A5083208615- Photonic and Optical Devices
- Photonic Crystals and Applications
- Neural Networks and Reservoir Computing
- Advanced Fiber Laser Technologies
- Plasmonic and Surface Plasmon Research
- Adaptive optics and wavefront sensing
- Optical Coatings and Gratings
- Advanced Fiber Optic Sensors
- Optical Coherence Tomography Applications
- Advanced Memory and Neural Computing
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Nanofabrication and Lithography Techniques
- Electrowetting and Microfluidic Technologies
- Advanced MEMS and NEMS Technologies
- Mechanical and Optical Resonators
- Neural dynamics and brain function
- Advanced Fluorescence Microscopy Techniques
University of Shanghai for Science and Technology
2021-2024
RMIT University
2016-2022
MIT University
2021
Centre for Ultrahigh Bandwidth Devices for Optical Systems
2016-2017
Optical machine learning has emerged as an important research area that, by leveraging the advantages inherent to optical signals, such parallelism and high speed, paves way for a future where hardware can process data at speed of light. In this work, we present devices processing in form single-layer nanoscale holographic perceptrons trained perform inference tasks. We experimentally show functionality these passive example decryptors single or whole classes keys through symmetric...
Abstract Retrieving the pupil phase of a beam path is central problem for optical systems across scales, from telescopes, where information allows aberration correction, to imaging near-transparent biological samples in contrast microscopy. Current retrieval schemes rely on complex digital algorithms that process data acquired precise wavefront sensors, reconstructing at great expense computational resources. Here, we present compact optical-electronic module based multi-layered diffractive...
Abstract The theoretical analysis and experimental demonstration of a waveguide resonator are presented based on bound states in the continuum an integrated photonic chip platform. has form collimated beam light which is confined vertically transverse electric (TE) mode silicon slab. state discrete transverse‐magnetic (TM)‐like ridge coupling between slab modes results single sharp resonance at wavelength where they phase match. This phenomenon experimentally demonstrated using...
We present SU-8 polymer waveguide grating couplers for TE mode with enhanced refractive index contrast by employing air as upper and lower cladding layer. Numerical simulations predict a coupling loss of 4.9 dB, indicating efficiency 32% at maximum spectral response 1550 nm. Based on lamination method, air-suspended were successfully fabricated characterized. Due to current limitations in the fabrication process, perturbation experimental is weaker than original simulation. However,...
We present a method to bond unstructured and structured SU-8 films down sub-micron thicknesses onto microchannels fabricated in KMPR using flexible polydimethylsiloxane (PDMS) stamp. By exploiting differently casted PDMS stamps, 3D microfluidic channel networks, air-suspended photonic devices optofluidic structures have been fabricated. First, of are patterned by photolithography an film is spin coated prepared The stamp then placed on top the layer cross-linked applying sufficient heat...
Photonic resonators based on bound states in the continuum are attractive for sensing and telecommunication applications, as they have potential to achieve ultra-high Q-factor a compact footprint. Recently, ridge – leaky mode state been demonstrated scalable photonic integrated circuit platform. However, high thus far not achieved. In this contribution, we investigate influence of excitation beam width optical losses spectral response resonators. We show that practical space required is...
Integrated photonic resonators based on bound states in the continuum (BICs) silicon-on-insulator (SOI) platform have potential for novel, mass-manufacturable resonant devices. While nature of BIC-based ridge requires to be extended (axial) propagation direction mode, requirement excitation from quasi-continuum extends resonator structures also lateral dimensions, resulting large device footprints. To overcome this footprint requirement, we investigate translation into a guided mode system...
Nanoscale plasmonic structures can offer unique functionality due to extreme sub-wavelength optical confinement, but the realization of complex circuits is hampered by high propagation losses. Hybrid approaches potentially overcome this limitation, only few practical based on either single or element arrays nanoantennas dielectric nanowire have been experimentally demonstrated. In paper, we demonstrate a two dimensional hybrid photonic crystal interfaced with standard silicon platform. Off...
Since their conception as Diffractive Deep Neural Networks (D2NNs) by Lin in 2018, the field of optical information processing with sub-wavelength patterned thin scatterers has raised significant attention, it not only allows for leveraging inherent advantages signals, such parallelism and high speed, but also convenient its native domain. The nanoprinting diffractive networks two-photon polymerization methods is interest, fabrication inference systems record-high neurons densities, targeted...
We numerically investigate the performance of optical implementations deep neural network for complex field data processing in form multi-layer nanoscale diffractive networks, trained to perform image classification tasks. discuss parameter optimization and limitations that fabrication errors put on such direct phase retrieval systems. The networks studied here may have transformative impact adaptive optics, sensing be crucial development robust generalized quantitative imaging methods.
Waveguide-integrated plasmonic crystals are fabricated and characterized using a hybrid platform consisting of silver nanogap tilings over the surface SOI photonic chip. Stop-band hot-spots such crystal have been demonstrated.
A new type of resonance in silicon photonics is demonstrated, achieved by coupling between a continuum TE slab modes to discrete TM mode ridge create single sharp resonance. © 2019 The Author(s)
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text T. G. Nguyen, Ren, S. Schoenhardt, M. Knoerzer, A. Boes, and Mitchell, "New Resonance Behavior based Bound States in the Continuum a Silicon Photonic Waveguide Platform," Conference Lasers Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2019), paper STh1H.7. Export BibTex Endnote (RIS) HTML Plain alert Save article
We present aberration detectors based on multi-layered perceptrons printed by two-photon nanolithography. Through all-optical inference, the can collect phase information from a point spread function performing direct detection in single step.