0000000000385673

AUTHOR

Roberto Llorente

0000-0003-4799-2564

showing 4 related works from this author

On the performance of a linearized dual parallel Mach Zehnder electro-optic modulator

2014

The performance of a dual parallel differential Mach-Zehnder modulator broadband linearization architecture is analysed. This study provides experimental and analytical results showing an enhancement up to 20 dB in the 3rd-order intermodulation distortion factor at 5 GHz using RF and optical asymmetrical feeding factors.

ModulatorFOS: Physical sciencesPhysics::OpticsMach–Zehnder interferometerOpticsLinearizationBroadbandTEORIA DE LA SEÑAL Y COMUNICACIONESLinearisation techniquesElectrical and Electronic EngineeringPhysical and Theoretical ChemistryComunicació i tecnologiaMicrowave photonicsOptical fibre communicationsPhysicsbusiness.industryElectro-optic modulatorÒpticaAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsDual (category theory)Microwave photonicsbusinessOptics (physics.optics)IntermodulationPhysics - OpticsFibre radio
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Ultra-Wideband Radio Signals Distribution in FTTH Networks

2008

[EN] The use of an ultra-wideband (UWB) radio technique is proposed as a viable solution for the distribution of high-definition audio/video content in fiber-to-the-home (FTTH) networks. The approach suitability is demonstrated by the transmission of standards-based UWB signals at 1.25 Gb/s along different FTTH fiber links with 25 km up to 60 kin of standard single-mode fiber length in a laboratory experiment. Experimental results suggest that orthogonal frequency-division-multiplexed UWB signals exhibit better transmission performance in FFTH networks than impulse radio UWB signals.

EngineeringOptical communicationsbusiness.industryAccess networks Ultra-Wide Band (UWB).Optical communicationUltra-widebandFiber-To-The-Home (FTTH)Transmission performanceAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsTelecomunicacióRadio over fiberTransmission (telecommunications)TEORIA DE LA SEÑAL Y COMUNICACIONESElectronic engineeringElectrical and Electronic EngineeringLaboratory experimentbusinessComunicació i tecnologiaImpulse radio
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Combined Analysis of OFDM-UWB Transmission in Hybrid Wireless-Optical Access Networks

2009

[EN] The hybrid wireless-optical transmission of ultra-wideband signals employing orthogonal frequency-division multiplexing modulation (OFDM) ultra-wideband (UWB) as defined in the ECMA-368 standard is experimentally analyzed in this letter. The OFDM-UWB signals provide 400 Mb/s per user at optical distances from 5 to 50 km on standard single-mode fiber (SSMF). The analysis includes the wireless radiation from 0 to 3 m after optical transmission. The results indicate a maximum error-vector-magnitude degradation of 2.5 dB measured at 1.5-m radio after 50-km SSMF optical transmission for the first two UWB channels. This degradation translates to 1-m maximum wireless-reach penalty.

EngineeringOrthogonal frequency-division multiplexingOptical communication02 engineering and technology01 natural sciencesMultiplexingTelecomunicació010309 optics020210 optoelectronics & photonicsTEORIA DE LA SEÑAL Y COMUNICACIONES0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectronic engineeringWirelessElectrical and Electronic EngineeringComunicació i tecnologiaFiber-to-the-home (FTTH) networksOptical access networksAccess networkOptical communicationsbusiness.industrySingle-mode optical fiberAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsTransmission (telecommunications)Ultra-wideband (UWB)ModulationbusinessIEEE Photonics Technology Letters
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Joint Distribution of Polarization-Multiplexed UWB and WiMAX Radio in PON

2009

[EN] In this paper, the feasibility of the joint distribution of ultra-wideband (UWB) and WIMAX wireless using polarization multiplexing as a coexistence technique is proposed and experimentally demonstrated within the framework of passive optical networks (PON). Four single- and orthogonal-polarization multiplexing schemes are studied targeting to reduce the mutual interference when UWB and WiMAX are distributed jointly through standard single-mode fiber (SSMF) without transmission impairments compensation techniques and amplification. Experimental results indicate successful transmission up to 25 km, in SSMF exceeding the range in typical PON deployments. The radio link penalty introduced…

Integrated optical-wireless accessEngineeringH600WiMAX radioUltra-widebandRadio-over-fiber02 engineering and technologyPolarization-division multiplexingPassive optical networkMultiplexingTelecomunicacióOptical fiber communication020210 optoelectronics & photonicsRadio over fiberTEORIA DE LA SEÑAL Y COMUNICACIONES0202 electrical engineering electronic engineering information engineeringElectronic engineeringComunicació i tecnologiaUltra-wideband radiobusiness.industryPolarization division multiplexing020206 networking & telecommunicationsWiMAXAtomic and Molecular Physics and OpticsbusinessData transmissionFree-space optical communication
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