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光学学报 2003年第S1期23卷 421-422页

作者： An Vu Tran Chang-Joon Chae Rodney S. Tucker australian photonics cooperative research centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne Vic. 3010 AustraliaAustralian Photonics Cooperative Research Centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne Vic. 3010 AustraliaAustralian Photonics Cooperative Research Centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne Vic. 3010 Australia

We report a flexible all-optical gain controlled bidirectional optical amplifier. The device achieves constant gain and low noise figure over a large input power range. Moreover, the device removes Rayleigh backscatte... 详细信息

关键词： ASE of in for BOA flexible A flexible and high-performance bidirectional optical amplifier with all-optical gain control using ASE noise path through multi-port circulators OC with high

Optimization of Generation and Detection of WDM Signals with Advanced Modulation Formats

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光学学报 2003年第S1期23卷 560-561页

作者： Sarah Dods australian photonics cooperative research centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne Victoria 3010 Australia

This paper presents optimal generation and detection of wavelength division multiplexed (WDM) signals with advanced modulation formats. We investigate the relative phase alignment between phase modulation and data bits for chirped return-to-zero (CRZ) signals, and the frequency offset between the RZ carrier and various optical filters for vestigial side band (VSB)-RZ signals.

关键词： WDM on VSB of with

Assessing the impact of conceptual mineral systems uncertainty on prospectivity predictions

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Geoscience Frontiers 2022年第6期13卷 182-207页

作者： Mark D Lindsay Agnieszka M.Piechocka Mark W Jessell Richard Scalzo Jeremie Giraud Guillaume Pirot Edward Cripps Commonwealth Scientific and Industrial research Organisation Mineral Resources Australian Resources Research CentreWA 6151Australia Mineral Exploration cooperative research centre Centre for Exploration TargetingSchool of Earth SciencesThe University of Western AustraliaPerthWA 6009Australia ARC centre for Data Analytics for Resources and Environments(DARE) Perth and SydneyAustralia University of Sydney School of Mathematics and StatisticsSydneyAustralia Universitéde Lorraine GeoRessourcesCNRS54000 NancyFrance The University of Western Australia Department of Mathematics and StatisticsPerthAustralia

The past two decades have seen a rapid adoption of artificial intelligence methods applied to mineral exploration. More recently, the easier acquisition of some types of data has inspired a broad literature that has examined many machine learning and modelling techniques that combine exploration criteria,or ’features’, to generate predictions for mineral prospectivity. Central to the design of prospectivity models is a ’mineral system’, a conceptual model describing the key geological elements that control the timing and location of economic mineralisation. The mineral systems model defines what constitutes a training set, which features represent geological evidence of mineralisation, how features are engineered and what modelling methods are used. Mineral systems are knowledge-driven conceptual models, thus all parameter choices are subject to human biases and opinion so alternative models are ***, the effect of alternative mineral systems models on prospectivity is rarely compared despite the potential to heavily influence final predictions. In this study, we focus on the effect of conceptual uncertainty on Fe ore prospectivity models in the Hamersley region, Western Australia. Four important considerations are tested.(1) Five different supergene and hypogene conceptual mineral systems models guide the inputs for five forest-based classification prospectivity models model.(2) To represent conceptual uncertainty, the predictions are then combined for prospectivity model comparison.(3)Representation of three-dimensional objects as two-dimensional features are tested to address commonly ignored thickness of geological units.(4) The training dataset is composed of known economic mineralisation sites(deposits) as ’positive’ examples, and exploration drilling data providing ’negative’sampling locations. Each of the spatial predictions are assessed using independent performance metrics common to AI-based classification methods and subjected to geological pl

关键词： Uncertainty Modelling Prospectivity Economic geology Geological plausibility Forest-based classification

Comparison of Optical Transport Schemes for LMDS with Optical Fiber Backbone

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光学学报 2003年第S1期23卷 613-614页

作者： Christina Lim Ampalavanapillai Nirmalathas Dalma Novak Rodney Waterhouse australian photonics cooperative research centre Photonics Research Laboratory Dept. of Electrical &Electronic EngineeringThe University of Melbourne VIC 3010 AustraliaAustralian Photonics Cooperative Research Centre Photonics Research Laboratory Dept. of Electrical &Electronic EngineeringThe University of Melbourne VIC 3010 AustraliaCorvis Corporation Columbia MD 21046 USACorvis Corporation Columbia MD 21046 USA

We investigate and compare the performance of four optical transport schemes for distributing Local Multipoint Distribution Service (LMDS) signals using an optical fiber backbone.

关键词： for be on in Comparison of Optical Transport Schemes for LMDS with Optical Fiber Backbone OSSB of LMDS with

Nonlinear quantum spectroscopy with parity-time-symmetric integrated circuits

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photonics research 2022年第7期10卷 1763-1776页

作者： PAWAN KUMAR SINA SARAVI THOMAS PERTSCH FRANK SETZPFANDT ANDREY A.SUKHORUKOV Institute of Applied Physics Abbe Center of PhotonicsFriedrich Schiller University Jena07745 JenaGermany Fraunhofer Institute for Applied Optics and Precision Engineering 07745 JenaGermany research School of Physics Australian National UniversityCanberraACT 2601Australia ARC centre of Excellence for Transformative Meta-Optical Systems(TMOS) Australia

We propose a novel quantum nonlinear interferometer design that incorporates a passive parity-time(PT)-symmetric coupler sandwiched between two nonlinear sections where signal-idler photon pairs are *** PT symmetry enables efficient coupling of the longer-wavelength idler photons and facilitates the sensing of losses in the second waveguide exposed to analyte under investigation,whose absorption can be inferred by measuring only the signal intensity at a shorter wavelength where efficient detectors are readily ***,we identify a new phenomenon of sharp signal intensity fringe shift at critical idler loss values,which is distinct from the previously studied PT symmetry *** discuss how such unconventional properties arising from quantum interference can provide a route to enhancing the sensing of analytes and facilitate broadband spectroscopy applications in integrated photonic platforms.

关键词： interferometer waveguide quantum

Nonlinear chiral metaphotonics:a perspective

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Advanced photonics 2023年第6期5卷 17-28页

作者： Kirill Koshelev Pavel Tonkaev Yuri Kivshar australian National University Research School of PhysicsNonlinear Physics CenterCanberraAustralian Capital TerritoryAustralia

We review the physics and some applications of photonic structures designed for the realization of strong nonlinear chiroptical *** pay much attention to the recent strategy of utilizing different types of optical resonances in metallic and dielectric subwavelength structures and metasurfaces,including surface plasmon resonances,Mie resonances,lattice-guided modes,and bound states in the *** summarize earlier results and discuss more recent developments for achieving large circular dichroism combined with the high efficiency of nonlinear harmonic generation.

关键词： chirality metaphotonics dielectric metasurfaces plasmonic metasurfaces nonlinear optics bound states in the continuum

Spatially enabling Australia-the next decade

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International Journal of Digital Earth 2010年第1期3卷 91-107页

作者： Peter Woodgate australian cooperative research centre for Spatial Information 723 Swanston StreetUniversity of MelbourneMelbourneVIC 3010Australia

A strategy for the development of the australian spatial information industry called‘Spatially Enabling Australia’has recently been developed by the cooperative research centre for Spatial *** comprises three fundamental research programs and an integrated applications *** Program 1,‘Positioning,’underpins a full framework of continuous operating reference stations to ultimately enable all of continental Australia to be capable of realtime precise positioning services based on global navigation satellite *** Program 2,‘Automated Spatial Information Generation,’addresses complex processing of multiple remote sensing *** Program 3,‘Spatial Infrastructures,’helps form the foundation for development of an australian Spatial Marketplace that will make accessible vast amounts of government held data under a new licensing and access regime which supports combination with user-generated content from the mass *** three core programs are integrated with Program 4,‘Applications,’to support users from the Health,Defense and Security,Energy and Utilities,Urban Development,and Agriculture-Natural Resources-Climate Change *** 4 drives outputs from the three core research programs in sector-specific deployments for high *** will see a rapid acceleration of the use and value adding of information products and services that utilize spatial *** are considerable research and development challenges that must be met in order to achieve the strategic outcomes.

关键词： Australia spatial information positioning marketplace research

Novel Technique for All-Optical Clock Extraction Using Fiber Bragg Gratings

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光学学报 2003年第S1期23卷 597-598页

作者： M. Attygalle B. Ashton A. Nirmalathas L. Poladian W. Padden australian photonics cooperative research centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne VIC 3010 Australia.Optical Fibre Technology Centre APCRC University of Sydney NSW 1430 Australia.Australian Photonics Cooperative Research Centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne VIC 3010 Australia.Optical Fibre Technology Centre APCRC University of Sydney NSW 1430 Australia.Optical Fibre Technology Centre APCRC University of Sydney NSW 1430 Australia.

We demonstrate a simple passive technique, using phase shifted fibre Bragg gratings, for extraction of optical clock signals from RZ optical data signals. The generation of an optical clock signal at 12.5 GHz from a 12.5 Gbs RZ optical data stream is experimentally demonstrated with simulation of optical clock extraction at 10 GHz from 40 Gbs OTDM data streams.

关键词： for rate be data FBG Novel Technique for All-Optical Clock Extraction Using Fiber Bragg Gratings

Upstream Channel Utilization of CSMA/CD-Based Ethernet over Passive Optical Networks

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光学学报 2003年第S1期23卷 737-738页

作者： Elaine Wong Chang-Joon Chae australian photonics Cooperation research centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne VIC 3010 Australia.Australian Photonics Cooperation Research Centre Photonics Research Laboratory Department of Electrical and Electronic Engineering The University of Melbourne VIC 3010 Australia.

We demonstrate that an asynchronous CSMA/CD protocol with an optical loop-back star coupler can achieve high upstream channel utilizatbn in an Ethernet PON, readily supporting a large installed base of Ethernet 10Base... 详细信息

关键词： CSMA on as of Upstream Channel Utilization of CSMA/CD-Based Ethernet over Passive Optical Networks ONU OLT over CD

Evaluation of fatty acid metabolism and innate immunity interactions between commercial broiler, F1 layer × broiler cross and commercial layer strains selected for different growth potentials

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Journal of Animal Science and Biotechnology 2018年第1期9卷 156-166页

作者： Nicky-Lee Willson Rebecca E.A.Forder Rick G.Tearle Greg S.Nattrass Robert J.Hughes Philip I.Hynd School of Animal and Veterinary Sciences The University of Adelaide The australian Poultry and cooperative research centre University of New England Davies research centre School of Animal and Veterinary SciencesThe University of Adelaide South australian research and Development Institute(SARDI) Livestock and Farming Systems South australian research and Development Institute(SARDI) Pig and Poultry Production Institute

Background： The broiler industry has undergone intense genetic selection over the past 50 yr. resulting in improvements for growth and feed efficiency, however, significant variation remains for performance and growth traits. Production improvements have been coupled with unfavourable metabolic consequences, including immunological trade-offs for growth, and excess fat deposition. To determine whether interactions between fatty acid（FA） metabolism and innate immunity may be associated with performance variations commonly seen within commercial broiler flocks, total carcass lipid %, carcass and blood FA composition, as wel as genes involved with FA metabolism, immunity and cel ular stress were investigated in male birds of a broiler strain, layer strain and F1 layer × broiler cross at d 14 post hatch. Heterophil：lymphocyte ratios, relative organ weights and bodyweight data were also ***： Broiler bodyweight（n = 12） was four times that of layers（n = 12） by d 14 and had significantly higher carcass fat percentage compared to the cross（n = 6; P = 0.002） and layers（P = 0.017） which were not significantly different from each other（P = 0.523）. The carcass and whole blood FA analysis revealed differences in the FA composition between the three groups indicating altered FA metabolism, despite al being raised on the same diet. Genes associated with FA synthesis andβ-oxidation were upregulated in the broilers compared to the layers indicating a net overal increase in FA metabolism,which may be driven by the larger relative liver size as a percentage of bodyweight in the broilers. Genes involved in innate immunity such as TLR2 and TLR4, as wel as organel e stress indicators ERN1 and XBP1 were found to be nonsignificant, with the exception of high expression levels of XBP1 in layers compared to the cross and broilers. Additional y there was no difference in heterophil： lymphocytes between any of the ***： The results provide evidence that genetic selecti

关键词： Broiler Cel ular stress Fatty acid metabolism Innate immunity Layer Selection