The Experts below are selected from a list of 11076 Experts worldwide ranked by ideXlab platform

Benjamin J Eggleton - One of the best experts on this subject based on the ideXlab platform.

  • tailoring of the brillouin gain for on chip widely tunable and reconfigurable broadband microwave photonic Filters
    2016
    Co-Authors: Amol Choudhary, Iman Aryanfar, Shayan Shahnia, Blair Morrison, Khu Vu, Stephen J Madden, Barry Lutherdavies, David Marpaung, Benjamin J Eggleton
    Abstract:

    An unprecedented Brillouin gain of 44 dB in a photonic chip enables the realization of broadly tunable and reconfigurable integrated microwave photonic Filters. More than a decade bandwidth reconfigurability from 30 up to 440 MHz, with a passband ripple <1.9  dB is achieved by tailoring the Brillouin pump. The filter central frequency is continuously tuned up to 30 GHz with no degradation of the passband response, which is a major improvement over Electronic Filters. Furthermore, we demonstrate pump tailoring to realize multiple bandpass Filters with different bandwidths and central frequencies, paving the way for multiple on-chip microwave Filters and channelizers.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2015
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high-performance Filters. Here we show the first chip-based MWP bandstop filter with ultrahigh suppression, high resolution in the megahertz range, and 0–30 GHz frequency tuning. This record performance was achieved using an ultralow Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2014
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high performance Filters. Here we show the first chip-based MWP band-stop filter with ultra-high suppression, high resolution in the MHz range, and 0-30 GHz frequency tuning. This record performance was achieved using an ultra-low Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

David Marpaung - One of the best experts on this subject based on the ideXlab platform.

  • tailoring of the brillouin gain for on chip widely tunable and reconfigurable broadband microwave photonic Filters
    2016
    Co-Authors: Amol Choudhary, Iman Aryanfar, Shayan Shahnia, Blair Morrison, Khu Vu, Stephen J Madden, Barry Lutherdavies, David Marpaung, Benjamin J Eggleton
    Abstract:

    An unprecedented Brillouin gain of 44 dB in a photonic chip enables the realization of broadly tunable and reconfigurable integrated microwave photonic Filters. More than a decade bandwidth reconfigurability from 30 up to 440 MHz, with a passband ripple <1.9  dB is achieved by tailoring the Brillouin pump. The filter central frequency is continuously tuned up to 30 GHz with no degradation of the passband response, which is a major improvement over Electronic Filters. Furthermore, we demonstrate pump tailoring to realize multiple bandpass Filters with different bandwidths and central frequencies, paving the way for multiple on-chip microwave Filters and channelizers.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2015
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high-performance Filters. Here we show the first chip-based MWP bandstop filter with ultrahigh suppression, high resolution in the megahertz range, and 0–30 GHz frequency tuning. This record performance was achieved using an ultralow Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2014
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high performance Filters. Here we show the first chip-based MWP band-stop filter with ultra-high suppression, high resolution in the MHz range, and 0-30 GHz frequency tuning. This record performance was achieved using an ultra-low Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

Barry Lutherdavies - One of the best experts on this subject based on the ideXlab platform.

  • tailoring of the brillouin gain for on chip widely tunable and reconfigurable broadband microwave photonic Filters
    2016
    Co-Authors: Amol Choudhary, Iman Aryanfar, Shayan Shahnia, Blair Morrison, Khu Vu, Stephen J Madden, Barry Lutherdavies, David Marpaung, Benjamin J Eggleton
    Abstract:

    An unprecedented Brillouin gain of 44 dB in a photonic chip enables the realization of broadly tunable and reconfigurable integrated microwave photonic Filters. More than a decade bandwidth reconfigurability from 30 up to 440 MHz, with a passband ripple <1.9  dB is achieved by tailoring the Brillouin pump. The filter central frequency is continuously tuned up to 30 GHz with no degradation of the passband response, which is a major improvement over Electronic Filters. Furthermore, we demonstrate pump tailoring to realize multiple bandpass Filters with different bandwidths and central frequencies, paving the way for multiple on-chip microwave Filters and channelizers.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2015
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high-performance Filters. Here we show the first chip-based MWP bandstop filter with ultrahigh suppression, high resolution in the megahertz range, and 0–30 GHz frequency tuning. This record performance was achieved using an ultralow Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2014
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high performance Filters. Here we show the first chip-based MWP band-stop filter with ultra-high suppression, high resolution in the MHz range, and 0-30 GHz frequency tuning. This record performance was achieved using an ultra-low Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

Blair Morrison - One of the best experts on this subject based on the ideXlab platform.

  • tailoring of the brillouin gain for on chip widely tunable and reconfigurable broadband microwave photonic Filters
    2016
    Co-Authors: Amol Choudhary, Iman Aryanfar, Shayan Shahnia, Blair Morrison, Khu Vu, Stephen J Madden, Barry Lutherdavies, David Marpaung, Benjamin J Eggleton
    Abstract:

    An unprecedented Brillouin gain of 44 dB in a photonic chip enables the realization of broadly tunable and reconfigurable integrated microwave photonic Filters. More than a decade bandwidth reconfigurability from 30 up to 440 MHz, with a passband ripple <1.9  dB is achieved by tailoring the Brillouin pump. The filter central frequency is continuously tuned up to 30 GHz with no degradation of the passband response, which is a major improvement over Electronic Filters. Furthermore, we demonstrate pump tailoring to realize multiple bandpass Filters with different bandwidths and central frequencies, paving the way for multiple on-chip microwave Filters and channelizers.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2015
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high-performance Filters. Here we show the first chip-based MWP bandstop filter with ultrahigh suppression, high resolution in the megahertz range, and 0–30 GHz frequency tuning. This record performance was achieved using an ultralow Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

  • low power chip based stimulated brillouin scattering microwave photonic filter with ultrahigh selectivity
    2014
    Co-Authors: David Marpaung, Blair Morrison, Barry Lutherdavies, Mattia Pagani, Ravi Pant, Dukyong Choi, Steve Madden, Benjamin J Eggleton
    Abstract:

    Highly selective and reconfigurable microwave Filters are of great importance in radio-frequency signal processing. Microwave photonic (MWP) Filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than Electronic Filters. However, all MWP Filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP Filters, blocking the path to compact, high performance Filters. Here we show the first chip-based MWP band-stop filter with ultra-high suppression, high resolution in the MHz range, and 0-30 GHz frequency tuning. This record performance was achieved using an ultra-low Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.

Ian O'connor - One of the best experts on this subject based on the ideXlab platform.

  • Frequency Design of Lossless Passive Electronic Filters: A State-Space Formulation of the Direct Synthesis Approach
    2020
    Co-Authors: Arthur Perodou, Anton Korniienko, Gérard Scorletti, Mykhailo Zarudniev, Jean-baptiste David, Ian O'connor
    Abstract:

    This paper deals with the frequency design of loss-less passive Electronic Filters under magnitude constraints. With the huge increase in design complexity for mobile applications, new systematic and efficient methods are required. This paper focuses on the direct synthesis approach, an historical design approach that has not been recently updated. It consists in directly synthesizing the LC values of a pre-specified circuit until the spectral mask is satisfied. While beneficial in practice, this approach typically leads to an important computational time and requires an initial guess to reduce it. Based on recent developments of the System and Control community, that led to efficient methods for system design, the direct synthesis approach is revisited. To achieve this, the port-Hamiltonian Differential Algebraic Equation (pHDAE) representation, that particularly fits the design problem, is introduced. A synthesis method is then developed, leading to solve an optimization problem of moderate complexity. For particular cases, this complexity happens to be remarkably low. Based on this observation, a second method reveals how to obtain such complexity for the more general case, using an original combination between the pHDAE and the LFT representations. Finally, a numerical example shows the validity and illustrates the benefits of this work.