The Experts below are selected from a list of 5904 Experts worldwide ranked by ideXlab platform

Tarun Kumar Gangopadhyay - One of the best experts on this subject based on the ideXlab platform.

  • prospects for Fibre bragg gratings and fabry perot interferometers in Fibre optic vibration sensing
    Sensors and Actuators A-physical, 2004
    Co-Authors: Tarun Kumar Gangopadhyay
    Abstract:

    Vibration monitoring of machinery is reducing the overall operating costs of industrial plants. Conventional vibration sensors, based on capacitive or piezoelectric principles, are limited in application due to the problem of electrical isolation. Fibre-optic based instrumentation is thus an attractive alternative method of vibration measurement in the vicinity of electrical substation. This paper discusses several techniques of vibration sensing using Optical Fibre Technology and assesses their potential for use on electromechanical equipment. Firstly an overview of sensor based on In-Fibre Bragg Gratings is presented, and its potential for the measurement of strain and vibration is assessed. Secondly, vibration sensing using Fibre-optic intensity-based measurement is presented and then Fabry-Perot Interferometer (FPI) for vibration sensing is critically reviewed. Of these, the FPI is the most attractive since it can easily be configured within a reflective Fibre-optic probe. However, reported FPI sensors have been highly sensitive to measurement errors caused by mechanical vibration, temperature, and acoustic waves. This paper reviews technological developments of FPI to vibration sensing in extreme electromechanical environments and also for non-contact measurement. Finally this paper presents an overview of dual-wavelength technique for assessment of vibration signature.

Gustavo Lima - One of the best experts on this subject based on the ideXlab platform.

  • Quantum information processing with space-division multiplexing Optical Fibres
    Communications Physics, 2020
    Co-Authors: Guilherme B. Xavier, Gustavo Lima
    Abstract:

    The Optical Fibre is an essential tool for our communication infrastructure since it is the main transmission channel for Optical communications. The latest major advance in Optical Fibre Technology is space-division multiplexing, where new Fibre designs and components establish multiple co-existing data channels based on light propagation over distinct transverse Optical modes. Simultaneously, there have been many recent developments in the field of quantum information processing, with novel protocols and devices in areas such as computing and communication. Here, we review recent results in quantum information based on space-division multiplexing Optical Fibres, and discuss new possibilities based on this Technology. Quantum information processing holds promise to achieve more secure data transfer in the current network of telecommunication Fibres. Here, the authors review recent works implementing spatial division multiplexing in Optical Fibres and discuss their potential for quantum communication in classical networks.

  • quantum information processing with space division multiplexing Optical Fibres
    arXiv: Quantum Physics, 2019
    Co-Authors: Guilherme B. Xavier, Gustavo Lima
    Abstract:

    The Optical Fibre is an essential tool for our communication infrastructure since it is the main transmission channel for Optical communications. The latest major advance in Optical Fibre Technology is spatial division multiplexing (SDM), where new Fibre designs and components establish multiple co-existing data channels based on light propagation over distinct transverse Optical modes. Simultaneously, there have been many recent developments in the field of quantum information processing (QIP), with novel protocols and devices in areas such as computing, communication and metrology. Here, we review recent works implementing QIP protocols with SDM Optical Fibres, and discuss new possibilities for manipulating quantum systems based on this Technology.

Lima Gustavo - One of the best experts on this subject based on the ideXlab platform.

  • Quantum information processing with space-division multiplexing Optical Fibres
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Xavier, Guilherme B., Lima Gustavo
    Abstract:

    The Optical Fibre is an essential tool for our communication infrastructure since it is the main transmission channel for Optical communications. The latest major advance in Optical Fibre Technology is spatial division multiplexing (SDM), where new Fibre designs and components establish multiple co-existing data channels based on light propagation over distinct transverse Optical modes. Simultaneously, there have been many recent developments in the field of quantum information processing (QIP), with novel protocols and devices in areas such as computing, communication and metrology. Here, we review recent works implementing QIP protocols with SDM Optical Fibres, and discuss new possibilities for manipulating quantum systems based on this Technology.Comment: Originally submitted version. Please see published version for improved layout, new tables and updated references following review proces

  • Quantum information processing with space-division multiplexing Optical Fibres
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Xavier, Guilherme B., Lima Gustavo
    Abstract:

    The Optical Fibre is an essential tool for our communication infrastructure since it is the main transmission channel for Optical communications. The latest major advance in Optical Fibre Technology is space-division multiplexing, where new Fibre designs and components establish multiple co-existing data channels based on light propagation over distinct transverse Optical modes. Simultaneously, there have been many recent developments in the field of quantum information processing, with novel protocols and devices in areas such as computing and communication. Here, we review recent results in quantum information based on space-division multiplexing Optical Fibres, and discuss new possibilities based on this Technology.Funding: G.X. acknowledges Ceniit Linköping University, the Swedish Research Council (VR 2017-04470) and the Knut and Alice Wallenberg Foundation for financial support. G.L. acknowledges the support of Fondecyt 1160400, and Millennium Institute for Research in Optics, MIRO.

J K Sahu - One of the best experts on this subject based on the ideXlab platform.

  • flat Fibre and femtosecond laser Technology as a novel photonic integration platform for optofluidic based biosensing devices and lab on chip applications current results and future perspectives
    Sensors and Actuators B-chemical, 2015
    Co-Authors: Kyriacos Kalli, Christos Riziotis, Andreas Posporis, Christos Markos, Charalambos Koutsides, Sumiaty Ambran, A S Webb, Christopher Holmes, James C Gates, J K Sahu
    Abstract:

    Flat Optical Fibre Technology is a glass-based substrate Technology that has emerged recently, it offers a flexible and potentially very long, distributed sensing medium, whilst also having increased lateral and vertical dimensions; this allows for the development of Optical integrated circuits with the enhanced functionality promised by Optical chips. In this work we report on recent developments to highlight the incorporation of integrated structures on the surface and in the bulk volume of flat Fibres using femtosecond laser inscription. This fusion of two innovative technologies, and in particular the flexibility afforded by femtosecond laser inscription and micromachining, has led to the realisation of microfluidic channels, ring resonators, resonator disc, Mach-Zehnder and complex microfluidic designs in the surface of the Optical chip, whereas Bragg grating waveguides have been recorded in the bulk volume of the Optical chips. The flat-Fibre platform offers a unique degree of freedom by allowing surface and sub-surface devices to be integrated onto a single Optical chip with the potential for straightforward incorporation into integrated photonic circuits or opto-fluidic devices.

P R Chalker - One of the best experts on this subject based on the ideXlab platform.

  • residual strain measurement and impact response of Optical Fibre bragg grating sensors in Fibre metal laminates
    Smart Materials and Structures, 2001
    Co-Authors: K S C Kuang, Robert Kenny, Maurice Whelan, W J Cantwell, P R Chalker
    Abstract:

    Recently, Optical Fibre Bragg gratings have attracted a significant amount of attention as Optical Fibre sensors for measuring strain in composite structures. Indeed, the growth of Optical Fibre Technology has spurred the development of smart composites capable of measuring real-time internal strain within structures and an assortment of measurands such as temperature, pressure and chemical. In this paper, Optical Fibre Bragg grating sensors are embedded in a novel Fibre-metal laminate composite, to demonstrate the potential of Fibre Bragg grating sensors in measuring post-processing residual strain within a multimaterial structure. Repeated impact tests in the region of the grating have been performed to investigate the survivability of the sensor. In addition, post-impact sensor linearity tests have then been carried out to evaluate the sensor response to load.