlinearities of a low-index silicon oxynitride platform
Brillouin and Kerr nonlinearities of a low-index silicon oxynitride platform Open
Nonlinear optical effects including stimulated Brillouin scattering (SBS) and four-wave mixing (FWM) play an important role in microwave photonics, optical frequency combs, and quantum photonics. Harnessing SBS and FWM in a low-loss and ve…
View article: Guided-acoustic stimulated Brillouin scattering in silicon nitride photonic circuits
Guided-acoustic stimulated Brillouin scattering in silicon nitride photonic circuits Open
Coherent optomechanical interaction known as stimulated Brillouin scattering (SBS) can enable ultrahigh resolution signal processing and narrow-linewidth lasers. SBS has recently been studied extensively in integrated waveguides; however, …
View article: Ultrahigh Dynamic Range and Low Noise Figure Programmable Integrated Microwave Photonic Filter
Ultrahigh Dynamic Range and Low Noise Figure Programmable Integrated Microwave Photonic Filter Open
Microwave photonics (MWP) has adopted a number of important concepts and technologies over the recent pasts, including photonic integration, versatile programmability, and techniques for enhancing key radio frequency performance metrics su…
View article: Ultrahigh Dynamic Range and Low Noise Figure Programmable Integrated Microwave Photonic Filter
Ultrahigh Dynamic Range and Low Noise Figure Programmable Integrated Microwave Photonic Filter Open
Microwave photonics (MWP) has adopted a number of important concepts and technologies over the recent pasts, including photonic integration, versatile programmability, and techniques for enhancing key radio frequency performance metrics su…
View article: Stimulated Brillouin Scattering Microwave Photonic Notch Filter in Silicon Nitride
Stimulated Brillouin Scattering Microwave Photonic Notch Filter in Silicon Nitride Open
We show the first all silicon nitride microwave photonic notch filter using stimulated Brillouin scattering (SBS). The filter has a rejection of more than 60 dB, a linewidth of 1 GHz, and a tunable center frequency over 1 GHz.
View article: Guided-Acoustic Stimulated Brillouin Scattering in Silicon Nitride Photonic Circuits
Guided-Acoustic Stimulated Brillouin Scattering in Silicon Nitride Photonic Circuits Open
Coherent optomechanical interaction between acoustic and optical waves known as stimulated Brillouin scattering (SBS) can enable ultra-high resolution signal processing and narrow linewidth lasers important for next generation wireless com…
View article: Stimulated Brillouin Scattering in Multilayer Silicon Nitride Waveguides
Stimulated Brillouin Scattering in Multilayer Silicon Nitride Waveguides Open
We investigated stimulated Brillouin scattering (SBS) in two different multilayer silicon nitride waveguides. We report the first observation of SBS in multilayer silicon nitride waveguides. The gain coefficient measured is 0.16m−1W−1 in o…
View article: Reconfigurable Double-Injection Ring Resonator for Integrated Microwave Photonic Signal Processing
Reconfigurable Double-Injection Ring Resonator for Integrated Microwave Photonic Signal Processing Open
Integrated microwave photonic (MWP) signal processor relies on the integration of multiple optical circuits, advanced functionalities, and high-performance for radio frequency (RF) applications. In this paper, we experimentally investigate…
View article: Integrated Microwave Photonic Spectral Shaping For Linearization and Spurious-Free Dynamic Range Enhancement
Integrated Microwave Photonic Spectral Shaping For Linearization and Spurious-Free Dynamic Range Enhancement Open
Integrated microwave photonics (MWP) is a fast growing area where high frequency microwave signals are processed in the optical domain, merging key advantages of both microwave photonics and photonic integrated circuits (PICs) technologies…
View article: On-chip programmable microwave photonic filter with an integrated optical carrier processor
On-chip programmable microwave photonic filter with an integrated optical carrier processor Open
We demonstrate a programmable microwave photonic bandpass filter with a rectangular frequency response and a reconfigurable spectral resolution. We achieved these features through dual-sidebands processing of a phase modulated signal using…