Now showing items 1-20 of 63

  • Adaptative compensation on free-space optical coherent systems 

    Anzuola Valencia, Esdras; Belmonte Molina, Aniceto (2013)
    Conference report
    Restricted access - publisher's policy
    New, affordable adaptive compensation methods and technologies can help to improve substantially the performance and reliability of coherent optical systems in the atmosphere. The use of adaptive optics to mitigate ...
  • A measure of flow vorticity with twisted beams of light 

    Belmonte Molina, Aniceto; Rosales Guzmán, Carmelo; Pérez Torres, Juan (Curran, 2016)
    Conference report
    Restricted access - publisher's policy
    The measurement of vorticity, a parameter providing local measurements of rotation at every point in a flow, would greatly assist research fields as diverse as biology microfluidics, complex motions in the oceanic and ...
  • Analysis of a field conjugation adaptive array for coherent free-space optical links 

    Belmonte Molina, Aniceto; Kahn, Joseph M. (2010)
    Conference report
    Open Access
  • Analysis of wind turbines blockage on doppler weather radar beams 

    Belmonte Molina, Aniceto; Fabregas Canovas, Francisco Javier (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-07-01)
    Article
    Open Access
  • An inter-mountain optical-communications link experiment in Spain 

    Bará Temes, Francisco Javier; Comerón Tejero, Adolfo; Belmonte Molina, Aniceto (1990-03)
    Article
    Open Access
    In support of the Agency's SILEX optical-communications project, a first evaluation of the suitability of the Canary Islands (Spain) for an optical communications test range has been conducted. The low atmospheric attenuation ...
  • An overview of optical wireless communications 

    Ghassemlooy, Z.; Uysal, M.; Khalighi, M. A.; Ribeiro, V.; Moll, F.; Zvanovec, Z.; Belmonte Molina, Aniceto (Springer, 2016-01-01)
    Part of book or chapter of book
    Restricted access - publisher's policy
  • Approaching fundamental limits to free-space communication through atmospheric turbulence 

    Belmonte Molina, Aniceto; Kahn, J. M. (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2018)
    Conference report
    Open Access
    We have determined the optimal beams for free-space optical transmission through atmospheric turbulence. These are stochastic eigenmodes derived analytically from a canonical turbulence model, assuming known turbulence ...
  • Array receivers in downlink coherent lasercom 

    Belmonte Molina, Aniceto; Khan, Joseph M. (2015)
    Conference lecture
    Restricted access - publisher's policy
    Free-space laser downlinks have the potential to provide high data rates in space-to-earth communications and become a key enabler of future optical information systems in space. However, when a downlink passes through the ...
  • Atmospheric compensation experiments on advanced free-space optical coherent communication systems 

    Anzuola Valencia, Esdras; Belmonte Molina, Aniceto (Edicions UPC, 2012)
    Conference lecture
    Restricted access - publisher's policy
  • Atmospheric-turbulence-induced power-fade statistics for a multiaperture optical receiver 

    Belmonte Molina, Aniceto; Comerón Tejero, Adolfo; Rubio, Juan Antonio; Fernández (OPTICAL SOC AMER, 1997-01-31)
    Article
    Open Access
    To estimate the probability distributions of power fades, we consider two basic types of disturbance in electromagnetic wave propagation through atmospheric turbulence: wave-front intensity fluctuations and wave-front ...
  • Atmospheric-turbulence-induced power-fade statistics for a multiaperture optical reciever 

    Belmonte Molina, Aniceto; Comerón Tejero, Adolfo; Rubio, J.A.; Bará Temes, Francisco Javier; Fernández, E. (1997-01)
    Article
    Restricted access - publisher's policy
    To estimate the probability distributions of power fades, we consider two basic types of disturbance in electromagnetic wave propagation through atmospheric turbulence: wave-front intensity fluctuations and wave-front ...
  • Averaging of collected-power fluctuations by a multiaperture receiver system 

    Belmonte Molina, Aniceto; Comerón Tejero, Adolfo; Bará Temes, Francisco Javier; Rubio, Juan Antonio (SPIE-INT SOCIETY OPTICAL ENGINEERING, 1996-10-31)
    Article
    Open Access
    When a large aperture is used to collect light propagated through the atmosphere, it performs an average operation on the irradiance fluctuations, resulting in collected-power fluctuations that are not as large as those ...
  • Averaging of collected-power fluctuations by a multiaperture receiver system 

    Belmonte Molina, Aniceto; Comerón Tejero, Adolfo; Bará Temes, Francisco Javier; Antonio, Juan Rubio (1996-10)
    Article
    Restricted access - publisher's policy
    When a large aperture is used to collect light propagated through the atmosphere, it performs an average operation on the irradiance fluctuations, resulting in collected-power fluctuations that are not as large as those ...
  • Blind adaptation of channel-matched receivers in free-space coherent laser communication 

    Belmonte Molina, Aniceto; Kahn, Joseph M. (The Optical Society (OSA), 2012)
    Conference report
    Restricted access - publisher's policy
    Channel-matched adaptive coherent receivers are implemented using aperture arrays. As an alternative to training-based channel estimation, we analyze the performance of sequential techniques for blind adaptation of ...
  • Capacity of coherent free-space optical links ¿using diversity-combining techniques: errata 

    Belmonte Molina, Aniceto; Kahn, Joseph M. (2010-08-16)
    Article
    Open Access
  • Capacity of coherent laser downlinks 

    Belmonte Molina, Aniceto (2014-06-01)
    Article
    Restricted access - publisher's policy
    Accurate knowledge of information data capacity between a spacecraft and optical ground stations is of utmost importance for assessing the feasibility of laser downlinks in future high bandwidth communication systems from ...
  • Complex light-assisted optical metrology techniques 

    Rosales Guzmán, Carmelo; Belmonte Molina, Aniceto; Pérez Torres, Juan (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2018)
    Conference report
    Restricted access - publisher's policy
    The on-demand tailoring of the properties of light, such as phase, polarization or spatial shape, has completely changed the landscape of photonic-based applications. In this way, complex light fields have become an ...
  • Digital coherent receiver for orbital angular momentum demultiplexing 

    Belmonte Molina, Aniceto; Pérez Torres, Juan (2013-01-15)
    Article
    Open Access
    We put forward a type of receiver for coherent detection of the photon orbital angular momentum (OAM). A coherent array receiver, consisting of multiple subapertures, with each subaperture coupled to a single-mode fiber, ...
  • Digital equalization of time-delay array receivers on coherent laser communications 

    Belmonte Molina, Aniceto (2017-01-15)
    Article
    Open Access
    Field conjugation arrays use adaptive combining techniques on multi-aperture receivers to improve the performance of coherent laser communication links by mitigating the consequences of atmospheric turbulence on the ...
  • Direction-sensitive transverse velocity measurement by phase-modulated structured light beams 

    Rosales Guzmán, Carmelo; Hermosa, Nathaniel; Belmonte Molina, Aniceto; Pérez Torres, Juan (2014-09-15)
    Article
    Restricted access - publisher's policy
    The use of structured light beams to detect the velocity of targets moving perpendicularly to the beam's propagation axis opens new avenues for remote sensing of moving objects. However, determining the direction of motion ...