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Novel directions in Raman amplifier research

Novel directions in Raman amplifier research

引用

International Conference on Information, Communications and Signal Processing

作者： V. Kalavally M. Premaratne I. Rukhlenko T. Win P. Shum M. Tang Department of Electrical and Compute Systems Engineering School of Engineering Monash University Bandar Sunway Selangor Darul Ehsan Malaysia Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia School of Electrical and Electronics Engineering Nanyang Technological University Singapore Singapore

ISBN: (纸本)9781424446568

Raman amplifiers provide a simple and yet powerful platform for optical amplification needs in modern optical communication networks. This paper reviews recent progress in Raman amplifier research and highlights some non-conventional future of the field. Although the low-noise and wavelength-independent gain properties of Raman amplifiers have been long exploited in optical communication networks, researchers strive to tap into the huge potential of non-linear optics to improve reach and performance. Alternative approaches used to enhance the quality of Raman amplified networks such as the use of novel pumping schemes that can ensure uniformity in gain and noise performance are discussed. Finally, the advances in research on Raman amplification in monolithically integrated silicon waveguides which should fuel wide deployment in the coming years are presented.

关键词： Stimulated emission Optical amplifiers Semiconductor optical amplifiers Optical fiber communication Performance gain Optical noise Optical waveguides Power amplifiers Low-noise amplifiers Nonlinear optics

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Multiple scale analysis of semiconductor amplifiers

Multiple scale analysis of semiconductor amplifiers

引用

International Conference on advanced Optoelectronics and Lasers (CAOL)

作者： Malin Premaratne Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia

Short-pulse propagation in optical amplifiers has been widely studied for applications in optical signal processing and optical communications areas. Even though it is possible to integrate differential equations numerically, such implementations may not provide adequate insight into the device operation. We propose a systematic way to construct analytical solutions under pulsed conditions and show excellent agreement with numerically integrated results. Our approach makes use of the multiple-scale technique in which different time scales associated with physical processors are cleverly used to partition amplifier response to different regions where analytical solution can be found using simple techniques.

关键词： Semiconductor optical amplifiers Pulse amplifiers Optical pulses Optical pulse shaping Stimulated emission Optical signal processing Optical amplifiers Nonlinear optics Space vector pulse width modulation Computer crime

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Multiple-scale Analysis of Optical Amplifiers

Multiple-scale Analysis of Optical Amplifiers

引用

IEEE PhotonicsGlobal@Singapore, IPGC

作者： Malin Premaratne Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia

关键词： Stimulated emission Semiconductor optical amplifiers Optical amplifiers Pulse amplifiers Optical pulses Optical signal processing Space vector pulse width modulation Optical pulse shaping Optical computing Atom optics

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Simultaneous estimation of optical flow and object state: A modified approach to optical flow calculation

Simultaneous estimation of optical flow and object state: A ...

引用

IEEE International Conference on Networking, Sensing and Control

作者： Pubudu N Pathirana Allan E.K. Lim John Carminati Malin Premaratne School of Engineering and Information Technology Deakin University Geelong Australia Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Monash University Clayton VIC Australia

Differential optical flow methods are widely used within the computer vision community. They are classified as being either local, as in the Lucas-Kanade method, or global, as in the Horn-Schunck technique. As the physical dynamics of an object is inherently coupled into the behavior of its image in the video stream, in this paper, we use such dynamic parameter information in calculating optical flow when tracking a moving object using a video stream. Indeed, we use a modified error function in the minimization that contains physical parameter information. Further, the refined estimates of optical flow is used for better estimation of the physical parameters of the object in the simultaneous estimation of optical flow and object state(SEOS).

关键词： Image motion analysis State estimation Optical sensors Optical filters Optical noise Parameter estimation Nonlinear optics Streaming media Optical fiber networks Computer vision

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Modeling of Light Propagation through Biological Tissues: A Novel Approach

Modeling of Light Propagation through Biological Tissues: A ...

引用

Frontiers in the Convergence of Bioscience and Information Technologies, FBIT

作者： Chintha C. Handapangoda Malin Premaratne Leslie Yeo James Friend Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia Micro/Nanophysics Research Laboratory (MNRL) Department of Mechanical Engineering Monash University Clayton VIC Australia

An efficient numerical technique for modeling biological tissues using the radiative transfer equation is presented. Time dependence of the transient radiative transfer equation is approximated using Laguerre expansion. Azimuthal angle is discretized using the discrete ordinates method and the resulting set of ordinary differential equations is solved using the Runge-Kutta-Felhberg method.

关键词： Biological system modeling Optical propagation Biological tissues Equations Biology computing Laboratories Numerical models Azimuthal angle Optical scattering Cancer detection

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Challenges in Photonic System simulation

Challenges in Photonic System Simulation

引用

International Conference on Numerical simulation of Optoelectronic Devices, (NUSOD)

作者： Malin Premaratne Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia

A comprehensive analysis on the requirements and challenges of next generation photonic system simulator technology for hybrid hierarchical optical networks is presented. Key challenges need to be met by simulator des... 详细信息

关键词： Optical fiber networks Optical design Traffic control Circuit simulation Computational modeling Telecommunication traffic Analytical models Electronics industry Optical sensors Image motion analysis

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Cost Optimal Strategies for Placement of Amplifiers in a Point to Point Optical Link

Cost Optimal Strategies for Placement of Amplifiers in a Poi...

引用

International Conference on Numerical simulation of Optoelectronic Devices, (NUSOD)

作者： Mohammad Amin Dallaali Malin Premaratne Arthur J. Lowery Advanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia

In this paper, we consider the optical power level for developing a full constrained search algorithm to find the optimal cost allocation of a chain of amplifiers. We show how the algorithm is improved when different ... 详细信息

关键词： Cost function Semiconductor optical amplifiers Optical amplifiers Optical fiber communication Optical fiber amplifiers Optical attenuators Repeaters Stimulated emission High power amplifiers Optical computing

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Crosstalk in counter-pumped distributed Raman amplifiers with DTDM pumping

Crosstalk in counter-pumped distributed Raman amplifiers wit...

引用

IEEE International Workshop on Electronic Design, Test and Applications (DELTA)

作者： V. Kalavally M. Premaratne T. Win Department of Electrical and Computer Systems Engineering Monash University Malaysia Petaling Jaya Selangor Malaysia Department of Electrical and Computer Systems Engineering Advanced Computing and Simulation Laboratory (AXL) Victoria Australia

A crosstalk effect in counter-pumped distributed Raman amplifiers (DRAs) with discrete time-division multiplexed (DTDM) pumping is investigated using numerical modeling. We show that the pump repetition frequency has an impact on the pump mediated cross modulation between two channels. Crosstalk effects between channels are shown to be worse in the case of DTDM pumping in comparison with continuous wave (CW) pumping at lower pump repetition frequencies

关键词： Crosstalk Stimulated emission Distributed amplifiers Frequency Time division multiplexing Laser excitation Pump lasers Optical noise Laser noise Systems engineering and theory

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Pulse Propagation in Polarization-sensitive Semiconductor Optical Amplifiers

Pulse Propagation in Polarization-sensitive Semiconductor Op...

引用

The Joint International Conference on Optical Internet and Next Generation Network (COIN-NGNCON)

作者： Bipin Sankar Gopalakrishnapillai Malin Premaratne David Abramson Ampalavanapillai Nirmalathas Christina Lim Victoria Research Laboratory CUBIN Department of Electrical and Electronic Engineering University of Melbourne VIC Australia Advanced computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC Australia Faculty ofInformation Technology Monash University Clayton VIC Australia

We derive analytical expressions for modal gain, phase evolution, energy gain along a polarization-sensitive semiconductor optical amplifier that have a range of signal processing applications. The analytical results ... 详细信息

关键词： Optical pulses Pulse amplifiers Optical propagation Optical polarization Semiconductor optical amplifiers Tellurium Optical signal processing Optical wavelength conversion Optical sensors Pulse measurements

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Supervisory signal transmission in distributed Raman amplifiers

Supervisory signal transmission in distributed Raman amplifi...

引用

IEEE International Workshop on Electronic Design, Test and Applications (DELTA)

作者： Lau Bei Yer V. Kalavally M. Premaratne Tin Win Department of Electrical and Computer Systems Engineering School of Engineering Monash University Malaysia Selangor Malaysia Department of Electrical and Computer Systems School of Engineering Monash University Malaysia Selangor Malaysia Advanced Computing and Simulation Laboratory AXL Department of Electrical and Computer Systems Engineering Faculty of Engineering Monash University VIC Australia

Design parameters of a supervisory (SV) system intended for a distributed Raman amplifier (DBA) is investigated theoretically. The pump is low frequency modulated to transmit supervisory information which forms part of the fault management system in a Raman amplified fiber optic network. Issues regarding modulation frequency of the SV signal and its effect on the integrity of the signal are studied. Power penalty issues due to introduction of the SV signal in the optical network are also studied. These theoretical studies are based on numerical solution of coupled propagation equations for counter-pumped DRA.

关键词： Stimulated emission Distributed amplifiers Optical transmitters Repeaters Frequency Optical pumping Optical amplifiers Design engineering Distributed computing Optical propagation

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