Mohammad H Asghari

Summary

Country: Canada

Publications

  1. ncbi Self-referenced temporal phase reconstruction from intensity measurements using causality arguments in linear optical filters
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Matériaux et Télécommunications INRS EMT, Montreal, Quebec, Canada
    Opt Lett 37:3582-4. 2012
  2. ncbi Design of all-optical high-order temporal integrators based on multiple-phase-shifted Bragg gratings
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Materiaux et Telecommunications, Montreal, Quebec, Canada
    Opt Express 16:11459-69. 2008
  3. ncbi All-optical Hilbert transformer based on a single phase-shifted fiber Bragg grating: design and analysis
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, , , , Canada
    Opt Lett 34:334-6. 2009
  4. ncbi High-order passive photonic temporal integrators
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, , , , H5A 1K6 Canada
    Opt Lett 35:1191-3. 2010
  5. ncbi Complex-field measurement of ultrafast dynamic optical waveforms based on real-time spectral interferometry
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Materiaux et Telecommunications, Montreal, Quebec H5A 1K6, Canada
    Opt Express 18:16526-38. 2010
  6. ncbi New design for photonic temporal integration with combined high processing speed and long operation time window
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Matériaux et Télécommunications INRS EMT, Montreal, Quebec, Canada
    Opt Express 19:425-35. 2011
  7. ncbi Photonic temporal integration of broadband intensity waveforms over long operation time windows
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Materiaux et Telecommunications, Montreal, Quebec, Canada
    Opt Lett 36:3557-9. 2011

Detail Information

Publications7

  1. ncbi Self-referenced temporal phase reconstruction from intensity measurements using causality arguments in linear optical filters
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Matériaux et Télécommunications INRS EMT, Montreal, Quebec, Canada
    Opt Lett 37:3582-4. 2012
    ..Very few restrictions need to be imposed on the optical filter response to ensure an unambiguous phase reconstruction. The filter can be specifically designed to minimize the noise influence on the measurement process...
  2. ncbi Design of all-optical high-order temporal integrators based on multiple-phase-shifted Bragg gratings
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Materiaux et Telecommunications, Montreal, Quebec, Canada
    Opt Express 16:11459-69. 2008
    ..Our simulations show that the proposed approach can provide optical operation bandwidths in the tens-of-GHz regime using readily feasible photo-induced fiber BG structures...
  3. ncbi All-optical Hilbert transformer based on a single phase-shifted fiber Bragg grating: design and analysis
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, , , , Canada
    Opt Lett 34:334-6. 2009
    ..All-optical Hilbert transformers capable of processing arbitrary optical waveforms with bandwidths up to a few hundreds of gigahertz can be implemented using feasible FBGs...
  4. ncbi High-order passive photonic temporal integrators
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, , , , H5A 1K6 Canada
    Opt Lett 35:1191-3. 2010
    ..Accurate and efficient first- and second-order temporal integrations of ultrafast complex-field optical signals (with temporal features as fast as approximately 2.5ps) are successfully demonstrated using the fabricated FBG devices...
  5. ncbi Complex-field measurement of ultrafast dynamic optical waveforms based on real-time spectral interferometry
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Materiaux et Telecommunications, Montreal, Quebec H5A 1K6, Canada
    Opt Express 18:16526-38. 2010
    ..This performance is achieved at a measurement update rate of approximately 17 MHz, i.e. at least one thousand times faster than with any previous single-shot complex-field THz-bandwidth optical signal characterization method...
  6. ncbi New design for photonic temporal integration with combined high processing speed and long operation time window
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Matériaux et Télécommunications INRS EMT, Montreal, Quebec, Canada
    Opt Express 19:425-35. 2011
    ....
  7. ncbi Photonic temporal integration of broadband intensity waveforms over long operation time windows
    Mohammad H Asghari
    Institut National de la Recherche Scientifique Energie, Materiaux et Telecommunications, Montreal, Quebec, Canada
    Opt Lett 36:3557-9. 2011
    ..Using this setup, we experimentally achieve accurate time integration of intensity signals with ~36 GHz bandwidths over an operation time window of ~4 ns, corresponding to a processing time-bandwidth product of >144...